Is Matter Around Us Pure Test

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Is Matter Around Us Pure Test - 60

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Weekly Quiz Competition

Question 1
1 / -0

Ink is the mixture of :

A
dye, water

B
dye, alcohol

C
dye, phenol

D
dye, benzene

Solution

When it is heated, water gets vaporized and coloured components are separated.
Hence, the correct option is $$A$$
Question 2
1 / -0

Ink is a _______ ?

A
Suspension

B
Colloidal solution

C
True solution

D
None of these

Solution

Ink solution is a colloid made out of very small solid particles in a continuous liquid medium known as a sol. Sols are quite stable and show the Tyndall effect. Examples include blood, pigmented ink, cell fluids, paint, antacids and mud. Hence, the correct option is $$B$$
Question 3
1 / -0

Separation of blood is done by ________.

A
centrifugation

B
distilliation

C
filteration

D
all of these

Solution

Blood is a collide in which particles like plasma, blood serums, ions, etc. are remain suspended. Hence, its components are separated from the liquid blood by centrifugation.
So, option A is correct.
Question 4
1 / -0

How can we obtain coloured component from blue/black ink?

A
Distillation

B
Filtration

C
Evaporation

D
None of these

Solution

Ink is a mixture of dye and water. Thus we can separate the volatile component(solvent) from its non-volatile solute by evaporation.
When the ink is heated on the watch glass for the separation of colored components from it, water gets evaporated from it leaving behind coloured components.
Question 5
1 / -0

What is disperse phase in ink?

A
Solid

B
Liquid

C
Gas

D
None of these

Solution

The phase that is scattered or present in the form of colloidal particles is called dispersed phase and the medium in which the colloidal particles are dispersed is called the dispersion medium.
Ink is colloidal mixture of dye and water. In which solid dye is disperse phase.
Question 6
1 / -0

During separation of the colored components from the ink if evaporation does not work , the other technique used is ___________.

A
Centrifugation

B
Filtration

C
Distillation

D
None of these

Solution

Centrifugation is the another technique used in the separation of heterogeneous colloidal substances. Ink particles are colloidal in nature. In centrifuge by the application of centripetal force the colored components of ink are get separated.
Question 7
1 / -0

Identify impure substance.

A
Fruit Juices

B
Sugar Solution

C
Alcohol in water

D
All of these

Solution

A impure substance is that which contain mixture of two or more kind of molecule. Fruit juice is the mixture of water, sugar and fruit pulp. Sugar solution is the mixture of sugar and water. Alcohol in water is also a mixture of water and alcohol.
Question 8
1 / -0

Colored components from the dye are separated by which of the following techniques?

A
Evaporation

B
Centrifugation

C
Paper chromatography

D
All of these

Solution

Evaporation, Centrifugation, and Paper Chromatography these all techniques that perform the separation of colored components from the ink. These are methods for analyzing mixtures by separating them into the chemicals from which they are made.
Question 9
1 / -0

Substance is the part of matter.Impure substances are commonly called as:

A
Compound

B
Element

C
Mixture

D
All of these

Solution

Matter is the fundamental entity which is further divided as substances and Mixtures. Impure substance contain random amount of constituent particles which is nothing but the mixture, which it self do not contain fixed amount of matter.
Question 10
1 / -0

Which of the following statement represents the fractional distillation process?

A
Using the boiling point as a guide when mixing one sample with another

B
Separating components from a mixture using heat

C
Purifying a sample that is contaminated with minerals

D
None of these

Solution

Fractional distillation is the separation of a mixture into its parts, or fractions, separating chemical compounds by their boiling point by heating them to a temperature at which one or more fractions of the compound will vaporize. It uses the boiling point as a guide while separating one sample from another.

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Is Matter Around Us Pure Test - 60

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Question 1

dye, water

dye, alcohol

dye, phenol

dye, benzene

Solution

Question 2

Suspension

Colloidal solution

True solution

None of these

Solution

Question 3

centrifugation

distilliation

filteration

all of these

Solution

Question 4

Distillation

Filtration

Evaporation

None of these

Solution

Question 5

Solid

Liquid

Gas

None of these

Solution

Question 6

Centrifugation

Filtration

Distillation

None of these

Solution

Question 7

Fruit Juices

Sugar Solution

Alcohol in water

All of these

Solution

Question 8

Evaporation

Centrifugation

Paper chromatography

All of these

Solution

Question 9

Compound

Element

Mixture

All of these

Solution

Question 10

Using the boiling point as a guide when mixing one sample with another

Separating components from a mixture using heat

Purifying a sample that is contaminated with minerals

None of these

Solution

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