Inflamable

The video tutorial explains the different states of matter: solid, liquid, and gas. It highlights examples of carbon-rich solid fuels such as wood, flammable alkali metals like lithium, and flammable liquids and gases such as ethanol and hydrogen.

Which of the following is an example of a carbon-rich solid fuel?

• Hydrogen

• Lithium

• Wood

• Ethanol

What is a characteristic of alkali metals like lithium?

• They are gaseous at room temperature

• They are liquid at room temperature

• They are highly flammable

• They are non-flammable

Which of the following is a flammable liquid?

• Ethanol

• Hydrogen

• Wood

• Lithium

Hydrogen is an example of which type of flammable substance?

• Gas

• Liquid

• Metal

• Solid

Which of the following is NOT mentioned as a flammable substance in the video?

• Ethanol

• Water

• Wood

• Lithium