Chemistry 6 (SSC Previous Years Asked Questions)

1. Nonstick kitchenwares are coated with

     (a) FVC
     (b) Graphite
     (c) Teflon
     (d) Silicon

2. What is the maximum water vapour content in the atmosphere?

     (a) 2 to 3 percent
     (b) 3 to 4 percent
     (c) 4 to 5 percent
     (d) 5 to 6 percent

3. One of the constituents of tear gas is

     (a) Ethane
     (b) Ethanol
     (c) Ether
     (d) Chloropicrin

4. If all bullets could not be removed from gunshot injury of a man it may cause poisoning by

     (a) Mercury
     (b) Lead
     (c) Iron
     (d) Arsenic

5. White phosphorus is always kept under

     (a) Benzene
     (b) Kerosene
     (c) Ether
     (d) Water

6. Galena is a mineral of

     (a) Iron
     (b) Gold
     (c) Lead
     (d) Calcium

7. The substance is added to make natural rubber strong and more bouncy is

     (a) Polythene
     (b) Sponge
     (c) Sulpher
     (d) Chlorine

8. The most commonly used chemicals in the artificial rain making or cloud seeding are

     (a) Silver Iodide (AgI)
     (b) sodium Chloride (NaCl)
     (c) Dry Ice (Frozen CO₂)
     (d) All of the above

9. The constituents of automobile exhaust that can cause cancer is are :

     (a) Oxides of nitrogen
     (b) Carbon monoxide
     (c) Polycyclic hydrocarbons
     (d) Lead

10. Dry powder fire extinguishers contain

     (a) sand
     (b) sand and sodium carbonate
     (c) sand and potassium carbonate
     (d) sand and sodium bicarbonate

11. Cooking gas is a mixture of

     (a) methane and ethylene
     (b) carbon dioxide and oxygen
     (c) butane and propane
     (d) carbon monoxide and carbon dioxide

12. Cement is formed by strongly heating a mixture of

     (a) limestone and graphite
     (b) limestone and clay
     (c) chalk and graphite
     (d) clay and graphite

13. Raw materials used for the manufacturing of glass are

     (a) sand soda limestone
     (b) sand charcoal soda
     (c) limestone charcoal sulphur
     (d) sand sulphur soda

14. Which type of glass is used for making glass reinforced plastic?

     (a) Pyrex glass
     (b) Flint glass
     (c) Quartz glass
     (d) Fibre glass

15. Candle is a mixture of

     (a) Paraffin wax and stearic acid
     (b) Bees wax and stearic acid
     (c) Higher fatty acids and stearic acid
     (d) Bees wax and paraffin wax

 

Answer: (1) c (2) b (3) d (4) b (5) d (6) c (7) c (8) a (9) d (10) d (11) c (12) b (13) a (14) d (15) a