Science quiz class 9

Air is regarded as mixture because?

• It's pressure may vary.

• It's temperature may vary.

• Volume changes under different compositions.

• It's compositions may vary.

In which of the following constituents are present in the ratio?

• Mixture.

• Compound.

• Solution.

• Colloid.

Which of the following will result in the formation of a mixture?

• Crushing of marble tiles into smaller particles.

• Breaking ice cubes into smaller pieces.

• Adding sodium metal to water.

• Adding milk in water.

A sample contains two substances and has uniform properties. The sample is ________?

• A compound.

• A heterogeneous mixture.

• An element.

• A homogeneous mixture.

A mixture will appear translucent in the case of?

• Copper sulphate + water.

• Alum + water.

• Sugar + water.

• Starch + water.

Which of the following is not a mixture?

• Pure water.

• Sea water.

• Air.

• Brass.

Tags

NGSS.HS-ESS2-5

Which of the following is a heterogeneous mixture?

• Air.

• Brass.

• Iodised table salt.

• Steel.

Which of the following is an example of heterogeneous substance?

• Bottled water.

• Table salt.

• Pieces of copper.

• Candle.

Which of the following is an example of homogeneous substance?

• Granite.

• Copper sulphate.

• m&m candy.

• Muddy water.

Brass is an example of?

• Homogeneous compound.

• Homogeneous mixture.

• Heterogeneous mixture.

• Heterogeneous compound.