Foundation level III NEET Mock Test 9 chemistry 2024-2025

What is combustion?

• Process of heating

• Process of burning

• Process of cooling

• Process of dissolving

Which of the following is not a condition for combustion to occur?

• Presence of oxygen

• Presence of fuel

• Presence of heat

• Presence of water

Which gas is released during combustion?

• Carbon dioxide

• Nitrogen

• Oxygen

• Hydrogen

Which of the following substances is a fuel?

• Water

• Oxygen

• Wood

• Carbon dioxide

Which of the following is not an example of combustion?

• A burning candle

• Rusting of iron

• A fire in a fireplace

• A matchstick burning

What is the product of complete combustion of hydrocarbons?

• Carbon dioxide and water

• Carbon monoxide and water

• Carbon dioxide and oxygen

• Oxygen and water

What is the fuel in the combustion of natural gas?

• Methane

• Methane

• Propane

• Ethanol

Which of the following is an example of non-combustible material?

• Paper

• Wood

• Iron

• Petrol

What is the flame produced by the burning of a substance called?

• Fire

• Spark

• Flame

• Heat

Which part of the flame is the hottest?

• Inner core

• Outer core

• Blue zone

• Yellow zone