Heterogenous Mixture

Q.

Difference between :

(a) Pure and impure substances

(b) Homogeneous and heterogeneous substances

Q.

Is air a homogenous mixture or a heterogenous mixture?

Q. Milk is an example of colloidal solution, where fat is thephase and water is the medium.

1. dispersion
2. pure
3. dispersed
4. hidden

Q.

Give one example for each of the following types of mixtures.

(a) solid-solid homogeneous mixture

(b) solid-liquid heterogeneous mixture

(c) misicible liquids

(d) liquid-gas homogeneous mixture

Q. Paint is an example of __________ mixture.

1. Solid in liquid
2. Gas in liquid
3. Liquid in liquid
4. Solid in solid

Q.

Air is an example of ______________.

1. pure substance

2. element

3. homogeneous mixture

4. heterogeneous mixture

Q. Ice cream is an example of amixture.

1. homogeneous
2. heterogeneous
3. colloidal

Q.

Which of the following pass through the filter paper unchanged?

1. soil and water

2. common salt and water

3. both soil + water and common salt + water

4. none of these

Q.

Give an example of mixture of solid-liquid heterogeneous mixture.

Q.

Which of the following is a homogeneous mixture.

1. Iron fillings and sulphur

2. Muddy water

3. Air

4. Petrol and water

Q.

A substance made up of a single type of particles having the same chemical nature is:-

1. Pure substance

2. Impure substance

3. Homogeneous mixture

4. Heterogeneous mixture

Q. Which of the following is a mixture?

1. Sulphur powder
2. Salt
3. Iron rod
4. Iron particles & sand

Q.

A mixture contains iodine, ammonium chloride and sand. Only iodine and ammonium chloride are sublime. Only iodine dissolves in carbon tetrachloride. How will you separate the three components? The sequence of steps will be:

1. By sublimation and addition of ${\mathrm{CCl}}_4$

2. Addition of ${\mathrm{CCl}}_4$, filtration, sublimation

3. Sublimation, addition of ${\mathrm{H}}_2\mathrm{O}$, filtration

4. Evaporation, distillation, crystallization.

Q. Which of the following is a heterogeneous mixture?

1. Steel
2. Bronze
3. Soap
4. Soil

Q.

Ice cubes in cola could be classified as

1. Element

2. Homogeneous

3. Heterogeneous mixture

4. Compound

Q.

What are heterogeneous and homogeneous mixtures? Give examples.

Q. Give two examples of:-
1. Liquid element
2. Gaseous element
3. Solid element
4. Homogeneous mixture
5. Colloid
6. Organic compound
7. Complex compound
8. Inorganic compound
9. Metalloid
10. Element with valency 1
11. Element with valency 2

Q.

Classify the following into homogeneous and heterogeneous matter:

Alcohol

Q.

Difference between :

(a) Pure and impure substances

(b) Homogeneous and heterogeneous substances

Q.

Mixtures are either homogeneous or ___________

Q.

As the temperature of a solid mixture increases, one part of the mixture may melt while the other parts remain unchanged.

1. True

2. False

Q.

Classify the following into homogeneous and heterogeneous matter:

Common salt

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Identify each of the following as a homogeneous or heterogeneous mixture with a reason:
i) Soda water
ii) Air
iii) Fruit salad

Q.

Choose the most appropriate answer from the options given below :

(a) a mixture of sand and ammonium chloride can be separated by

(i) filtration

(ii) distillation

(iii) sublimation

(iv) crystallisation

(b) A pair of metalloids are

(i) Na and Mg

(ii) B and Si

(iii) C and P

(iv) He and Ar

(c) Which of the following property is not shown by compounds ?

(i) They are heterogeneous.

(ii) They are homogeneous.

(iii) They have definite molecular formulae.

(iv) They have fixed melting and boiling points.

(d) A solvent of Iodine is

(i) Water

(ii) Kerosene oil

(iii) Alcohol

(iv) Petrol

(e) Which of the gas is highly soluble in water ?

(i) Ammonia

(ii) Nitrogen

(iii) Carbon monoxide

(iv) Oxygen

Q. Which type of mixture is in uniform composition?​

Q. In which of the following the individual components present in it can be seen by naked eyes?

1. Compound
2. Homogeneous mixture
3. Elements
4. Heterogeneous mixture

Q.

Classify the substances listed as compounds and mixtures.

(i) saline water (ii) air (iii) distilled water (iv) milk (v) hydrated copper sulphate (vi) hydrogen chloride gas (vii) hydrochloric acid (viii) ammonia gas

Q.

Differentiate between homogeneous and heterogeneous mixtures with suitable examples.

Q. Differentiate between homogeneous mixtures and heterogeneous mixtures.

Q.

What are the different types of mixtures? List four examples of each.