General Science Class 7

What is produced when fuel is burned?

1. Carbon monoxide gas
2. Methane gas
3. Carbon dioxide gas
4. Helium gas

Which one among the following is a hydrocarbon compound?

1. Candle wax
2. Polyurethane
3. Glycerol
4. Aspirin

The substance that are added in the soil to make up any deficiency of nutrients are called?

1. Pesticides
2. Herbicides
3. Manure
4. Fertilizers

Fertilization are used to fill ___requirements of plants.

1. Water
2. Nutritional
3. Space
4. Light

Burning of wood is a ______ change.

1. Chemical
2. Physical
3. Temporary
4. Both A and B

Heat is a form of energy associated with:

1. Atomic Stability
2. Molecular Motion
3. Nuclear Reaction
4. Electromagnetic Radiation

Transfer of internal energy by collision of particles and movements of electrons within the body is called?

1. Conduction
2. Convection
3. Radiation
4. Insulation

In which mode heat transfer in solids?

1. Convection
2. Radiation
3. Conduction
4. None

Which among the following is a good conductor of heat?

1. Wood
2. Plastic
3. Paper
4. Copper

A mode of heat transfer that occurs by the mass motion of a fluid is called?

1. Radiation
2. Convection
3. Conduction
4. None