{"id":43414,"date":"2020-11-04T17:03:38","date_gmt":"2020-11-04T11:33:38","guid":{"rendered":"https:\/\/cracku.in\/blog\/?p=43414"},"modified":"2020-11-04T17:03:38","modified_gmt":"2020-11-04T11:33:38","slug":"top-30-chemistry-questions-for-rrb-ntpc-pdf","status":"publish","type":"post","link":"https:\/\/cracku.in\/blog\/top-30-chemistry-questions-for-rrb-ntpc-pdf\/","title":{"rendered":"Top-30 Chemistry Questions for RRB NTPC PDF"},"content":{"rendered":"

Top-30 Chemistry Questions for RRB NTPC PDF<\/strong><\/span><\/h2>\n

Download RRB NTPC Top-30 Chemistry Questions PDF. Questions based on asked questions in previous exam papers very important for the Railway NTPC exam.<\/p>\n

Download Top-30 Chemistry Questions for RRB NTPC PDF<\/a><\/p>\n

Take a free mock test for RRB NTPC<\/a><\/p>\n

Download RRB NTPC Previous Papers PDF<\/a><\/p>\n\n

Question 1:\u00a0<\/b>Tiny marine animals which constitute limestone skeletons are called<\/p>\n

a)\u00a0foraminifera<\/p>\n

b)\u00a0coral reefs<\/p>\n

c)\u00a0diatoms<\/p>\n

d)\u00a0clamitomonous<\/p>\n

Question 2:\u00a0<\/b>Why is Compressed Natural Gas (CNG) considered as eco- friendly ?<\/p>\n

a)\u00a0It has very low quantity of hydro -carbons<\/p>\n

b)\u00a0Its main content (80-90%) is Ethane gas<\/p>\n

c)\u00a0It has very low carbon monoxide<\/p>\n

d)\u00a0Gases present in CNG do not burn fully hence emission remain low<\/p>\n

e)\u00a0None of these<\/p>\n

Question 3:\u00a0<\/b>Which of the following is not found in the atmosphere ?<\/p>\n

a)\u00a0Oxygen<\/p>\n

b)\u00a0Hydrogen<\/p>\n

c)\u00a0Carbon dioxide<\/p>\n

d)\u00a0Barium<\/p>\n

Question 4:\u00a0<\/b>The main chemical substance present in bones and teeth of animals is<\/p>\n

a)\u00a0Sodium Chloride<\/p>\n

b)\u00a0Sugar<\/p>\n

c)\u00a0Calcium phosphate<\/p>\n

d)\u00a0Calcium Sulphate<\/p>\n

Question 5:\u00a0<\/b>It is easy to burst a gas-filled balloon with a needle than with a nail. It is because<\/p>\n

a)\u00a0nail is more longer than needle.<\/p>\n

b)\u00a0nail exerts more pressure than needle on the balloon.<\/p>\n

c)\u00a0needle exerts more pressure than nail on the balloon.<\/p>\n

d)\u00a0gas is reactive with the needle.<\/p>\n

Question 6:\u00a0<\/b>The apparatus used to test acidity of aqueous solution is<\/p>\n

a)\u00a0pH meter<\/p>\n

b)\u00a0Ammeter<\/p>\n

c)\u00a0Hygrometer<\/p>\n

d)\u00a0Acidmeter<\/p>\n

Question 7:\u00a0<\/b>Transboundary pollution (or) Acid rain is caused by :<\/p>\n

a)\u00a0Carbon monoxide<\/p>\n

b)\u00a0Carbon dioxide<\/p>\n

c)\u00a0Hydrocarbon<\/p>\n

d)\u00a0Nitrogen oxide and sulphur dioxide<\/p>\n

Question 8:\u00a0<\/b>The element absorbed both in cation and anion form is<\/p>\n

a)\u00a0Sulphur<\/p>\n

b)\u00a0Nitrogen<\/p>\n

c)\u00a0Calcium<\/p>\n

d)\u00a0Phosphorus<\/p>\n

Question 9:\u00a0<\/b>Drying oils contain a fairly large proportion of:<\/p>\n

a)\u00a0Unsaturaled fatty acids<\/p>\n

b)\u00a0Fats<\/p>\n

c)\u00a0Proteins<\/p>\n

d)\u00a0Saturated fatty acids<\/p>\n

Question 10:\u00a0<\/b>Green house effect in the environment is due to the increase of<\/p>\n

a)\u00a0Ozone<\/p>\n

b)\u00a0Sulphur dioxide<\/p>\n

c)\u00a0Carbon dioxide<\/p>\n

d)\u00a0Carbon monoxide<\/p>\n

FREE RRB NTPC MOCK TEST<\/a><\/p>\n

FREE RRB NTPC YOUTUBE VIDEOS<\/a><\/p>\n

Question 11:\u00a0<\/b>From which process pure alcohol can be obtained<\/p>\n

a)\u00a0Oscillation<\/p>\n

b)\u00a0Oxidation<\/p>\n

c)\u00a0Crystallization<\/p>\n

d)\u00a0Amalgamation<\/p>\n

e)\u00a0None of these<\/p>\n

Question 12:\u00a0<\/b>Cement is made hard with ?<\/p>\n

a)\u00a0Dehydration<\/p>\n

b)\u00a0Hydration and dissociation of water<\/p>\n

c)\u00a0Dissociation of water<\/p>\n

d)\u00a0Polymerisation<\/p>\n

Question 13:\u00a0<\/b>The anode in a dry cell consists of?<\/p>\n

a)\u00a0Copper<\/p>\n

b)\u00a0Zinc<\/p>\n

c)\u00a0Cadmium<\/p>\n

d)\u00a0Graphite<\/p>\n

Question 14:\u00a0<\/b>What is washing soda?<\/p>\n

a)\u00a0Aluminium bicarbonate<\/p>\n

b)\u00a0Sodium bicarbonate<\/p>\n

c)\u00a0Aluminium sulphate<\/p>\n

d)\u00a0Sodium carbonate<\/p>\n

Question 15:\u00a0<\/b>All of the following are excretory (waste) products of animals, except<\/p>\n

a)\u00a0Uric Acid<\/p>\n

b)\u00a0Ammonia<\/p>\n

c)\u00a0Carbohydrates<\/p>\n

d)\u00a0Urea<\/p>\n

Question 16:\u00a0<\/b>Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?<\/p>\n

a)\u00a0BCl3<\/p>\n

b)\u00a0Ni(CO)4<\/p>\n

c)\u00a0CH3OH<\/p>\n

d)\u00a0CClF3<\/p>\n

Question 17:\u00a0<\/b>Atomic number of which of the following elements is greater than that of Neon?<\/p>\n

a)\u00a0Oxygen<\/p>\n

b)\u00a0Magnesium<\/p>\n

c)\u00a0Nitrogen<\/p>\n

d)\u00a0Boron<\/p>\n

Question 18:\u00a0<\/b>Which of the following elements has the lowest melting point?<\/p>\n

a)\u00a0Oxygen<\/p>\n

b)\u00a0Gold<\/p>\n

c)\u00a0Silver<\/p>\n

d)\u00a0Manganese<\/p>\n

Question 19:\u00a0<\/b>Release of which among the following is the primary reason for depletion of the ozone layer?<\/p>\n

a)\u00a0Nitrous oxide<\/p>\n

b)\u00a0Hydrogen dioxide<\/p>\n

c)\u00a0Chloro\ufb02uro carbon<\/p>\n

d)\u00a0Carbon monoxide<\/p>\n

Question 20:\u00a0<\/b>The Chemical formula of Urea is<\/p>\n

a)\u00a0(NHd:2CO2<\/p>\n

b)\u00a0(NHb:CO<\/p>\n

c)\u00a0(NH<\/p>\n

d)\u00a02CO2
\nb: (NHb:CO
\nc: (NHd:2CO
\nd: (NHb:2CO<\/p>\n

RRB NTPC Previous Papers [Download PDF]<\/a><\/p>\n

Download General Science Notes PDF<\/a><\/p>\n

Question 21:\u00a0<\/b>The common name of sulphur is<\/p>\n

a)\u00a0Freon<\/p>\n

b)\u00a0galena<\/p>\n

c)\u00a0lime<\/p>\n

d)\u00a0brimstone<\/p>\n

Question 22:\u00a0<\/b>The common name of hydrogen peroxide is<\/p>\n

a)\u00a0borax<\/p>\n

b)\u00a0bleach (liquid)<\/p>\n

c)\u00a0baking soda<\/p>\n

d)\u00a0gypsum<\/p>\n

Question 23:\u00a0<\/b>Which of the following elements has the lowest melting point?<\/p>\n

a)\u00a0Sodium<\/p>\n

b)\u00a0Tin<\/p>\n

c)\u00a0Radon<\/p>\n

d)\u00a0Radium<\/p>\n

Question 24:\u00a0<\/b>Which of the following gases emitted from automobile exhaust is poisonous?<\/p>\n

a)\u00a0Carbon monoxide<\/p>\n

b)\u00a0Carbon dioxide<\/p>\n

c)\u00a0Hydrocarbons<\/p>\n

d)\u00a0Sulphur dioxide<\/p>\n

Question 25:\u00a0<\/b>Using which of the following processes can one separate a solute from its solution?<\/p>\n

a)\u00a0Sedimentation<\/p>\n

b)\u00a0Evaporation<\/p>\n

c)\u00a0Filtration<\/p>\n

d)\u00a0Condensation<\/p>\n

Question 26:\u00a0<\/b>Process of gaining electrons is known as _____.<\/p>\n

a)\u00a0oxidation<\/p>\n

b)\u00a0reduction<\/p>\n

c)\u00a0radiation<\/p>\n

d)\u00a0both oxidation and reduction<\/p>\n

Question 27:\u00a0<\/b>What is nature of pH of Milk?<\/p>\n

a)\u00a0Slightly Acidic<\/p>\n

b)\u00a0Slightly Basic<\/p>\n

c)\u00a0Highly Acidic<\/p>\n

d)\u00a0Highly Basic<\/p>\n

Question 28:\u00a0<\/b>Which chemical is also known as Carbolic Acid?<\/p>\n

a)\u00a0Phenol<\/p>\n

b)\u00a0Hydroxide<\/p>\n

c)\u00a0Sulphuric Acid<\/p>\n

d)\u00a0Ethanol<\/p>\n

Question 29:\u00a0<\/b>The rubbing surface of a matchbox has powdered glass and a little red ________________.<\/p>\n

a)\u00a0antimony<\/p>\n

b)\u00a0arsenic<\/p>\n

c)\u00a0silicon<\/p>\n

d)\u00a0phosphorus<\/p>\n

Question 30:\u00a0<\/b>Zeolite is<\/p>\n

a)\u00a0hydrated ferric oxide<\/p>\n

b)\u00a0hydrated sodium aluminium silicate<\/p>\n

c)\u00a0sodium hexameta phosphate<\/p>\n

d)\u00a0sodium tetra borate<\/p>\n\n

DOWNLOAD APP FOR RRB FREE MOCKS<\/a><\/p>\n

Answers & Solutions:<\/strong><\/span><\/p>\n

1)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

2)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

3)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

4)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

5)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

6)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

7)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

8)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

9)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

10)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

11)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

12)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

13)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

14)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

15)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

16)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

17)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

18)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

19)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

20)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

21)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

22)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

23)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

24)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

25)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

26)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

27)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

28)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

29)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

30)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

DOWNLOAD APP FOR RRB FREE MOCKS<\/a><\/p>\n\n

We hope this Top-30 Chemistry Questions PDF for RRB NTPC exam will be highly useful for your Preparation.<\/p>\n","protected":false},"excerpt":{"rendered":"

Top-30 Chemistry Questions for RRB NTPC PDF Download RRB NTPC Top-30 Chemistry Questions PDF. Questions based on asked questions in previous exam papers very important for the Railway NTPC exam. Download RRB NTPC Previous Papers PDF Question 1:\u00a0Tiny marine animals which constitute limestone skeletons are called a)\u00a0foraminifera b)\u00a0coral reefs c)\u00a0diatoms d)\u00a0clamitomonous Question 2:\u00a0Why is Compressed […]<\/p>\n","protected":false},"author":42,"featured_media":43418,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[3167,125,31,1701,1679,1605,1603,1673],"tags":[4117,492,1635,1593,1681],"class_list":{"0":"post-43414","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-downloads-en","8":"category-featured","9":"category-railways","10":"category-rpf-si-and-constable","11":"category-rrb-group-d","12":"category-rrb-je","13":"category-rrb-ntpc","14":"category-rrb-para-medical-categories","15":"tag-railway-exams","16":"tag-rrb-group-d","17":"tag-rrb-je","18":"tag-rrb-ntpc","19":"tag-rrb-ntpc-je"},"better_featured_image":{"id":43418,"alt_text":"Top-30 Chemistry Questions for RRB NTPC PDF","caption":"Top-30 Chemistry Questions for RRB NTPC PDF\n","description":"Top-30 Chemistry Questions for RRB 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