alloys, carbon & its various forms, hydrogen & compounds, sulphur, nitrogen, halogen & inert gases - Category wise Question and Answer Practice Test with Solutions

Question : 1 [IAS (Pre) 2000]

Consider the following statements. Hard water is not suitable for

1. Drinking
2. Washing clothes with soap
3. Use in boilers
4. Irrigating crops

a) 1, 2, 3 and 4

b) 1, 2 and 4

c) 1 and 2

d) 2 and 3

Question : 2 [PCS (Pre) 2002]

Which of the following gas is used as tear gas?

a) $SO_2$

b) $NH_3$

c) $H_2$

d) $Cl_2$

Question : 3 [RAS/RTS (Pre) 2008]

By which process the sea water can be converted into pure water?

a) Reverse osmosis

b) Electric separation

c) Deliquescence

d) Efflorescence

Question : 4 [PCS (Pre) 2016]

Water gas is

a) $CO_2 + H_2O$

b) CO + $H_2$

c) CO + $H_2O$

d) $CO_2 + H_2$

Question : 5 [MPPCS (Pre) 1991]

What is heavy water?

a) Heavy Hydrogen + Heavy Oxygen

b) Hydrogen + New Oxygen

c) Oxygen + Heavy Hydrogen

d) Hydrogen + Oxygen