GENERAL SCIENCE MCQS SET 13

GENERAL SCIENCE MCQS SET 13  

1. Zinc replaces copper from-
a. Zinc sulphate
b. Copper sulphate
c. sulphuric acid
d. Copper oxide
Ans:(b)
 
2. Metallic oxides are-
a. Acidic is nature
b. Neutral
c. Basic in nature
d. Either acidic or basic
Ans: (c)
 
3. Aluminium foil used for wrapping-
a. Food
b. Clothes
c. Plastic
d. Wires
Ans:(a)
 
4. Which one of the following is used for decorating sweets?
a. Aluminium foil
b. Copper foil
c. Silver foil
d. All of these
Ans:(c)
 
5. Which one of the following enhances the growth of plants?
a. Industrial gadgets
b. Fertilisers
c. Automobiles
d. Water boilers
Ans:(b)
 
6. Which one of the following is in crackers?
a. metals
b. Semi metals
c. Non-metal
d. All of these
Ans: (c)
 
7. Hydrogen gas produce when metal react with-
a. Acid
b. Base
c. Salt
d. Both acid & base
Ans: (b)
 
8. Which of the following can't be beaten into sheets?
a. Zinc
b. Iron
c. Aluminium
d. Sulphur
Ans: (d)
 
9. Heat conduction is the property of
a. Non-metal
b. Metal
c. Metalloids
d. All of these
Ans: (b)
 
10. Moist air is the combination of-
a. H2O+CO2+O2
b. H2O+ CO+O2
c. H2O+CO2+H2
d. H2O+O2+H2
Ans: (a)