1.
Sea breeze occurs due to:
A
Radiation
B
Conduction
C
Convection
D
Evaporation
2.
Thermos flask reduces heat loss by:
A
Conduction only
B
Convection only
C
Radiation only
D
All three modes
3.
Geothermal energy is obtained from:
A
Sun
B
Wind
C
Earth’s interior
D
Water
4.
Heat transfer in solids mainly occurs by:
A
Convection
B
Radiation
C
Conduction
D
Evaporation
5.
Latent heat depends on:
A
Mass only
B
Material only
C
Mass and material
D
Temperature only
6.
Superconductors are mainly used in:
A
Electric heaters
B
Transformers
C
MRI machines
D
Electric bulbs
7.
Main source of energy for greenhouse effect is:
A
Earth’s core
B
Sun
C
Moon
D
Fossil fuels
8.
Anomalous expansion of water occurs between:
A
0°C to 4°C
B
4°C to 10°C
C
0°C to 10°C
D
10°C to 20°C
9.
Superconductivity is the phenomenon of:
A
Very high resistance
B
Zero electrical resistance
C
High temperature conduction
D
Magnetic insulation
10.
Pressure of gas decreases if:
A
Temperature increases
B
Volume decreases
C
Volume increases
D
Collisions increase
11.
Gas pressure is due to:
A
Weight of gas
B
Collisions of gas particles
C
Volume of gas
D
Temperature only
12.
Gas pressure is measured in SI unit:
A
Joule
B
Pascal
C
Watt
D
Kelvin
13.
Which surface reflects most heat?
A
Black
B
Rough
C
Shiny
D
Dark
14.
The SI unit of specific heat capacity is:
A
J/kg
B
J/°C
C
J/kg°C
D
W/m°C
15.
Latent heat is the heat required to:
A
Raise temperature
B
Change state without temperature change
C
Increase pressure
D
Expand volume
16.
Heat transfer in room heaters mainly occurs by:
A
Conduction
B
Radiation
C
Convection
D
Evaporation
17.
Which factor does NOT affect evaporation?
A
Surface area
B
Wind
C
Humidity
D
Mass of container
18.
Which state of matter has the strongest intermolecular forces?
A
Gas
B
Liquid
C
Solid
D
Plasma
19.
Superconductors show zero resistance below:
A
Room temperature
B
Boiling point
C
Critical temperature
D
Melting point
20.
Which factor mainly increases the kinetic energy of gas molecules?
A
Pressure
B
Volume
C
Temperature
D
Mass