1
AP EAPCET 2022 - 4th July Morning Shift
+1
-0

A car engine has a power of 20 kW. The car makes a roundtrip of 1 h. If the thermal efficiency of the engine is $$40 \%$$ and the ambient temperature is 300 K . The energy generated by fuel combustion is

A
180000 kJ
B
240000 kJ
C
360000 kJ
D
270000 kJ
2
AP EAPCET 2022 - 4th July Morning Shift
+1
-0

The number of vibrational degree of freedom of a diatomic molecule is

A
0
B
1
C
2
D
3
3
AP EAPCET 2021 - 20th August Morning Shift
+1
-0

Boiling water is changing into steam. The specific heat of boiling water is

A
zero
B
one
C
infinity
D
less than one
4
AP EAPCET 2021 - 20th August Morning Shift
+1
-0

If the volume of a block of metal changes by $$0.12 \%$$ when heated through $$20^{\circ} \mathrm{C}$$, then find its coefficient of linear expansion.

A
$$4 \times 10^{-5 \circ} \mathrm{C}^{-1}$$
B
$$4 \times 10^{-4 \circ} \mathrm{C}^{-1}$$
C
$$2 \times 0^{-5 \circ} \mathrm{C}^{-1}$$
D
$$2 \times 10^{-4 \circ} \mathrm{C}^{-1}$$
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