SSC CGL 2017 Special : Chemistry Questions from Previous Papers - Set 1

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1. Baryllium Sulphate is less soluble in water due to ?
1. High inflammable energy
2. Low energy of dissociation
3. Low inflammable energy
4. Lonic band
2. What is the name of that system, which uses radioactivity to decide the period of materials of pre-historic period ? 
1. Radium dating
2. Uranium dating
   
3. Carbon dating
4. Deuterium dating
3. Cement is made hard with
1. dehydration
2. hydration and dissociation of water
3. dissociation of water
4. polymerisation
4. What happens when a chemical bond is formed ?
1. energy is always absorbed
2. energy is always released
3. more energy is released than is absorbed 
4. energy is neither released nor absorbed
5. Which among the following is a carbohydrate ?
1. Nylon
2. Cane-sugar
3. Turpentine
4. Hydrogen peroxide
6. In which of the following states maximum iron ore is found ?
1. FeCO3
2. Fe2O3
3. Fe3O4
4. FeS2
7. "All the four quantum numbers of two electrons in an atom are not the same". It is the law of _____________
1. Hund's
2. Exclusion Principle of Pauli
3. Uncertainty Principle of Hiesenberg
4. Avogadro's Law
8. Commercial nitric acid is coloured because it contains disolved :
1. Oxygen
2. Nitrous oxide
3. Nitrogen dioxide
4. Coloured impurities
9. Fertilizer having high nitrogen content is :
1. Urea
2. Ammonium sulphate
3. Ammonium nitrate
4. Calcium citrate
10. Where does the oxygen that keeps us alive come from ?
1. Carbon dioxide
2. Carbonates absorbed from soil
3. Oxides of minerals
4. Water
11. The gas used for artificial fruit ripening of green fruit is ________________
1. Ethylene
2. Acetylene
3. Ethane
4. Methane
12. The three elements most needed in common fertilisers are :
1. Sulphur, Phosphorous and Sodium
2. Nitrogen, Potassium and Phosphorous
3. Phosphorous, Sodium and Nitrogen
4. Calcium, Phosphorous and Potassium
13. Which one of the following metals pollutes the air of a city having large number of automobiles ?
1. Cadmium
2. Chromium
3. Lead
4. Copper
14.  What is the chemical name for 'baking soda' ?
1. Sodium carbonate
2. Sodium bicarbonate
3. Sodium nitrite
4. Sodium nitrate
15. An atomic pile is used for
1. producing X-rays
2. conducting nuclear fission
3. conducting thermonuclear fusion
4. accelerating atoms
16. Which of the following gases is present under pressure in soft drinks ?
1. Oxygen
2. Nitrogen
3. Carbon dioxide
4. Nitrous oxide
17. The substance which does not expand on going from liquid state to solid state is 
1. Water
2. Cast-iron
3. Aluminum
4. Type metal
18. The radio-active element used in heart pacemakers is 
1. Uranium
2. Deuterium
3. Plutonium
4. Radium
19. The element which is commonly used in nuclear for producing electricity by nuclear fission is 
1. Radium
2. Plutonium
3. Uranium
4. Deuterium
20. Table salt gets moist during rainy season because 
1. sodium chloride is hygroscopic
2. sodium chloride is deliquescent
3. sodium chloride contains some quantity of sodium iodide
4. sodium chloride contains hygroscopic impurities like magnesium chloride

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