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The following question based on light, heat, thermodynamics, wave motion, sound, optics & oscillations topic of general science mcq
List I | List II |
A. The coefficient of volume expansion at constant pressure | 1. Decrease in pressure |
B. At constant temperature, an increase in volume results in | 2. At all temperature |
C. An ideal gas obeys Boyle’s and Charle’s law | 3. Same for all gases |
D. A real gas behaves as an ideal gas at low pressure | 4. At high temperature |
(a) A – 3, B – 1, C – 2, D – 4
(b) A – 2, B – 3, C – 4, D – 1
(c) A – 2, B – 1, C – 3, D – 4
(d) A – 3, B – 4, C – 1, D – 2
The correct answers to the above question in:
Answer: (a)
(A) → 3 Cv = $1/{273}$ °C same for all gases
(B) → 1 PV = cos A ⇒ P ∝ $1/V$
(C) → 2 Ideal gas obeys gas law at each range of temperature.
(D) → 4 At high temperature, intermolecular forces become zero and so real gas behaves like an ideal gas.
Discuss Form
Read more light heat thermodynamics wave sound optics oscillation Based General Science Questions and Answers
Question : 1
Which of the following statements is/ are false about mode of heat transfer?
- In radiation, heat is transfered from one medium to another without affecting the intervening medium
- Radiation and convection are possible in vaccum while conduction requires material medium.
- Conduction is possible in solids while convection occurs in liquids and gases.
a) II only
b) I only
c) II and III
d) I, II and III
Answer »Answer: (a)
Question : 2
In the season of summer, we experience a humid heat when weather
a) Middle of summer
b) Scorching weather
c) Start of summer
d) Humid weather
Answer »Answer: (d)
Question : 3
Sound moves with higher velocity if
a) temperature of the medium is increased
b) pressure of the medium is decreased
c) humidity of the medium is increased
d) Both (a) and (c) above
Answer »Answer: (d)
Question : 4
The normal temperature of human body is 98.4°F. It’s equivalent temperature (in °C) is
a) 36.89
b) 35.72
c) 40.16
d) 32.36
Answer »Answer: (a)
Question : 5
The wavelength of radiation emitted by a body depends upon
a) the temperature of its surface
b) the nature of its surface
c) the area of its surface
d) All of the above
Answer »Answer: (d)
Question : 6
At a given temperature the internal energy of a substance
a) in liquid state is more than that in gaseous state
b) in liquid state is equal to that in gaseous state
c) in liquid state is less than that in gaseous state
d) is equal for the three states of matter
Answer »Answer: (c)
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