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

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Question 1 of 17

Chemistry

1. Van Der Wall’s forces are effective.

Only at short distance

Independent of distance

At long distance

Both at long as well as short distance

Question 1 of 17

Question 2 of 17

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

Chromatography

Freezing

Filtration

Distillation

Question 2 of 17

Question 3 of 17

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

Burn it completely in oxygen

Measure its B P

Dehydrate it with concentrated H₂SO₄

React it with ethanol

Question 3 of 17

Question 4 of 17

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

Impure water at 102°C

Steam at 100°C

Water at 100°C

Water at 10°C

Question 4 of 17

Question 5 of 17

5. 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?

Distillation

Filtration

Re-crystallization

Chromatography

Question 5 of 17

Question 6 of 17

6. Thermostat is an instrument which

Increases the temperature

Decreases the temperature

Fluctuate the temperature

Maintains the temperature

Question 6 of 17

Question 7 of 17

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

Liquids always ill the space available to them

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

Question 7 of 17

Question 8 of 17

8. The distillation under reduced pressure is called

Fractional distillation

Pressure distillation

Steam distillation

Vacuum distillation

Question 8 of 17

Question 9 of 17

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

Fluorine and Chlorine

Fluorine and Iodine

Chlorine and Bromine

Iodine and Bromine

Question 9 of 17

Question 10 of 17

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

Dipole-induced dipole forces

Lon-dipole forces

Dispersion forces

Dipole-dipole forces

Question 10 of 17

Question 11 of 17

11. 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 relative molecular masses

Chloroform has a higher density than water

Chloroform and water have different, boiling points

Chloroform and water do not mix

Question 11 of 17

Question 12 of 17

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

Fritz

Vander Wall

Newton

Poisentille

Question 12 of 17

Question 13 of 17

13. The unit of surface tension is

760mm of Hg

Newton per meter square

Newton square per meter

Newton per meter

Question 13 of 17

Question 14 of 17

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

Condensation

Crystallization

Evaporation

Freezing

Question 14 of 17

Question 15 of 17

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

Turbulent flow

None of these

Newtonian (or Laminar flow)

Streamline flow

Question 15 of 17

Question 16 of 17

16. The intermolecular forces are of:

Three Types

Five Types

Two Types

Four Types

Question 16 of 17

Question 17 of 17

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

Liquid crystals

Crystalline solid

Mesogens

Crystal lattice

Question 17 of 17

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