Question 1.
An ideal gas cannot be
A. Liquified
B. Solidified
C. Both A & B
D. None of the above
Ans: A. Liquified
Question 2.
Water will not be vapourised if
A. The temperature is 0°C
B. The humidity is 0%
C. The humidity is 100%
D. The temperature is 100°C
Ans: C. The humidity is 100%
Question 3.
Charles’s law is based on
A. Solid
B.Liquid
C. Gas
D. None of the above
Ans: C. Gas
Question 4.
The combined gas law relates which of the following?
A. Volume & Temperature
B. Temperature & Pressure
C. Volume & Pressure
D. Volume, Temperature & Pressure
Ans: D. Volume, Temperature & Pressure
Question 5.
Relative humidity is expressed as
A. Grams
B. Kilograms
C. Percentage
D. Ratio
Ans: C. Percentage
Question 6.
The ”Greenhouse effect’ is mainly due to increase in atmospheric
A. Ozone
B. Nitrogen
C. Sulphur dioxide
D. Carbon dioxide
Ans: D. Carbon dioxide
Question 7.
The primary agent of contact metamorphism is
A. Temperature
B. Pressure
C. Weathering
D. Flowing water
Ans: A. Temperature
Question 8.
The spring constant of a spring depends on its
A. Length only
B. Material only
C. Length and its diameter
D. Thickness, its diameter and its material
Ans: D. Thickness, its diameter and its material
Question 9.
According to special theory of relativity the mass of a particle
A. Increases with increase in velocity with respect to an observer.
B. Decreases with increase in velocity.
C. Decreases with decrease in velocity.
D. Is independent of its velocity.
Ans: A. Increases with increase in velocity with respect to an observer.
Question 10.
Thermohaline circulation is mainly due to
A. Cold, dense ocean water sinking and warmer water replacing it
B. Winds causing circulation of ocean water
C. Warmer, less dense water sinking in the ocean and cold water replacing it
D. Warm water being added to the ocean due to industial waste
Ans: A. Cold, dense ocean water sinking and warmer water replacing it
Question 11.
For accurate scientific work, temperatures are often measured by
A. Mercury thermometers
B. Alcohol thermometers
C. Platinum resistance thermometers
D. Thermoelectric thermometers
Ans: C. Platinum resistance thermometers
Question 12.
The average kinetic energy of the molecules of an ideal gas is directly proportional to
A. Velocity of Molecules
B. Mass of Molecules
C. Absolute temperature of the gas
D. Temperature of environment
Ans: C. Absolute temperature of the gas
Question 13.
Bolometer is used to measure
A. Frequency
B. Temperature
C. Velocity
D. Wavelength
Ans: B. Temperature
Question 14.
Which of the following device is used to measure humidity?
A. Hydrometer
B. Hygrometer
C. Psycho Meter
D. Anemometer
Ans: B. Hygrometer
Question 15.
In heating frozen foods in sealed pouches in a microwaves, why do you first poke holes in the pouch?
A. To prevent the steam pressure from bursting open the pouch
B. To allow the heat to get into the food through the hole
C. To allow the microwaves to get into the food through the holes
D. To allow the aroma of the food to come out through the holes
Ans: A. To prevent the steam pressure from bursting open the pouch
Question 16.
Steel is more elastic than rubber because it :
A. Requires larger deforming force
B. Is never deformed
C. Is deformed very easily
D. Is harder than rubber
Ans: C. Is deformed very easily
Question 17.
Boyle’s law relates to
A. Kinetic Theory of Gases
B. Viscosity of Liquids
C. Elasticity of Solids
D. Plasticity of Solids
Ans: A. Kinetic Theory of Gases
Question 18.
Which set of conditions represents the easiest way to liquify a gas ?
A. Low temperature and high pressure
B. High temperature and low pressure
C. Low temperature and low pressure
D. High temperature and high pressure
Ans: A. Low temperature and high pressure
Question 19.
When two ice cubes are pressed together, they join to form one cube. Which one of the following helps to hold them together?
A. Hydrogen bond formation
B. Vander waals forces
C. Covalent attraction
D. Dipole interaction
Ans: A. Hydrogen bond formation
Physics GK MCQs all set
- Physics MCQs Set-1
- Physics MCQs Set-2
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