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

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Question 1 of 17

Chemistry

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

1 cm³ of water produces nearly 1700 cm³ of steam

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

Liquids always ill the space available to them

Dehydrate it with concentrated

Question 1 of 17

Question 2 of 17

2. Van Der Wall’s forces are effective.

At long distance

Independent of distance

Both at long as well as short distance

Only at short distance

Question 2 of 17

Question 3 of 17

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

Dispersion forces

Dipole-dipole forces

Lon-dipole forces

Dipole-induced dipole forces

Question 3 of 17

Question 4 of 17

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

Fluorine and Iodine

Chlorine and Bromine

Iodine and Bromine

Fluorine and Chlorine

Question 4 of 17

Question 5 of 17

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

Turbulent flow

Streamline flow

Newtonian (or Laminar flow)

None of these

Question 5 of 17

Question 6 of 17

6. Thermostat is an instrument which

Maintains the temperature

Increases the temperature

Decreases the temperature

Fluctuate the temperature

Question 6 of 17

Question 7 of 17

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

Distillation

Freezing

Chromatography

Filtration

Question 7 of 17

Question 8 of 17

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

Newton

Fritz

Vander Wall

Poisentille

Question 8 of 17

Question 9 of 17

9. The intermolecular forces are of:

Five Types

Two Types

Four Types

Three Types

Question 9 of 17

Question 10 of 17

10. 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?

Filtration

Re-crystallization

Distillation

Chromatography

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 do not mix

Chloroform and water have different relative molecular masses

Chloroform and water have different, boiling points

Chloroform has a higher density than water

Question 11 of 17

Question 12 of 17

12. The unit of surface tension is

Newton per meter

760mm of Hg

Newton per meter square

Newton square per meter

Question 12 of 17

Question 13 of 17

13. The distillation under reduced pressure is called

Pressure distillation

Vacuum distillation

Steam distillation

Fractional distillation

Question 13 of 17

Question 14 of 17

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

Water at 100°C

Steam at 100°C

Impure water at 102°C

Water at 10°C

Question 14 of 17

Question 15 of 17

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

Mesogens

Crystal lattice

Liquid crystals

Crystalline solid

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?

Measure its B P

Burn it completely in oxygen

React it with ethanol

Dehydrate it with concentrated H₂SO₄

Question 16 of 17

Question 17 of 17

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

Condensation

Crystallization

Evaporation

Freezing

Question 17 of 17

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