Physics Test 22

Total Questions: 21

1 - Specific heat capacity of water is

A ) Comparatively less
B ) Comparatively high
C ) Very high ✅
D ) None

2 - The unit of heat capacity is

A ) JKg-¹ K-¹
B ) JK-¹ ✅
C ) JKgK-¹
D ) JKgK

3 - The capacity of 5Kg water is

A ) 2100 JK-¹
B ) 21000 JK-¹ ✅
C ) 4200 JK-¹
D ) 42000 JK-¹

4 - That temperature at which a solid melts is called.

A ) Boiling point
B ) Melting point ✅
C ) Reference point
D ) None

5 - Latent heat of fusion of ice is

A ) 3.36×10⁵ JKg-¹ ✅
B ) 336 × 10⁵ JKg-¹
C ) 636 × 10⁵ JKg-¹
D ) 8.36 × 10⁵ JKg-¹

6 - The unit of laten heat of fusion is

A ) JKg-¹ ✅
B ) JKg-¹ K-¹
C ) JKgK-¹
D ) JKgK

7 - Latent heat of vaporization of water is

A ) 2.26× 10⁶ JKg-¹ ✅
B ) 3.26× 10⁶ JKg-¹
C ) 4.26 × 10⁶ JKg-¹
D ) 5.26 × 10⁶ JKg-¹

8 - Escape out of liquid molecules from its surface without heating it is called

A ) Vaporization
B ) Evaporation ✅
C ) Sublimation
D ) None

9 - Unit of coefficient of linear thermal expansion is

A ) JK-¹
B ) JKg-¹
C ) K-¹ ✅
D ) J-¹

10 - Value of coefficient of linear thermal expansion of aluminium is

A ) 2.4 × 10-⁵ K-¹ ✅
B ) 2.5 x 10-⁵ K-¹
C ) 2.6 x 10-⁵ K-¹
D ) 3.5 x 10-⁵ K-¹

11 - Value of coefficient of liner thermal expansion of copper is

A ) 1.7 x 10 -⁵ K-¹ ✅
B ) 2.7 x 10-⁵ K-¹
C ) 3.7 x 10-⁵ K-¹
D ) 4.7 x 10-⁵ K-¹

12 - Unit of coefficient of volume thermal expansion is

A ) Kg-¹
B ) JKg-¹
C ) JKgK-¹
D ) K-¹ ✅

13 - Value of coefficient of volume thermal expansion of steel is

A ) 3.6 x 10-⁵ K-¹ ✅
B ) 2.6 x 10-⁵ K-¹
C ) 3.9 x 10-⁵ K-¹
D ) 4.6 x 10-⁵ K-¹

15 - Temperature at which water converts into ice is

A ) 0°F
B ) 32°F ✅
C ) -273K
D ) 0 K

16 - Normal human body temperature is____

A ) 37° F
B ) 32° F ✅
C ) -273 K
D ) 0 K

17 - Normal human body temperature is

A ) 37° F
B ) 98.6°C
C ) 98.6 °F ✅
D ) 15 °F

18 - Mercury is used as thermotic material because it has

A ) Uniform expansion
B ) Low freezing point
C ) Low heat capacity
D ) All

19 - Which material has large specific heat?

A ) Copper
B ) Ice
C ) Water ✅
D ) Mercury

21 - In solid linear thermal expansion value of coefficient is 2×10 -⁵ K-¹. What value in volume thermal expansion

A ) 2 x 10-⁵ K-¹
B ) 6 x 10-⁵ K-¹ ✅
C ) 8×10-⁵ K-¹
D ) 18×10-⁵ K-¹