{"id":36237,"date":"2019-10-17T13:38:49","date_gmt":"2019-10-17T08:08:49","guid":{"rendered":"https:\/\/cracku.in\/blog\/?p=36237"},"modified":"2019-10-17T15:22:52","modified_gmt":"2019-10-17T09:52:52","slug":"top-20-chemistry-questions-for-rrb-ntpc-2019-pdf-in-english","status":"publish","type":"post","link":"https:\/\/cracku.in\/blog\/top-20-chemistry-questions-for-rrb-ntpc-2019-pdf-in-english\/","title":{"rendered":"Top-20 Chemistry Questions for RRB-NTPC 2019 PDF"},"content":{"rendered":"<h1><span style=\"text-decoration: underline; font-family: 'times new roman', times, serif; font-size: 18pt;\"><strong>Top-20 Chemistry Questions for RRB-NTPC 2019 PDF<\/strong><\/span><\/h1>\n<p>Latest and most Important Chemistry Questions to crack RRB NTPC Exam. Download the PDF and go through the video explanations of most important Chemistry Questions\u00a0 and practice them by downloading the PDF provided below.<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/downloads\/6713\" target=\"_blank\" class=\"btn btn-danger  download\">Download Important Chemistry Questions PDF<\/a><\/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>Download <a href=\"https:\/\/cracku.in\/railways-ntpc-previous-papers\" target=\"_blank\" rel=\"noopener\">RRB NTPC Previous Papers PDF<\/a><\/p>\n<h2>Read this Post in <a style=\"color: blue;\" href=\"https:\/\/cracku.in\/blog\/te\/top-20-chemistry-questions-for-rrb-ntpc-2019-pdf-in-telugu\/\">Telugu<\/a><\/h2>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/TRF34bzGFXU\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p><b>Question 1:\u00a0<\/b>The compound used in the anti-malarial drug is?<\/p>\n<p>a)\u00a0Chloroquin<\/p>\n<p>b)\u00a0Asprin<\/p>\n<p>c)\u00a0Neoprene<\/p>\n<p>d)\u00a0Isoprene<\/p>\n<p><b>Question 2:\u00a0<\/b>__________ is an efflorescence compound<\/p>\n<p>a)\u00a0MgCl$_{2}$<\/p>\n<p>b)\u00a0CaCl$_{2}$<\/p>\n<p>c)\u00a0Na$_{2}$CO$_{3}$<\/p>\n<p>d)\u00a0ZnCl$_{2}$<\/p>\n<p><b>Question 3:\u00a0<\/b>Which one of the following is an example of thermoplastic?<\/p>\n<p>a)\u00a0Polyethylene<\/p>\n<p>b)\u00a0Bakelite<\/p>\n<p>c)\u00a0Glyptal<\/p>\n<p>d)\u00a0Terylene<\/p>\n<p><b>Question 4:\u00a0<\/b>The elements with same mass number but different atomic numbers are referred to?<\/p>\n<p>a)\u00a0Isotopes<\/p>\n<p>b)\u00a0Isotones<\/p>\n<p>c)\u00a0Isobars<\/p>\n<p>d)\u00a0None of these<\/p>\n<p><b>Question 5:\u00a0<\/b>Which one of the following is used to produce green color while burning crackers?<\/p>\n<p>a)\u00a0Aluminium powder<\/p>\n<p>b)\u00a0Sodium salt<\/p>\n<p>c)\u00a0Strontium sulphate<\/p>\n<p>d)\u00a0Barium salt<\/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:\/\/www.youtube.com\/channel\/UCMDJPaiDdRPv2mrEJoLfklA?sub_confirmation=1\" target=\"_blank\" class=\"btn btn-warning \">FREE RRB NTPC YOUTUBE VIDEOS<\/a><\/p>\n<p><b>Question 6:\u00a0<\/b>After some days, statues of brass and bronze become green due to:<\/p>\n<p>a)\u00a0oxidation<\/p>\n<p>b)\u00a0corrosion<\/p>\n<p>c)\u00a0erosion<\/p>\n<p>d)\u00a0decomposition<\/p>\n<p><b>Question 7:\u00a0<\/b>Which of the following is not a chemical change?<\/p>\n<p>a)\u00a0Melting of ice<\/p>\n<p>b)\u00a0Souring of milk<\/p>\n<p>c)\u00a0Burning of paper<\/p>\n<p>d)\u00a0Digestion of food<\/p>\n<p><b>Question 8:\u00a0<\/b>Which one of the following is used to produce artificial rain?<\/p>\n<p>a)\u00a0Potassium Iodide<\/p>\n<p>b)\u00a0Silver Iodide<\/p>\n<p>c)\u00a0Solid Carbon Dioxide<\/p>\n<p>d)\u00a0All of the above<\/p>\n<p><b>Question 9:\u00a0<\/b>&#8230;&#8230;&#8230;. is a chemical process or a reaction between fuel (hydrocarbon) and oxygen. producing heat and light energy resulting in a flame.<\/p>\n<p>a)\u00a0Convection<\/p>\n<p>b)\u00a0Carbonisation<\/p>\n<p>c)\u00a0Combustion<\/p>\n<p>d)\u00a0Conduction<\/p>\n<p><b>Question 10:\u00a0<\/b>When a substance loses oxygen during a reaction then it is said to be ?<\/p>\n<p>a)\u00a0Oxidised<\/p>\n<p>b)\u00a0Deoxidised<\/p>\n<p>c)\u00a0Reduced<\/p>\n<p>d)\u00a0None of the above<\/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 11:\u00a0<\/b>Which of the following is used in Fire Extinguishers?<\/p>\n<p>a)\u00a0Oxygen<\/p>\n<p>b)\u00a0Sulpherdioxide<\/p>\n<p>c)\u00a0Carbondioxide<\/p>\n<p>d)\u00a0Methane<\/p>\n<p><b>Question 12:\u00a0<\/b>&#8230;&#8230;&#8230;.. compound is used as a drying agent.<\/p>\n<p>a)\u00a0Calcium oxide<\/p>\n<p>b)\u00a0Calcium carbide<\/p>\n<p>c)\u00a0Gypsum<\/p>\n<p>d)\u00a0Calcium carbonate<\/p>\n<p><b>Question 13:\u00a0<\/b>&#8230;&#8230;&#8230;&#8230;.is the fourth state of matter.<\/p>\n<p>a)\u00a0Plasma<\/p>\n<p>b)\u00a0Steam<\/p>\n<p>c)\u00a0Gas<\/p>\n<p>d)\u00a0Matteroid<\/p>\n<p><b>Question 14:\u00a0<\/b>In aluminium casting bubbles of argon or nitrogen are passed through the molten<\/p>\n<p>a)\u00a0to improve surface finish of the casting<\/p>\n<p>b)\u00a0to remove hydrogen as porosity<\/p>\n<p>c)\u00a0to precipitate the inclusions<\/p>\n<p>d)\u00a0to mix the alloy elements<\/p>\n<p><b>Question 15:\u00a0<\/b>Which of the following does not sublimate ?<\/p>\n<p>a)\u00a0Ice<\/p>\n<p>b)\u00a0Ammonium chloride<\/p>\n<p>c)\u00a0Napthalene<\/p>\n<p>d)\u00a0Camphor<\/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 16:\u00a0<\/b>Acid rain is caused by presence of which of the following gases in the atmosphere<\/p>\n<p>a)\u00a0Nitrogen and Oxygen<\/p>\n<p>b)\u00a0Sulphur dioxide and Nitrogen oxide<\/p>\n<p>c)\u00a0Carbon dioxide and Carbon -mono- oxide<\/p>\n<p>d)\u00a0Ozone and argon<\/p>\n<p><b>Question 17:\u00a0<\/b>Which of the following is the most electro-negative element?<\/p>\n<p>a)\u00a0Francium<\/p>\n<p>b)\u00a0Bromine<\/p>\n<p>c)\u00a0Fluorine<\/p>\n<p>d)\u00a0Pottasium<\/p>\n<p><b>Question 18:\u00a0<\/b>Which among the following is a liquid non-metal at room temperature?<\/p>\n<p>a)\u00a0Sulphur<\/p>\n<p>b)\u00a0Flourine<\/p>\n<p>c)\u00a0Chlorine<\/p>\n<p>d)\u00a0Bromine<\/p>\n<p><b>Question 19:\u00a0<\/b>Which colloidal solution has liquid as both dispersed phase and medium?<\/p>\n<p>a)\u00a0Suspension<\/p>\n<p>b)\u00a0Cream<\/p>\n<p>c)\u00a0Gel<\/p>\n<p>d)\u00a0Emulsion<\/p>\n<p><b>Question 20:\u00a0<\/b>Stainless steel is an alloy formed from the mixture of _____.<\/p>\n<p>a)\u00a0Iron, carbon, chromium, Platinum<\/p>\n<p>b)\u00a0Iron, carbon, chromium, nickel<\/p>\n<p>c)\u00a0Iron, carbon, copper, nickel<\/p>\n<p>d)\u00a0Iron, Aluminium, chromium, nickel<\/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><span style=\"text-decoration: underline;\"><strong>Answers &amp; Solutions:<\/strong><\/span><\/p>\n<p><strong>1)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p><strong>2)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p><strong>3)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p><strong>4)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p><strong>5)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p><strong>6)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p><strong>7)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p><strong>8)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p><strong>9)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p><strong>10)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p><strong>11)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p><strong>12)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p><strong>13)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p><strong>14)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p><strong>15)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p><strong>16)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p><strong>17)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p><strong>18)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p><strong>19)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p><strong>20)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<!-- Error, Advert is not available at this time due to schedule\/geolocation restrictions! -->\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 Questions on Important Chemistry PDF\u00a0 for RRB NTPC Exam will be highly useful for your Preparation.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Top-20 Chemistry Questions for RRB-NTPC 2019 PDF Latest and most Important Chemistry Questions to crack RRB NTPC Exam. Download the PDF and go through the video explanations of most important Chemistry Questions\u00a0 and practice them by downloading the PDF provided below. Take a free mock test for RRB NTPC Download RRB NTPC Previous Papers PDF [&hellip;]<\/p>\n","protected":false},"author":50,"featured_media":36261,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[169,230,31,1679,1897,1605,1603,1601,1673],"tags":[168,1619,2218],"class_list":{"0":"post-36237","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-downloads","8":"category-gk","9":"category-railways","10":"category-rrb-group-d","11":"category-rrb-group-d-2","12":"category-rrb-je","13":"category-rrb-ntpc","14":"category-rrb-ntpc-je","15":"category-rrb-para-medical-categories","16":"tag-download-pdf","17":"tag-rrb-ntpc-2019","18":"tag-rrb-ntpc-chemistry-questions"},"better_featured_image":{"id":36261,"alt_text":"","caption":"","description":"","media_type":"image","media_details":{"width":1280,"height":720,"file":"2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1.png","sizes":{"thumbnail":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-150x150.png","width":150,"height":150,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-150x150.png"},"medium":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-300x169.png","width":300,"height":169,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-300x169.png"},"medium_large":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-768x432.png","width":768,"height":432,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-768x432.png"},"large":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-1024x576.png","width":1024,"height":576,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-1024x576.png"},"tiny-lazy":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-30x17.png","width":30,"height":17,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-30x17.png"},"td_80x60":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-80x60.png","width":80,"height":60,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-80x60.png"},"td_100x70":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-100x70.png","width":100,"height":70,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-100x70.png"},"td_218x150":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-218x150.png","width":218,"height":150,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-218x150.png"},"td_265x198":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-265x198.png","width":265,"height":198,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-265x198.png"},"td_324x160":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-324x160.png","width":324,"height":160,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-324x160.png"},"td_324x235":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-324x235.png","width":324,"height":235,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-324x235.png"},"td_324x400":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-324x400.png","width":324,"height":400,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-324x400.png"},"td_356x220":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-356x220.png","width":356,"height":220,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-356x220.png"},"td_356x364":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-356x364.png","width":356,"height":364,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-356x364.png"},"td_533x261":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-533x261.png","width":533,"height":261,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-533x261.png"},"td_534x462":{"file":"Copy-of-rrb-ntpc-chemistry-questions-1-534x462.png","width":534,"height":462,"mime-type":"image\/png","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/10\/Copy-of-rrb-ntpc-chemistry-questions-1-534x462.png"},"td_696x0":{"file":"Copy-of-rrb-ntp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