Heterogenous Mixture

Q. What is supernatant liquid?

Q.

A homogeneous mixture and its components can be separated by the technique known as centrifugation.

1. True

2. False

Q.

Oil and water form a heterogeneous mixture. Why?

Q.

Blood is a _________ mixture.

Q.

What is condensation? What are its types?

Q.

Dyes in water-soluble markers may be separated by means of

1. Distillation

2. Evaporation

3. Chromatography

4. Sublimation

Q.

How are mixtures classified on the basis of the distribution of their constituent particles?

Q.

A mixture of mustard oil and water forms a :

1. alloy

2. homogeneous mixture

3. compound

4. heterogeneous mixture

Q.

illustrate the different types of mixtures with an experiment.

Q. __________ being a suspension, must be shaken well before use.

1. Lemonade
2. Cough syrup
3. Saline water
4. Sugar syrup

Q. Centrifugation is used for separating heterogeneous mixtures.

1. True
2. False

Q. Which of these is a reversible change?
(a) milk turning into curd
(b) burning of wax
(c) melting of wax
(d) rusting of iron

Q.

Which of the following statement/s describe the solution?

STATEMENT 1: A solution is a homogenous mixture of two or more substances.

STATEMENT 2: Brass is a solid-solid mixture.

STATEMENT 3: Solutions are mixtures of different molecules that are evenly distributed.

STATEMENT 4: Lemonade is an example of a solution.

1. Only statement 1 is true.

2. Only statement 2 is true.

3. Both statements 3 and 4 are true.

4. All are correct.

Q.

Which of the following is true in the case of an ice cream?

1. It is a compound

2. It is a heterogeneous mixture

3. It is a homogeneous mixture

4. It is a pure substance

Q. Is changing of milk into curd a reversible change?

Q. Air has________ composition with________ oxygen at high attitudes.

1. fixed, less
2. variable, more
3. variable, less
4. fixed, more

Q.

What process is used for separating heterogeneous mixtures of insoluble solid-in-liquid?

1. Filtration

2. Crystallization

3. Sublimation

4. Centrifugation

Q. a) Differentiate between homogeneous and heterogeneous mixture? [2 Marks]
b) Identify each of the following as a homogeneous or heterogeneous mixture with a reason:
i) Soda water [1 Mark]
ii) Soil [1 Mark]
iii) Fruit salad [1 Mark]

Q. The gas which turns lime water milky is
(a) oxygen
(b) nitrogen
(c) carbon dioxide
(d) none of these

Q. In _____ mixtures particles are larger than the atomic or the molecular level.

1. none of above
2. heterogeneous
3. solution
4. homogeneous