GATEWAY TO CGL MAINS 2015 : Chemistry Quiz

1. The most electropositive elements among the following is :

A.Cs

B.Ca

C.Na

D.Br

2. Which one is an organic Acid ?

A.Sulphuric

B.Citric

C.Nitric

D.Phosphoric

3. The gas used for artificial ripening of green fruit is ?

A.ethane

B.ethylene

C.carbon dioxide

D.acetylene

4. The main chemical constituent of clay is ?

A.aluminium silicate

B.zeolites

C.aluminium borosilicate

D.silicon oxide

5. Which element found in all organic compounds ?

A.carbon

B.nitrogen

C.calcium

D.none of them

6. All noble gases are ?

A.colourless

B.colourless

C.colourless and odourless

D.colourless and but have odour

7. What is hottest part of the gas flame is called ?

A.blue zone

B.luminous zone

C.dark zone

D.non-luminous zone

8. Faraday's Law is associated with

A.Reaction of gases

B.Pressure of gases

C.Electrolysis

D.Temperature and pressure

9. Elements that show the properties of both metals and non metals are called ?

A.metalloids

B.allotropes

C.alloys

D.colloids

10. Ozone is :

A.Non-magnetic

B.Paramagnetic

C.Ferromagnetic

D.Diamagnetic

ANSWER KEY:
1 - (A)
2 - (B)
3 - (B)
4 - (A)
5 - (A)
6 - (C)
7 - (D)
8 - (C)
9 - (A)
10- (D)