Which of these is a good conductor of heat?
A) Wood
B) Plastic
C) Metal
D) Air
Correct Answer: C) Metal
Why do we wear multiple layers of clothes in winter?
A) Air between layers is a good conductor
B) Air between layers is a bad conductor
C) Clothes are good conductors
D) Clothes are magnetic
Correct Answer: B) Air between layers is a bad conductor
The outer covering of electrical wires is made of plastic because:
A) It is cheap
B) It is colorful
C) It is a bad conductor of electricity
D) It is flexible
Correct Answer: C) It is a bad conductor of electricity
Pure water is:
A) Good conductor of electricity
B) Poor conductor of electricity
C) Insulator
D) Both B and C
Correct Answer: D) Both B and C
The spreading of scent in a room is an example of:
A) Evaporation
B) Diffusion
C) Condensation
D) Sublimation
Correct Answer: B) Diffusion
The metal cap in an electric cell represents:
A) Negative terminal
B) Positive terminal
C) Neutral terminal
D) None of these
Correct Answer: B) Positive terminal
Which part of a bulb produces light?
A) Glass cover
B) Metal base
C) Filament
D) Metal tip
Correct Answer: C) Filament
Matter is anything that:
A) Has weight only
B) Occupies space only
C) Has both weight and occupies space
D) Can be seen only
Correct Answer: C) Has both weight and occupies space
The state of matter that flows is:
A) Only liquid
B) Only gas
C) Both liquid and gas
D) Only solid
Correct Answer: C) Both liquid and gas
When blue ink is added to water, it spreads due to:
A) Conductivity
B) Diffusion
C) Magnetic property
D) Transparency
Correct Answer: B) Diffusion
Which of these is NOT a characteristic of solids?
A) Fixed shape
B) Fixed volume
C) Flow easily
D) Have weight
Correct Answer: C) Flow easily
The handles of cooking utensils are often made of:
A) Iron
B) Copper
C) Bakelite
D) Aluminum
Correct Answer: C) Bakelite
In an electric circuit, the direction of current is from:
A) Negative to positive
B) Positive to negative
C) Any direction
D) No fixed direction
Correct Answer: B) Positive to negative
Which state of matter can be compressed easily?
A) Solid
B) Liquid
C) Gas
D) All of these
Correct Answer: C) Gas
The process of changing from solid to liquid is called:
A) Evaporation
B) Condensation
C) Melting
D) Freezing
Correct Answer: C) Melting
Which of these is NOT a property of matter?
A) Solubility
B) Transparency
C) Color
D) Temperature
Correct Answer: D) Temperature
When salt dissolves in water, the salt is called:
A) Solvent
B) Solution
C) Solute
D) Mixture
Correct Answer: C) Solute
