GENERAL SCIENCE MCQS SET 08

GENERAL SCIENCE MCQS SET 08

1.  Air shows the property of      
(a)  N2
(b)  O2      
(c)  Both (a) and (b)
(d)  None of these.
 

2.  The components of water can be separated by      
(a)  Physical methods
(b)  Chemical methods      
(c)  Both
(d)  They can't be separated
 

3.  Mixture can be      
(a)  homogeneous
(b)  heterogeneous      
(c)  Both (a) and (b)
(d)  pure substance
 

4.  Brass is a      
(a)  Compound
(b)  Element      
(c)  Homogeneous mixture
(d)  Heterogeneous mixture
 

5.  In sugar solution,
 (a)  Sugar is solute, water is solvent
(b)  Sugar is solvent, water is solute
(c)  Both are solutes
(d)  Both are solvents.
 

6.  Brass is a solution of molten copper in      
(a)  solid zinc
(b)  molten zinc      
(c)  gaseous zinc
(d)  molten tin
 

7.  24 carat of diamond is equal to      
(a)  200 mg
(b)  200 g      
(c)  95% mg
(d)  91% gold
 

8.  1 carat of diamond is equal to      
(a)  200 mg
(b)  200 g      
(c)  100 mg
(d)  100 g
 

9.  Diamond is lustrous because      
(a)  it is colourless
(b)  it is hard      
(c)  it is pure
(d)  its refractive index is high
 

10.  If we burn graphite,

(a)  residue will be left
(b)  no residue will be left
(c)  it will not burn
(d)  it will change into diamond.
 

ANSWER:

1. (c)    

2. (b)    

3. (c)    

4. (c)    

5. (a)
6. (b)    

7. (a)    

8. (a)    

9. (d)    

10. (b)