PHYSICS MULTIPLE CHOICE QUESTIONS SET 169

PHYSICS 

MULTIPLE CHOICE QUESTIONS SET 169

1. The Important unit of a microprocessor Is
(a)ALU
(b)array of registers
(c)control unit
(d)All of the above

2. Which one of the following has the highest value of specific heat?
(a)Glass
(b)Copper
(c)Lead
(d)Water

3. The device used for locating submerged objects under sea is
(a)sonar
(b)radar
(c)laser
(d)maser

4. The metal whose electrical conductivity is more is
(a) copper
(b) aluminum
(c) silver
(d) lead

5. What happens to a liquid when the vapour pressure equals the atmospheric pressure?
(a)The liquid cools
(b)The liquid boils
(c)No change
(d)The liquid evaporates

6. In nuclear reactor heavy water is used as
(a)coolant the outer metallic body of the appliance the outer metallic body of the appliance the outer metallic body of the appliance 
(b)fuel
(c)moderator
(d)atomic smasher

7. Water boils at a lower temperature on the hills because
(a)it is cold on the hills
(b)there is less carbon dioxide on the hills
(c)there is a decrease in air pressure on the hills
(d)There is less oxygen

8. Why do birds not have respiratory trouble at the time of flying at high altitude ?
(a)Their lungs are very large
(b)They fly Inactively
(c)They have extra air sacs
(d)They use less oxygen

9. The temperature which has the same reading on both Fahrenheit and Celsius scales is
(a)40°
 (b)40°
(c)34°
(d)140°

10. Kilowatt hour is the unit of
(a)Energy
(b)Power
(c)Force
(d)Momentum ANSWER:
1 d 
2 d 
3 a 
4 c 
5 b 
6 c 
7 c 
8 c 
9 b 
10 a