MCQs
Q1
Dimensional formula of specific heat is
a.
[latex][ML^2T^{-2}K^{-1}][/latex]
b.
[latex][M^0L^2T^{-2}K^{-1}][/latex]
c.
[latex][M^{-2}L^2T^{-2}K][/latex]
d.
[latex][M^0L^2T^{-2}K^{-1}][/latex]
Show answer
Correct answer: (B)
Q2
A body of mass 400 g and specific heat 0.1 in cgs system of units has a water equivalent
a.
400 g
b.
40 g
c.
4 g
d.
0.4 g
Show answer
Correct answer: (B)
Q3
A liquid boils when its vapor pressure is
a.
equal to total external pressure on its surface
b.
greater than total external pressure on its surface
c.
less than external pressure on its surface
d.
equals to atmospheric pressure
Show answer
Correct answer: (A)
Q4
The substance which expands on melting, the increase in pressure results
a.
increase in melting point
b.
decrease in melting point
c.
no change in melting point
d.
it may increase or decrease of depending upon nature of substance
Show answer
Correct answer: (A)
Q5
In Kathmandu, water can be boiled at [latex]100^oC[/latex] by
a.
increasing pressure
b.
decreasing pressure
c.
supplying heat rapidly
d.
increasing its thermal conductivity
Show answer
Correct answer: (A)
Q6
Surfusion is
a.
super cooling
b.
surface tension
c.
surface fusion
d.
evaporation
Show answer
Correct answer: (A)
Q7
In the steady state, the temperature of the body
a.
increases with time
b.
decreases with time
c.
does not change and remains same all over the body
d.
does not change but may be different at different part of the body
Show answer
Correct answer: (D)
Q8
For the substance which expands on melting, the increase in pressure results
a.
increase in melting point
b.
decrease in melting point
c.
no change in melting point
d.
it may increase or decrease of depending upon nature of substance
Show answer
Correct answer: (A)
Q9
Heat required to convert 10gm of ice at [latex]0^oC into steam at [latex]100^oC[/latex] is
a.
1000 cal
b.
5360 cal
c.
6160 cal
d.
7200 cal
Show answer
Correct answer: (D)
Q10
5 gm ice at [latex]0^oC[/latex] is mixed with 10gm water at [latex]10^oC[/latex], the resulting temperature is
a.
in between [latex]5^oC and 10^oC[/latex]
b.
between [latex]0^oC and 5^oC[/latex]
c.
zero
d.
[latex]10^oC[/latex]
Show answer
Correct answer: (C)
Q11
80gm of water at [latex]30^oC[/latex] is poured on a large block of ice at [latex]0^oC. The mass of ice that melts is
a.
30gm
b.
50gm
c.
150gm
d.
160gm
Show answer
Correct answer: (A)
Q12
The temperature of a piece of aluminium of 20gm mass is [latex]90^oC[/latex]. It is placed on ice. If ice melted is 50gm, the specific heat of aluminium in [latex]cal/gm^oC[/latex] is
a.
1
b.
3.22
c.
2.22
d.
5.32
🔒
You've reached the end of the free preview. Continue with NN Premium.
- Complete access to every Premium chapter
- Notes, QBank, solutions & MCQs
- Premium PDFs & study resources
- Entrance preparation & mock tests
One NN Premium subscription unlocks everything.