Chemistry State of Matter (Liquids) Mcqs Test Online 11th Class Punjab

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Question 1 of 17

Chemistry

1. Which of these processes involve a weakening of the attraction between particles?

Condensation

Freezing

Crystallization

Evaporation

Question 1 of 17

Question 2 of 17

2. In which of the following are the particles the most disordered?

Impure water at 102°C

Water at 10°C

Water at 100°C

Steam at 100°C

Question 2 of 17

Question 3 of 17

3. To help diagnose illness, doctors often need to know which amino acids are present in blood or urine. Which method is common by used to separate and identify amino acids?

Chromatography

Distillation

Re-crystallization

Filtration

Question 3 of 17

Question 4 of 17

4. A flask contains the liquid chloroform and water. They are separating funnel, which conclusion can be form this observation alone.

Chloroform and water have different, boiling points

Chloroform and water do not mix

Chloroform and water have different relative molecular masses

Chloroform has a higher density than water

Question 4 of 17

Question 5 of 17

5. The intermediate phase lying between the solid phase and the normal liquid phase is called

Mesogens

Liquid crystals

Crystal lattice

Crystalline solid

Question 5 of 17

Question 6 of 17

6. The intermolecular forces are of:

Five Types

Two Types

Four Types

Three Types

Question 6 of 17

Question 7 of 17

7. Which of the following is the best method of obtaining water from ink?

Filtration

Chromatography

Distillation

Freezing

Question 7 of 17

Question 8 of 17

8. Thermostat is an instrument which

Maintains the temperature

Decreases the temperature

Increases the temperature

Fluctuate the temperature

Question 8 of 17

Question 9 of 17

9. The scientist who discussed the phenomenon of viscosity are.

Newton

Fritz

Vander Wall

Poisentille

Question 9 of 17

Question 10 of 17

10. Van Der Wall’s forces are effective.

Independent of distance

Both at long as well as short distance

Only at short distance

At long distance

Question 10 of 17

Question 11 of 17

11. The flow of the liquid where the velocity of layers is not too large is called:

Streamline flow

Turbulent flow

None of these

Newtonian (or Laminar flow)

Question 11 of 17

Question 12 of 17

12. The distillation under reduced pressure is called

Vacuum distillation

Fractional distillation

Steam distillation

Pressure distillation

Question 12 of 17

Question 13 of 17

13. The unit of surface tension is

Newton per meter square

Newton per meter

Newton square per meter

760mm of Hg

Question 13 of 17

Question 14 of 17

14. Which one of the following forces are also called London forces

Lon-dipole forces

Dipole-dipole forces

Dispersion forces

Dipole-induced dipole forces

Question 14 of 17

Question 15 of 17

15. Which of these statement best supports the idea that matter is made up of particles?

If a bottle of perfume is opened, the smell spread quickly

1 cm³ of water produces nearly 1700 cm³ of steam

Dehydrate it with concentrated

Liquids always ill the space available to them

Question 15 of 17

Question 16 of 17

16. A liquid is thought to be pure ethanoic acid (acetic acid), which of the following is the best way to test its purity?

React it with ethanol

Burn it completely in oxygen

Dehydrate it with concentrated H₂SO₄

Measure its B P

Question 16 of 17

Question 17 of 17

17. Which of the following two halogens are gases at room temperature.

Chlorine and Bromine

Iodine and Bromine

Fluorine and Iodine

Fluorine and Chlorine

Question 17 of 17

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