{"id":33218,"date":"2019-08-08T12:37:59","date_gmt":"2019-08-08T07:07:59","guid":{"rendered":"https:\/\/cracku.in\/blog\/?p=33218"},"modified":"2019-08-08T15:42:51","modified_gmt":"2019-08-08T10:12:51","slug":"top-100-expected-rrb-ntpc-chemistry-questions-part-2-pdf","status":"publish","type":"post","link":"https:\/\/cracku.in\/blog\/top-100-expected-rrb-ntpc-chemistry-questions-part-2-pdf\/","title":{"rendered":"Top-100 Expected RRB NTPC Chemistry Questions Part-2 PDF"},"content":{"rendered":"<h1><span style=\"font-size: 18pt;\"><strong>Top-100 Expected RRB NTPC Chemistry Questions Part-2 PDF<\/strong><\/span><\/h1>\n<p>Download Top-100 Expected Chemistry questions and answers for RRB NTPC Stage-1 exam. Go through the video of Repeatedly asked and most important RRB NTPC Chemistry questions. These questions are based on previous year questions in Railways and other Govt exam<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/downloads\/5811\" target=\"_blank\" class=\"btn btn-danger  download\">Download Top &#8211; 100 RRB NTPC Chemistry Question Part-II<\/a><\/p>\n<p>visit the following link to download RRB NTPC Chemistry Questions Part-I :<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/downloads\/5590\" target=\"_blank\" class=\"btn btn-danger  download\">Download RRB NTPC Chemistry Questions Part-1<\/a><\/p>\n<!-- Error, Advert is not available at this time due to schedule\/geolocation restrictions! -->\n<p><strong>Practice:<\/strong><\/p>\n<p>Take a <a href=\"https:\/\/cracku.in\/rrb-ntpc-mock-test\" target=\"_blank\" rel=\"noopener\">free mock test for RRB NTPC<\/a><\/p>\n<p>Practice 4500+\u00a0<a href=\"https:\/\/cracku.in\/rrb-study-material\" target=\"_blank\" rel=\"noopener\">Solved Questions for RRB NTPC<\/a><\/p>\n<p><strong>Download:<\/strong><\/p>\n<p>Download <a href=\"https:\/\/cracku.in\/railways-ntpc-previous-papers\" target=\"_blank\" rel=\"noopener\">RRB NTPC Previous Papers PDF<\/a><\/p>\n<p>Download <a href=\"https:\/\/cracku.in\/blog\/rrb-ntpc-study-material-important-questions-pdf\/\" target=\"_blank\" rel=\"noopener\">RRB NTPC Study Material PDF<\/a><br \/>\n<iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/Yd40g4lxaLI\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<h2>Read this Post in <a style=\"color: blue;\" href=\"https:\/\/cracku.in\/blog\/te\/top-100-expected-rrb-ntpc-chemistry-questions-in-telugu-part-2-pdf\/\">Telugu<\/a><\/h2>\n<p><b>Question 1:\u00a0<\/b>Which India born physicist invented the &#8216;Optical Fibre&#8217; &#8216;?<\/p>\n<p>a)\u00a0C.V. Raman<\/p>\n<p>b)\u00a0Satyendra Nath Bose<\/p>\n<p>c)\u00a0Homi J.Bhabha<\/p>\n<p>d)\u00a0Narinder Singh Kapany<\/p>\n<p><b>Question 2:\u00a0<\/b>The pollutant respossible for ozone holes is :<\/p>\n<p>a)\u00a0$CO_2$<\/p>\n<p>b)\u00a0CO<\/p>\n<p>c)\u00a0$SO_2$<\/p>\n<p>d)\u00a0CFC<\/p>\n<p><b>Question 3:\u00a0<\/b>Modern periodic table is based on &#8230;&#8230;&#8230;.<\/p>\n<p>a)\u00a0atomic number<\/p>\n<p>b)\u00a0number of positrons<\/p>\n<p>c)\u00a0atomic mass number<\/p>\n<p>d)\u00a0number of neutrons<\/p>\n<p><b>Question 4:\u00a0<\/b>In Mendeleev&#8221;s periodic table, the vertical columns are called:<\/p>\n<p>a)\u00a0Units<\/p>\n<p>b)\u00a0Classes<\/p>\n<p>c)\u00a0Groups<\/p>\n<p>d)\u00a0Periods<\/p>\n<p><b>Question 5:\u00a0<\/b>Who predicted the existence of some yet to be discovered elements on the basis of gaps in his periodic table?<\/p>\n<p>a)\u00a0Mendeleev<\/p>\n<p>b)\u00a0Dobereiner<\/p>\n<p>c)\u00a0Newlands<\/p>\n<p>d)\u00a0Mosely<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-ntpc-mock-test\" target=\"_blank\" class=\"btn btn-danger \">RRB NTPC Free Mock Test<\/a><\/p>\n<!-- Error, Advert is not available at this time due to schedule\/geolocation restrictions! -->\n<p><b>Question 6:\u00a0<\/b>What is the chemical formula of Alkynes?<\/p>\n<p>a)\u00a0$C_nH_{2n -1}$<\/p>\n<p>b)\u00a0$C_nH_{2n}$<\/p>\n<p>c)\u00a0$C_nH_{2n -2}$<\/p>\n<p>d)\u00a0$C_nH_{2n +1}$<\/p>\n<p><b>Question 7:\u00a0<\/b>The atomic number of the atom that becomes stable by gaining 3 electrons in $5^{th}$ shell is:<\/p>\n<p>a)\u00a057<\/p>\n<p>b)\u00a051<\/p>\n<p>c)\u00a055<\/p>\n<p>d)\u00a059<\/p>\n<p><b>Question 8:\u00a0<\/b>An element of atomic number 16 will belong to the &#8230;&#8230; period of the periodic table.<\/p>\n<p>a)\u00a0$5^{th}$<\/p>\n<p>b)\u00a0$6^{th}$<\/p>\n<p>c)\u00a0$3^{rd}$<\/p>\n<p>d)\u00a0$4^{th}$<\/p>\n<p><b>Question 9:\u00a0<\/b>Vessels are the major water conducting cells in:<\/p>\n<p>a)\u00a0Fungi<\/p>\n<p>b)\u00a0Angiosperms<\/p>\n<p>c)\u00a0Bryophyta<\/p>\n<p>d)\u00a0Thallophyta<\/p>\n<p><b>Question 10:\u00a0<\/b>Rupee 5 and 10 coins are now made of<\/p>\n<p>a)\u00a0Ferritic stainless steel<\/p>\n<p>b)\u00a0Silver and steel<\/p>\n<p>c)\u00a0Cupro nickel alloy<\/p>\n<p>d)\u00a0Copper and brass<\/p>\n<p><b>Question 11:\u00a0<\/b>Elements in the Modern Periodic Table are arranged in &#8230;&#8230;&#8230;. periods.<\/p>\n<p>a)\u00a06<\/p>\n<p>b)\u00a08<\/p>\n<p>c)\u00a05<\/p>\n<p>d)\u00a07<\/p>\n<p><b>Question 12:\u00a0<\/b>In Mendeleev\u2019s periodic table, the properties of the elements are considered a periodic<br \/>\nfunction of their:<\/p>\n<p>a)\u00a0Atomic mass<\/p>\n<p>b)\u00a0Ionization enthalpy<\/p>\n<p>c)\u00a0Atomic size<\/p>\n<p>d)\u00a0Atomic number<\/p>\n<p><b>Question 13:\u00a0<\/b>If the atomic number of Krypton is 36, then its electronic configuration is:<\/p>\n<p>a)\u00a02,8,18,8<\/p>\n<p>b)\u00a02,8,20,6<\/p>\n<p>c)\u00a02,18,16<\/p>\n<p>d)\u00a02.18,8,8<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/railways-ntpc-previous-papers\" target=\"_blank\" class=\"btn btn-primary \">RRB NTPC Previous Papers [Download PDF]<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-study-material\" target=\"_blank\" class=\"btn btn-danger \">RRB NTPC Study Material &#8211; 4500+ Questions<\/a><\/p>\n<p><b>Question 14:\u00a0<\/b>The metal that can be cut with a knife is:<\/p>\n<p>a)\u00a0Sodium<\/p>\n<p>b)\u00a0Iron<\/p>\n<p>c)\u00a0Aluminium<\/p>\n<p>d)\u00a0Copper<\/p>\n<p><b>Question 15:\u00a0<\/b>The pH of a solution is 3. When its pH changes to 6, then $H^+$ ion concentration:<\/p>\n<p>a)\u00a0increases 2 times<\/p>\n<p>b)\u00a0increases three times<\/p>\n<p>c)\u00a0decreases 1000 times<\/p>\n<p>d)\u00a0decreases 100 times<\/p>\n<p><b>Question 16:\u00a0<\/b>In the reaction $H_2O_2 + Cl_2 \\rightarrow 2HCl + O_2, H_2O_2$ acts as:<\/p>\n<p>a)\u00a0an acid<\/p>\n<p>b)\u00a0an oxidising agent<\/p>\n<p>c)\u00a0a reducing agent<\/p>\n<p>d)\u00a0a base<\/p>\n<p><b>Question 17:\u00a0<\/b>The number of neutrons present in a nitrogen atom is &#8230;&#8230;&#8230;&#8230;<\/p>\n<p>a)\u00a014<\/p>\n<p>b)\u00a07<\/p>\n<p>c)\u00a011<\/p>\n<p>d)\u00a05<\/p>\n<p><b>Question 18:\u00a0<\/b>Aqueous solution of copper sulphate:<\/p>\n<p>a)\u00a0does not affects litmus<\/p>\n<p>b)\u00a0affects both red and blue litmus.<\/p>\n<p>c)\u00a0turns blue litmus red<\/p>\n<p>d)\u00a0turns red litmus blue<\/p>\n<p><b>Question 19:\u00a0<\/b>Which of the following is the third member of the Dobereiner triad, that also features\u00a0Lithium and Sodium?<\/p>\n<p>a)\u00a0Potassium<\/p>\n<p>b)\u00a0Boron<\/p>\n<p>c)\u00a0Barium<\/p>\n<p>d)\u00a0Hydrogen<\/p>\n<p><b>Question 20:\u00a0<\/b>In the Modern Periodic Table, elements are arranged in:<\/p>\n<p>a)\u00a0increasing atomic mass number<\/p>\n<p>b)\u00a0increasing atomic number<\/p>\n<p>c)\u00a0decreasing atomic mass number<\/p>\n<p>d)\u00a0decreasing atomic number<\/p>\n<p><b>Question 21:\u00a0<\/b>Two or more elements combine to form a:<\/p>\n<p>a)\u00a0atom<\/p>\n<p>b)\u00a0valency<\/p>\n<p>c)\u00a0compound<\/p>\n<p>d)\u00a0radical<\/p>\n<p><b>Question 22:\u00a0<\/b>How many atoms will one mole of Carbon (C-12) contain?<\/p>\n<p>a)\u00a0$6.02 \\times 10^{23}$<\/p>\n<p>b)\u00a0$8.06 \\times 10^{20}$<\/p>\n<p>c)\u00a0$6.02 \\times 10^{26}$<\/p>\n<p>d)\u00a0$60.20 \\times 10^{26}$<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-online-test\" target=\"_blank\" class=\"btn btn-danger \"> Daily Free RRB Online Tests for RRB Exams<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-ntpc-mock-test\" target=\"_blank\" class=\"btn btn-primary \">RRB NTPC Free Mock Test<\/a><\/p>\n<p><b>Question 23:\u00a0<\/b>Which of the following allotropes of Carbon is used as a reducing agent in metallurgy?<\/p>\n<p>a)\u00a0Carbon Black<\/p>\n<p>b)\u00a0Graphite<\/p>\n<p>c)\u00a0Charcoal<\/p>\n<p>d)\u00a0Coke<\/p>\n<p><b>Question 24:\u00a0<\/b>Name the Russian chemist who stated that the properties of elements are a periodic\u00a0function of their atomic masses?<\/p>\n<p>a)\u00a0Markovnikov<\/p>\n<p>b)\u00a0Zelinsky<\/p>\n<p>c)\u00a0Mendeleev<\/p>\n<p>d)\u00a0Zaitsev<\/p>\n<p><b>Question 25:\u00a0<\/b>Which of the following causes damage to bridges, iron railings and all objects made of metals?<\/p>\n<p>a)\u00a0Reduction<\/p>\n<p>b)\u00a0Rancidity<\/p>\n<p>c)\u00a0Acidity<\/p>\n<p>d)\u00a0Corrosion<\/p>\n<p><b>Question 26:\u00a0<\/b>Name the reddish brown gas evolved when Lead Nitrate is heated strongly.<\/p>\n<p>a)\u00a0Nitric Oxide<\/p>\n<p>b)\u00a0Nitrogen di Oxide<\/p>\n<p>c)\u00a0Di Nitrogen Oxide<\/p>\n<p>d)\u00a0Nitrogen pentoxide<\/p>\n<p><b>Question 27:\u00a0<\/b>In the modern periodic table, which of the two periods contain 8 elements each?<\/p>\n<p>a)\u00a04 and 5<\/p>\n<p>b)\u00a03 and 4<\/p>\n<p>c)\u00a01 and 2<\/p>\n<p>d)\u00a02 and 3<\/p>\n<p><b>Question 28:\u00a0<\/b>The percentage of carbon in $CO_2$ is:<\/p>\n<p>a)\u00a012<\/p>\n<p>b)\u00a044<\/p>\n<p>c)\u00a014<\/p>\n<p>d)\u00a027.3<\/p>\n<p><b>Question 29:\u00a0<\/b>Non-metal oxides are usually:<\/p>\n<p>a)\u00a0acidic<\/p>\n<p>b)\u00a0amphoteric<\/p>\n<p>c)\u00a0neutral<\/p>\n<p>d)\u00a0basic<\/p>\n<p><b>Question 30:\u00a0<\/b>Which of the following elements replaced eka-Aluminium in Mendeleev\u2019s Periodic Table?<\/p>\n<p>a)\u00a0Scandium<\/p>\n<p>b)\u00a0Gallium<\/p>\n<p>c)\u00a0Titanium<\/p>\n<p>d)\u00a0Germanium<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/railways-ntpc-previous-papers\" target=\"_blank\" class=\"btn btn-primary \">RRB NTPC Previous Papers [Download PDF]<\/a><\/p>\n<!-- Error, Advert is not available at this time due to schedule\/geolocation restrictions! -->\n<p><b>Question 31:\u00a0<\/b>If a solution turns blue litmus red, its pH is likely to be:<\/p>\n<p>a)\u00a07<\/p>\n<p>b)\u00a08<\/p>\n<p>c)\u00a09<\/p>\n<p>d)\u00a06<\/p>\n<p><b>Question 32:\u00a0<\/b>The chemical formula of Propane is:<\/p>\n<p>a)\u00a0$C_3H_8$<\/p>\n<p>b)\u00a0$C_4H_{10}$<\/p>\n<p>c)\u00a0$C_2H_6$<\/p>\n<p>d)\u00a0$CH_4$<\/p>\n<p><b>Question 33:\u00a0<\/b>Name the noble gas which is placed in the third period and eighth group of the Modern<br \/>\nPeriodic Table.<\/p>\n<p>a)\u00a0Helium<\/p>\n<p>b)\u00a0Argon<\/p>\n<p>c)\u00a0Neon<\/p>\n<p>d)\u00a0Krypton<\/p>\n<p><b>Question 34:\u00a0<\/b>Which of the following gasesis liberated when Sodium Hydrogen Carbonate is heated?<\/p>\n<p>a)\u00a0Carbon Monoxide<\/p>\n<p>b)\u00a0Carbon Dioxide<\/p>\n<p>c)\u00a0Oxygen<\/p>\n<p>d)\u00a0Hydrogen<\/p>\n<p><b>Question 35:\u00a0<\/b>Metals are placed on which side of the Modern Periodic Table?<\/p>\n<p>a)\u00a0Top row<\/p>\n<p>b)\u00a0Left side<\/p>\n<p>c)\u00a0Right side<\/p>\n<p>d)\u00a0Bottom row<\/p>\n<p><b>Question 36:\u00a0<\/b>Which of the following glows with special colour depending on the nature of gas in the\u00a0fluorescent tube?<\/p>\n<p>a)\u00a0Plasma<\/p>\n<p>b)\u00a0Hydrogen<\/p>\n<p>c)\u00a0Helium<\/p>\n<p>d)\u00a0Bose-Einstein condensate<\/p>\n<p><b>Question 37:\u00a0<\/b>If we take a small amount of washing soda and add approximately 1 mL of dilute hydrochloric acid to it, what will we observe?<\/p>\n<p>a)\u00a0Only neutralisation reaction occurs, no gasis released.<\/p>\n<p>b)\u00a0White-coloured precipitate is formed.<\/p>\n<p>c)\u00a0CO2 gas comes out with brisk effervescence.<\/p>\n<p>d)\u00a0H2 gas comesout with pop sound.<\/p>\n<p><b>Question 38:\u00a0<\/b>Iron which resembles Cobalt and Nickel in properties has been placed far away from these elements. This was one ofthe limitations of:<\/p>\n<p>a)\u00a0Modern periodic table<\/p>\n<p>b)\u00a0&#8216;Newlands\u2019 law of octaves<\/p>\n<p>c)\u00a0Dobereiner\u2019s triads<\/p>\n<p>d)\u00a0Mendeleev\u2019s periodic table<\/p>\n<p><b>Question 39:\u00a0<\/b>The credit for classifying the elements on the basis of their atomic masses goes to:<\/p>\n<p>a)\u00a0John Dalton<\/p>\n<p>b)\u00a0John Alexander Reina Newlands<\/p>\n<p>c)\u00a0Dmitri Mendeleev<\/p>\n<p>d)\u00a0Johann Wolfgang Dobereiner<\/p>\n<p><b>Question 40:\u00a0<\/b>Lime water turns milky when carbon dioxide is passed through it. It is due to the<br \/>\nformation of:<\/p>\n<p>a)\u00a0Calcium Carbonate<\/p>\n<p>b)\u00a0Barium Carbonate<\/p>\n<p>c)\u00a0Calcium Hydrogen Carbonate<\/p>\n<p>d)\u00a0Calcium Oxide<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/railways-ntpc-previous-papers\" target=\"_blank\" class=\"btn btn-primary \">RRB NTPC Previous Papers [Download PDF]<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/blog\/rrb-ntpc-study-material-important-questions-pdf\/\" target=\"_blank\" class=\"btn btn-danger \">RRB NTPC Study Material (Download PDF)<\/a><\/p>\n<p><b>Question 41:\u00a0<\/b>Non-metallic character increases from &#8230;&#8230;&#8230;&#8230;<\/p>\n<p>a)\u00a0Magnesium to Barium<\/p>\n<p>b)\u00a0Potassium to Caesium<\/p>\n<p>c)\u00a0Oxygen to Selenium<\/p>\n<p>d)\u00a0Sodium to Chlorine<\/p>\n<p><b>Question 42:\u00a0<\/b>Aluminium oxide is &#8230;&#8230;&#8230;&#8230; in nature.<\/p>\n<p>a)\u00a0acidic<\/p>\n<p>b)\u00a0neutral<\/p>\n<p>c)\u00a0basic<\/p>\n<p>d)\u00a0amphoteric<\/p>\n<p><b>Question 43:\u00a0<\/b>Which one of the following is commonly used as an indicator to measure the exact pH?<\/p>\n<p>a)\u00a0Eosin<\/p>\n<p>b)\u00a0Phenolphthalein<\/p>\n<p>c)\u00a0Universal indicator<\/p>\n<p>d)\u00a0Litmus<\/p>\n<p><b>Question 44:\u00a0<\/b>Which one of the following oxides of Nitrogen is also known as Laughing Gas?<\/p>\n<p>a)\u00a0$NO_2$<\/p>\n<p>b)\u00a0$N_2O_5$<\/p>\n<p>c)\u00a0$NO$<\/p>\n<p>d)\u00a0$N_2O$<\/p>\n<p><b>Question 45:\u00a0<\/b>An element with an atomic number of &#8230;&#8230;&#8230; will form a basic oxide.<\/p>\n<p>a)\u00a020<\/p>\n<p>b)\u00a07<\/p>\n<p>c)\u00a06<\/p>\n<p>d)\u00a017<\/p>\n<p><b>Question 46:\u00a0<\/b>Common salt (NaCl) is made up of:<\/p>\n<p>a)\u00a0a weak acid and a weak base<\/p>\n<p>b)\u00a0a strong acid and a weak base<\/p>\n<p>c)\u00a0a weak acid and a strong base<\/p>\n<p>d)\u00a0a strong acid and a strong base<\/p>\n<p><b>Question 47:\u00a0<\/b>An element has an atomic weight ofW and an atomic number of N. The number of protons in the nucleus of its atom is:<\/p>\n<p>a)\u00a0N<\/p>\n<p>b)\u00a0W<\/p>\n<p>c)\u00a0W + N<\/p>\n<p>d)\u00a0W &#8211; N<\/p>\n<p><b>Question 48:\u00a0<\/b>&#8230;&#8230;&#8230;. is the number of shells for elements of the $3^{rd}$ period.<\/p>\n<p>a)\u00a01<\/p>\n<p>b)\u00a00<\/p>\n<p>c)\u00a02<\/p>\n<p>d)\u00a03<\/p>\n<p><b>Question 49:\u00a0<\/b>Which of the following gases makes bread or cake rise making them soft and spongy?<\/p>\n<p>a)\u00a0$CO$<\/p>\n<p>b)\u00a0$CO_2$<\/p>\n<p>c)\u00a0$H_2$<\/p>\n<p>d)\u00a0$O_2$<\/p>\n<p><b>Question 50:\u00a0<\/b>What is the number of atoms constituting a molecule known as?<\/p>\n<p>a)\u00a0Atomicity<\/p>\n<p>b)\u00a0Atomic mass<\/p>\n<p>c)\u00a0Atomic number<\/p>\n<p>d)\u00a0Isotopes<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/blog\/general-science-questions-answers-competitive-exams-pdf-mcq-quiz\/\" target=\"_blank\" class=\"btn btn-info \">Download General Science Notes PDF<\/a><\/p>\n<!-- Error, Advert is not available at this time due to schedule\/geolocation restrictions! -->\n<p><b>Question 51:\u00a0<\/b>Which of the following can undergo sublimation?<\/p>\n<p>a)\u00a0Ammonium chlorate<\/p>\n<p>b)\u00a0Ammonium sulphate<\/p>\n<p>c)\u00a0Ammonium chloride<\/p>\n<p>d)\u00a0Ammonium sulphide<\/p>\n<p><b>Question 52:\u00a0<\/b>Which of the following is used in the preparation of tincture iodine, cough syrup and<br \/>\nmany tonics?<\/p>\n<p>a)\u00a0Methanol<\/p>\n<p>b)\u00a0Ethanoic acid<\/p>\n<p>c)\u00a0Acetic acid<\/p>\n<p>d)\u00a0Ethanol<\/p>\n<p><b>Question 53:\u00a0<\/b>The mass of one molecule of oxygen is &#8230;&#8230;&#8230;<\/p>\n<p>a)\u00a0$2.3 \\times 10^{-23}$ g<\/p>\n<p>b)\u00a0$3.3 \\times 10^{-23}$ g<\/p>\n<p>c)\u00a0$4.3 \\times 10^{-23}$ g<\/p>\n<p>d)\u00a0$5.3 \\times 10^{-23}$ g<\/p>\n<p><b>Question 54:\u00a0<\/b>Which of the following metals displaces Iron from Iron Chloride?<\/p>\n<p>a)\u00a0Lead<\/p>\n<p>b)\u00a0Zinc<\/p>\n<p>c)\u00a0Tin<\/p>\n<p>d)\u00a0Silver<\/p>\n<p><b>Question 55:\u00a0<\/b>&#8230;&#8230;&#8230;. is the process in which acids and bases react to form salts and water.<\/p>\n<p>a)\u00a0Distillation<\/p>\n<p>b)\u00a0Electrolysis<\/p>\n<p>c)\u00a0Neutralisation<\/p>\n<p>d)\u00a0Hydrolysis<\/p>\n<p><b>Question 56:\u00a0<\/b>How many molecules are present in one mole of water?<\/p>\n<p>a)\u00a0$6.02\\times10^{23}molecules$<\/p>\n<p>b)\u00a0$6.02\\times10^{26}molecules$<\/p>\n<p>c)\u00a0$8.02\\times10^{22}molecules$<\/p>\n<p>d)\u00a0$7.02\\times10^{23}molecules$<\/p>\n<p><b>Question 57:\u00a0<\/b>Which group in the modern periodic table contains elements that are inert gases?<\/p>\n<p>a)\u00a0Group 16<\/p>\n<p>b)\u00a0Group 18<\/p>\n<p>c)\u00a0Group 17<\/p>\n<p>d)\u00a0Group 15<\/p>\n<p><b>Question 58:\u00a0<\/b>Which of the following is used as a catalyst in the hydrogenation of vegetable oil?<\/p>\n<p>a)\u00a0He<\/p>\n<p>b)\u00a0$H_{2}$<\/p>\n<p>c)\u00a0Ni<\/p>\n<p>d)\u00a0Pb<\/p>\n<p><b>Question 59:\u00a0<\/b>Burning Magnesium ribbon produces white ash, which dissolves in water to form &#8230;&#8230;..<\/p>\n<p>a)\u00a0Magnesium Halides<\/p>\n<p>b)\u00a0Magnesium Oxide<\/p>\n<p>c)\u00a0Magnesium Hydroxide<\/p>\n<p>d)\u00a0Magnesium Sulphate<\/p>\n<p><b>Question 60:\u00a0<\/b>If the valency of Aluminum is 3 and that of Oxygen is 2, then the chemical formula of<br \/>\nAluminum oxide is:<\/p>\n<p>a)\u00a0$(AlO)_{ 3 + 2 }$<\/p>\n<p>b)\u00a0$(AlO)_{ 2 }$<\/p>\n<p>c)\u00a0$Al_{3}O_{2}$<\/p>\n<p>d)\u00a0$Al_{2}O_{3}$<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-online-test\" target=\"_blank\" class=\"btn btn-danger \"> Daily Free RRB Online Tests for RRB Exams<\/a><\/p>\n<p><b>Question 61:\u00a0<\/b>Which of the following elements has the unique ability to form bonds with other atoms of<br \/>\nthe same element giving rise to large molecules?<\/p>\n<p>a)\u00a0Aluminium<\/p>\n<p>b)\u00a0Hydrogen<\/p>\n<p>c)\u00a0Carbon<\/p>\n<p>d)\u00a0Nitrogen<\/p>\n<p><b>Question 62:\u00a0<\/b>Newlands arranged &#8230;&#8230;&#8230;. the then known elements in his table of octaves.<\/p>\n<p>a)\u00a063<\/p>\n<p>b)\u00a056<\/p>\n<p>c)\u00a058<\/p>\n<p>d)\u00a017<\/p>\n<p><b>Question 63:\u00a0<\/b>An element with an atomic number of 17 is:<\/p>\n<p>a)\u00a0an alkali metal<\/p>\n<p>b)\u00a0a rare gas<\/p>\n<p>c)\u00a0a halogen gas<\/p>\n<p>d)\u00a0a transition metal<\/p>\n<p><b>Question 64:\u00a0<\/b>Which of the following methods will separate water from muddy water?<\/p>\n<p>a)\u00a0Separating funnel<\/p>\n<p>b)\u00a0Distillation<\/p>\n<p>c)\u00a0Crystallization<\/p>\n<p>d)\u00a0Filtration<\/p>\n<p><b>Question 65:\u00a0<\/b>Is Baking soda chemically different from Baking powder?<\/p>\n<p>a)\u00a0Yes, Baking soda is Sodium Carbonate while Baking powder is Sodium Bicarbonate.<\/p>\n<p>b)\u00a0Yes, Baking soda is Sodium bicarbonate while Baking powder is a mixture of Sadium bicarbonate and Tartaric acid.<\/p>\n<p>c)\u00a0Yes, Baking soda is Sodium bicarbonate while Baking powder is Calcium Carbonate.<\/p>\n<p>d)\u00a0No, they are identical chemically.<\/p>\n<p><b>Question 66:\u00a0<\/b>Which of the following is used to get relief when you have been stung by a honeybee?<\/p>\n<p>a)\u00a0Common salt<\/p>\n<p>b)\u00a0Baking soda<\/p>\n<p>c)\u00a0Acetic acid<\/p>\n<p>d)\u00a0Washing soda<\/p>\n<p><b>Question 67:\u00a0<\/b>Which of the following is added to iron to make iron hard and strong?<\/p>\n<p>a)\u00a0Zinc<\/p>\n<p>b)\u00a0Copper<\/p>\n<p>c)\u00a0Carbon<\/p>\n<p>d)\u00a0Sodium<\/p>\n<p><b>Question 68:\u00a0<\/b>NaCl is a salt which is made up of:<\/p>\n<p>a)\u00a0Strong acid and weak base<\/p>\n<p>b)\u00a0Weak acid and weak base<\/p>\n<p>c)\u00a0Strong acid and strong base<\/p>\n<p>d)\u00a0Weak acid and strong base<\/p>\n<p><b>Question 69:\u00a0<\/b>Which gas is released when bleaching powder is added to water?<\/p>\n<p>a)\u00a0Carbon Dioxide<\/p>\n<p>b)\u00a0Hydrogen<\/p>\n<p>c)\u00a0Chlorine<\/p>\n<p>d)\u00a0Carbon Monoxide<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-ntpc-mock-test\" target=\"_blank\" class=\"btn btn-primary \">RRB NTPC Free Mock Test<\/a><\/p>\n<p><b>Question 70:\u00a0<\/b>Brass is an alloy made of:<\/p>\n<p>a)\u00a0Copper and Tin<\/p>\n<p>b)\u00a0Copper and Zinc<\/p>\n<p>c)\u00a0Copper and Aluminum<\/p>\n<p>d)\u00a0Copper and Iron<\/p>\n<p><b>Question 71:\u00a0<\/b>What is the percentage of methane in biogas?<\/p>\n<p>a)\u00a090%<\/p>\n<p>b)\u00a080%<\/p>\n<p>c)\u00a060%<\/p>\n<p>d)\u00a075%<\/p>\n<p><b>Question 72:\u00a0<\/b>An element A forms an oxide with formula $A_{3}O_{4}$. What is the valency of element A ?<\/p>\n<p>a)\u00a03<\/p>\n<p>b)\u00a02<\/p>\n<p>c)\u00a01<\/p>\n<p>d)\u00a04<\/p>\n<p><b>Question 73:\u00a0<\/b>The maximum number of electrons that can be accommodated in a shell is indicated by the formula:<\/p>\n<p>a)\u00a0$\u00a02n^{-2} $<\/p>\n<p>b)\u00a0$\u00a02n^{3} $<\/p>\n<p>c)\u00a02n<\/p>\n<p>d)\u00a0$\u00a02n^{2} $<\/p>\n<p><b>Question 74:\u00a0<\/b>In the Modern Periodic Table elements present in the same period will have the same:<\/p>\n<p>a)\u00a0atomic weight<\/p>\n<p>b)\u00a0number of shells<\/p>\n<p>c)\u00a0atomic number<\/p>\n<p>d)\u00a0valence electrons<\/p>\n<p><b>Question 75:\u00a0<\/b>When iron is exposed to moist air, a reddish brown coating of hydrated Iron (III) Oxide $(Fe_2O_3)$ is deposited on its surface. This reddish brown coating is called:<\/p>\n<p>a)\u00a0alloy<\/p>\n<p>b)\u00a0dust<\/p>\n<p>c)\u00a0rust<\/p>\n<p>d)\u00a0iron<\/p>\n<p><b>Question 76:\u00a0<\/b>Which of the following statements is\/are true or false?<br \/>\n<strong>Statements:<\/strong><br \/>\nA) Natrium is the Latin name of Sodium<br \/>\nB) Argentum is the Latin name of Silver<\/p>\n<p>a)\u00a0Only statement A is true<\/p>\n<p>b)\u00a0Only statement B is true<\/p>\n<p>c)\u00a0Both statements A and B are true<\/p>\n<p>d)\u00a0Both statements A and B are false<\/p>\n<p><b>Question 77:\u00a0<\/b>Which of the following statements is\/are true or false?<br \/>\n<strong>Statements:<\/strong><br \/>\nA) $H_2S$ burns in air to give $H_2O$ and $SO_2$<br \/>\nB) The decomposition of Ferrous Sulphate into $Fe_2O_3, SO_2$ and $SO_3$ occurs in the presence of heat.<\/p>\n<p>a)\u00a0Statements A and B both are true<\/p>\n<p>b)\u00a0Statement A is true, while B is false<\/p>\n<p>c)\u00a0Statements A and B are false<\/p>\n<p>d)\u00a0Statement B is true, while A is false<\/p>\n<p><b>Question 78:\u00a0<\/b>A biochemical compound is any:<\/p>\n<p>a)\u00a0mineral-based compound found in living things<\/p>\n<p>b)\u00a0hydrogen-based compound found in living things<\/p>\n<p>c)\u00a0sulfur-based compound found in living things<\/p>\n<p>d)\u00a0carbon-based compound found in living things<\/p>\n<p><b>Question 79:\u00a0<\/b>The process of a solid converting directly into gaseous form is?<\/p>\n<p>a)\u00a0Evaporation<\/p>\n<p>b)\u00a0Sublimation<\/p>\n<p>c)\u00a0Condensation<\/p>\n<p>d)\u00a0Boiling<\/p>\n<p><b>Question 80:\u00a0<\/b>Ag is the chemical symbol of an expensive, soft, white and lustrous metal which commonly known as &#8230;&#8230;&#8230;&#8230;<\/p>\n<p>a)\u00a0aluminium<\/p>\n<p>b)\u00a0nickel<\/p>\n<p>c)\u00a0mercury<\/p>\n<p>d)\u00a0silver<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/railways-ntpc-previous-papers\" target=\"_blank\" class=\"btn btn-primary \">RRB NTPC Previous Papers [Download PDF]<\/a><\/p>\n<!-- Error, Advert is not available at this time due to schedule\/geolocation restrictions! -->\n<p><b>Question 81:\u00a0<\/b>The biggest consumer of natural gas in the world?<\/p>\n<p>a)\u00a0USA<\/p>\n<p>b)\u00a0Russia<\/p>\n<p>c)\u00a0Canada<\/p>\n<p>d)\u00a0China<\/p>\n<p><b>Question 82:\u00a0<\/b>What is the major component of Gobar Gas?<\/p>\n<p>a)\u00a0Propane<\/p>\n<p>b)\u00a0Butane<\/p>\n<p>c)\u00a0Methane<\/p>\n<p>d)\u00a0Ethylene<\/p>\n<p><b>Question 83:\u00a0<\/b>Which chemical is used to clean the roads after snow fall?<\/p>\n<p>a)\u00a0Liquid Sodium Nitrate<\/p>\n<p>b)\u00a0Liquid Sodium Hydroxide<\/p>\n<p>c)\u00a0Liquid Sodium Chloride<\/p>\n<p>d)\u00a0Liquid Sodium Cyanide<\/p>\n<p><b>Question 84:\u00a0<\/b>What is the constituent of tear gas?<\/p>\n<p>a)\u00a0Ethane<\/p>\n<p>b)\u00a0Methane<\/p>\n<p>c)\u00a0Chloropicrin<\/p>\n<p>d)\u00a0Ether<\/p>\n<p><b>Question 85:\u00a0<\/b>Which gas is used in LPG ?<\/p>\n<p><b>Question 86:\u00a0<\/b>Asphyxia can occur due to Inhalation of which gas?<\/p>\n<p>a)\u00a0Manganese Oxide<\/p>\n<p>b)\u00a0Magnesium Oxide<\/p>\n<p>c)\u00a0Carbon Dioxide<\/p>\n<p>d)\u00a0Carbon Monoxide<\/p>\n<p><b>Question 87:\u00a0<\/b>Which chemical is known as Philosopher\u2019s wool?<\/p>\n<p>a)\u00a0Zinc Oxide<\/p>\n<p>b)\u00a0Calcium Oxide<\/p>\n<p>c)\u00a0Sodium Oxide<\/p>\n<p>d)\u00a0Potassium Oxide<\/p>\n<p><b>Question 88:\u00a0<\/b>Which of the followmg gases turn lime water milky?<\/p>\n<p>a)\u00a0Oxygen<\/p>\n<p>b)\u00a0Nitrogen<\/p>\n<p>c)\u00a0Hydrogen<\/p>\n<p>d)\u00a0Carbon Dioxide<\/p>\n<p><b>Question 89:\u00a0<\/b>Liquefied petroleum gas consists of:<\/p>\n<p>a)\u00a0Hexane and benzene<\/p>\n<p>b)\u00a0Nitrogen and ethane<\/p>\n<p>c)\u00a0Propane and butane<\/p>\n<p>d)\u00a0Nonane and octane<\/p>\n<p><b>Question 90:\u00a0<\/b>The process of change from liquid to gas is called &#8230;&#8230;&#8230;..<\/p>\n<p>a)\u00a0Precipitation<\/p>\n<p>b)\u00a0Vaporisation<\/p>\n<p>c)\u00a0Decantation<\/p>\n<p>d)\u00a0Condensation<\/p>\n<p><b>Question 91:\u00a0<\/b>Which chemical is widely used to unclog drains and sinks?<\/p>\n<p>a)\u00a0Sodium Chloride<\/p>\n<p>b)\u00a0Nitrogen Hydroxide<\/p>\n<p>c)\u00a0Hydrogen Peroxide<\/p>\n<p>d)\u00a0Sodium Hydroxide<\/p>\n<p><b>Question 92:\u00a0<\/b>Who invented the bifocal glasses?<\/p>\n<p>a)\u00a0Thomas Alva Edison<\/p>\n<p>b)\u00a0Benjamin franIclin<\/p>\n<p>c)\u00a0Evangelista<\/p>\n<p>d)\u00a0Isaac Newton<\/p>\n<p><b>Question 93:\u00a0<\/b>What is an endothermic reaction?<\/p>\n<p>a)\u00a0Reaction in which heat is released.<\/p>\n<p>b)\u00a0Reaction in which heat is absorbed.<\/p>\n<p>c)\u00a0Reaction in which neither heat is released nor absorbed.<\/p>\n<p>d)\u00a0None of these<\/p>\n<p><b>Question 94:\u00a0<\/b>What is the chemical name of the deadly poison &#8216;cyanide&#8217;?<\/p>\n<p>a)\u00a0Prussic acid<\/p>\n<p>b)\u00a0Sulfuric acid<\/p>\n<p>c)\u00a0Hydrochloric acid<\/p>\n<p>d)\u00a0Nitric acid<\/p>\n<p><b>Question 95:\u00a0<\/b>Atomic bomb is based on which reaction?<\/p>\n<p><b>Question 96:\u00a0<\/b>What is the chemical name of Vitamin B12?<\/p>\n<p>a)\u00a0Calciferol<\/p>\n<p>b)\u00a0Pyridoxin<\/p>\n<p>c)\u00a0Cyanacobalamin<\/p>\n<p>d)\u00a0Tocopherol<\/p>\n<p><b>Question 97:\u00a0<\/b>Law of octaves says that if the chemical elements are arranged according to increasing atomic weight, those with similar physical and chemical properties occur after each interval of elements.<\/p>\n<p>a)\u00a010<\/p>\n<p>b)\u00a05<\/p>\n<p>c)\u00a07<\/p>\n<p>d)\u00a09<\/p>\n<p><b>Question 98:\u00a0<\/b>What is the dominant chemical present in vinegar?<\/p>\n<p>a)\u00a0Malic acid<\/p>\n<p>b)\u00a0Formic acid<\/p>\n<p>c)\u00a0Sulphuric acid<\/p>\n<p>d)\u00a0Ethanoic acid<\/p>\n<p><b>Question 99:\u00a0<\/b>Nitrous Oxide&#8217; is the chemical name of ______.<\/p>\n<p>a)\u00a0Tear Gas<\/p>\n<p>b)\u00a0Fire Extinguisher<\/p>\n<p>c)\u00a0Laughing Gas<\/p>\n<p>d)\u00a0Mosquito Repellent<\/p>\n<p><b>Question 100:\u00a0<\/b>What is the chemical name of slaked lime?<\/p>\n<p>a)\u00a0Calcium Hydroxide<\/p>\n<p>b)\u00a0Calcium Chloride<\/p>\n<p>c)\u00a0Sodium Chloride<\/p>\n<p>d)\u00a0Calcium Nitrate<\/p>\n<!-- Error, Advert is not available at this time due to schedule\/geolocation restrictions! -->\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-study-material\" target=\"_blank\" class=\"btn btn-info \">RRB NTPC Free Study Material &#8211; 4500 Questions<\/a><\/p>\n<p><span style=\"text-decoration: underline;\"><strong>Answers &amp; 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and Propane<\/b><\/p>\n<p><strong>86)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p><strong>87)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p><strong>88)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p><strong>89)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p><strong>90)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p><strong>91)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p><strong>92)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p><strong>93)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p><strong>94)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p><b>95)\u00a0Answer:\u00a0Nuclear fission<\/b><\/p>\n<p><strong>96)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p><strong>97)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p><strong>98)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p><strong>99)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p><strong>100)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.cracku.app&amp;hl=en_US\" target=\"_blank\" class=\"btn btn-danger \">DOWNLOAD APP FOR RRB FREE MOCKS<\/a><\/p>\n<p>We hope this very important RRB NTPC Chemistry\u00a0 Questions will be very helpful to you.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Top-100 Expected RRB NTPC Chemistry Questions Part-2 PDF Download Top-100 Expected Chemistry questions and answers for RRB NTPC Stage-1 exam. Go through the video of Repeatedly asked and most important RRB NTPC Chemistry questions. These questions are based on previous year questions in Railways and other Govt exam visit the following link to download RRB [&hellip;]<\/p>\n","protected":false},"author":30,"featured_media":33229,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[471,31,1603],"tags":[1593,2367],"class_list":{"0":"post-33218","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-current-affairs-2","8":"category-railways","9":"category-rrb-ntpc","10":"tag-rrb-ntpc","11":"tag-rrb-ntpc-chemistry-queatins"},"better_featured_image":{"id":33229,"alt_text":"RRB NTPC top-100 Chemistry Questions","caption":" RRB NTPC top-100 Chemistry Questions","description":" RRB NTPC top-100 Chemistry Questions","media_type":"image","media_details":{"width":1280,"height":720,"file":"2019\/08\/Copy-of-RRB-NTPC-100-Chemistry.png","sizes":{"thumbnail":{"file":"Copy-of-RRB-NTPC-100-Chemistry-150x150.png","width":150,"height":150,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-150x150.png"},"medium":{"file":"Copy-of-RRB-NTPC-100-Chemistry-300x169.png","width":300,"height":169,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-300x169.png"},"medium_large":{"file":"Copy-of-RRB-NTPC-100-Chemistry-768x432.png","width":768,"height":432,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-768x432.png"},"large":{"file":"Copy-of-RRB-NTPC-100-Chemistry-1024x576.png","width":1024,"height":576,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-1024x576.png"},"tiny-lazy":{"file":"Copy-of-RRB-NTPC-100-Chemistry-30x17.png","width":30,"height":17,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-30x17.png"},"td_80x60":{"file":"Copy-of-RRB-NTPC-100-Chemistry-80x60.png","width":80,"height":60,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-80x60.png"},"td_100x70":{"file":"Copy-of-RRB-NTPC-100-Chemistry-100x70.png","width":100,"height":70,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-100x70.png"},"td_218x150":{"file":"Copy-of-RRB-NTPC-100-Chemistry-218x150.png","width":218,"height":150,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-218x150.png"},"td_265x198":{"file":"Copy-of-RRB-NTPC-100-Chemistry-265x198.png","width":265,"height":198,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-265x198.png"},"td_324x160":{"file":"Copy-of-RRB-NTPC-100-Chemistry-324x160.png","width":324,"height":160,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-324x160.png"},"td_324x235":{"file":"Copy-of-RRB-NTPC-100-Chemistry-324x235.png","width":324,"height":235,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-324x235.png"},"td_324x400":{"file":"Copy-of-RRB-NTPC-100-Chemistry-324x400.png","width":324,"height":400,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-324x400.png"},"td_356x220":{"file":"Copy-of-RRB-NTPC-100-Chemistry-356x220.png","width":356,"height":220,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-356x220.png"},"td_356x364":{"file":"Copy-of-RRB-NTPC-100-Chemistry-356x364.png","width":356,"height":364,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-356x364.png"},"td_533x261":{"file":"Copy-of-RRB-NTPC-100-Chemistry-533x261.png","width":533,"height":261,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-533x261.png"},"td_534x462":{"file":"Copy-of-RRB-NTPC-100-Chemistry-534x462.png","width":534,"height":462,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-534x462.png"},"td_696x0":{"file":"Copy-of-RRB-NTPC-100-Chemistry-696x392.png","width":696,"height":392,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-696x392.png"},"td_696x385":{"file":"Copy-of-RRB-NTPC-100-Chemistry-696x385.png","width":696,"height":385,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-696x385.png"},"td_741x486":{"file":"Copy-of-RRB-NTPC-100-Chemistry-741x486.png","width":741,"height":486,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-741x486.png"},"td_1068x580":{"file":"Copy-of-RRB-NTPC-100-Chemistry-1068x580.png","width":1068,"height":580,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-1068x580.png"},"td_1068x0":{"file":"Copy-of-RRB-NTPC-100-Chemistry-1068x601.png","width":1068,"height":601,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/08\/Copy-of-RRB-NTPC-100-Chemistry-1068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