Tag: chemistry

Questions Related to chemistry

Suspensions transmit light. True or false?

chemistry composition of matter heterogeneous mixture - suspension and its properties suspension types of mixture

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

Suspensions are "murky" or "opaque". They do not transmit light. Suspensions separate on standing. The mixture of particles can be separated by filtration.

A suspension of liquid droplets or fine solid particles in a gas is called :

chemistry nature of matter heterogeneous mixture - suspension and its properties suspension types of mixture

  1. aerosol

  2. particulate

  3. both a and b

  4. colloid

Show answer
Correct Option: C
Explanation:

A suspension of liquid droplets or fine solid particles in a gas is called an aerosol or particulate. In the atmosphere these consist of fine dust and soot particles, sea salt, biogenic and volcanogenic sulfates, nitrates, and cloud droplets.

Which of the following is an example of suspension?

chemistry nature of matter heterogeneous mixture - suspension and its properties suspension types of mixture

  1. Milk

  2. Water

  3. Sand in water

  4. All of the above

Show answer
Correct Option: C
Explanation:

A key characteristic of a suspension is that the solid particles will settle and separate over time if left alone. An example of a suspension is a mixture of water and sand. When mixed up, the sand will disperse throughout the water. If left alone, the sand will settle to the bottom.

Paste is:

chemistry nature of matter heterogeneous mixture - suspension and its properties suspension types of mixture

  1. suspension of solid in a liquid

  2. mechanical dispersion of a solid in liquid

  3. colloidal solution of a solid in solid

  4. none of the above

Show answer
Correct Option: A
Explanation:

Paste is suspension of solid in liquid.

Suspension is a : 

chemistry nature of matter heterogeneous mixture - suspension and its properties suspension types of mixture

  1. compound

  2. mixture of two or more substances

  3. have only single type of particle

  4. none of above

Show answer
Correct Option: B
Explanation:

Suspension is the heterogeneous mixture of two or more substances. In suspension, particles are suspended throughout in bulk and can be seen by naked eyes.

Why are suspensions not stable?

chemistry composition of matter heterogeneous mixture - suspension and its properties suspension types of mixture

  1. Particles are very small

  2. Particles settle at the bottom

  3. Particles do not settle

  4. Particles mix homogeneously

Show answer
Correct Option: B
Explanation:

When suspension is left for some time, particles get settled in bottom. Therefore, suspension is not stable.

Suspension shows Tyndall effect because of :

chemistry composition of matter heterogeneous mixture - suspension and its properties suspension types of mixture

  1. large size of particles

  2. small size of particles

  3. their  settling down nature

  4. none of above

Show answer
Correct Option: A
Explanation:

Suspension shows Tyndall effect because of their large size of particles. Particles of suspension are large enough to scatter rays of light and path of ray is visible through a suspension. 

Which of the following has liquid as a dispersing medium?

chemistry nature of matter heterogeneous mixture - suspension and its properties suspension types of mixture

  1. Aerosol

  2. Gel

  3. Foam

  4. Cranberry glass

Show answer
Correct Option: C
Explanation:

Mixtures are called foam when liquid is present as dispersing medium and gas is dispersed medium. For example, shaving cream, soap bubbles, etc.

A suspension of liquid droplets or fine solid particles in a gas is called as :

chemistry nature of matter heterogeneous mixture - suspension and its properties suspension types of mixture

  1. aerosol

  2. foam

  3. emulsion

  4. gel

Show answer
Correct Option: A
Explanation:

A suspension of liquid droplets or fine solid particles in a gas is called an aerosol or particulate. Aerosol is of two types: liquid aerosol and solid aerosol.

Which of the following is intermediate between suspension and solution?

chemistry composition of matter heterogeneous mixture - suspension and its properties suspension types of mixture

  1. Mixture

  2. Colloid

  3. Element

  4. Solvent

Show answer
Correct Option: B
Explanation:

Colloidal solutions are heterogeneous mixture of two or more substances. They appear homogeneous. The size of colloids is between the size of particles of solution and suspension, i.e., between 1 nanometer to 1000 nanometer.