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

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Question 1 of 17

Chemistry

1. Thermostat is an instrument which

Increases the temperature

Fluctuate the temperature

Maintains the temperature

Decreases the temperature

Question 1 of 17

Question 2 of 17

2. 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 2 of 17

Question 3 of 17

3. 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 and water do not mix

Chloroform and water have different, boiling points

Chloroform has a higher density than water

Question 3 of 17

Question 4 of 17

4. The intermolecular forces are of:

Four Types

Five Types

Two Types

Three Types

Question 4 of 17

Question 5 of 17

5. 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 5 of 17

Question 6 of 17

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

Newtonian (or Laminar flow)

Turbulent flow

None of these

Streamline flow

Question 6 of 17

Question 7 of 17

7. The unit of surface tension is

Newton per meter square

760mm of Hg

Newton per meter

Newton square per meter

Question 7 of 17

Question 8 of 17

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

Fluorine and Iodine

Chlorine and Bromine

Fluorine and Chlorine

Iodine and Bromine

Question 8 of 17

Question 9 of 17

9. 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

Re-crystallization

Filtration

Distillation

Question 9 of 17

Question 10 of 17

10. Van Der Wall’s forces are effective.

Independent of distance

At long distance

Both at long as well as short distance

Only at short distance

Question 10 of 17

Question 11 of 17

11. The distillation under reduced pressure is called

Steam distillation

Vacuum distillation

Pressure distillation

Fractional distillation

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

Filtration

Distillation

Chromatography

Freezing

Question 13 of 17

Question 14 of 17

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

Crystallization

Freezing

Condensation

Evaporation

Question 14 of 17

Question 15 of 17

15. 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

Dehydrate it with concentrated H₂SO₄

Burn it completely in oxygen

Measure its B P

Question 15 of 17

Question 16 of 17

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

Liquid crystals

Mesogens

Crystalline solid

Crystal lattice

Question 16 of 17

Question 17 of 17

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

Dispersion forces

Lon-dipole forces

Dipole-induced dipole forces

Dipole-dipole forces

Question 17 of 17

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