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

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Question 1 of 17

Chemistry

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

Newton

Vander Wall

Fritz

Poisentille

Question 1 of 17

Question 2 of 17

2. 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

Dehydrate it with concentrated

Liquids always ill the space available to them

Question 2 of 17

Question 3 of 17

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

Condensation

Freezing

Evaporation

Crystallization

Question 3 of 17

Question 4 of 17

4. The intermolecular forces are of:

Three Types

Five Types

Four Types

Two Types

Question 4 of 17

Question 5 of 17

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

Steam at 100°C

Impure water at 102°C

Water at 10°C

Water at 100°C

Question 5 of 17

Question 6 of 17

6. 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?

Re-crystallization

Distillation

Filtration

Chromatography

Question 6 of 17

Question 7 of 17

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

Crystal lattice

Mesogens

Crystalline solid

Liquid crystals

Question 7 of 17

Question 8 of 17

8. 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 8 of 17

Question 9 of 17

9. Thermostat is an instrument which

Increases the temperature

Decreases the temperature

Fluctuate the temperature

Maintains the temperature

Question 9 of 17

Question 10 of 17

10. The distillation under reduced pressure is called

Steam distillation

Fractional distillation

Vacuum distillation

Pressure distillation

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

Newtonian (or Laminar flow)

Turbulent flow

None of these

Question 11 of 17

Question 12 of 17

12. The unit of surface tension is

760mm of Hg

Newton per meter square

Newton square per meter

Newton per meter

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 one of the following forces are also called London forces

Dipole-dipole forces

Dipole-induced dipole forces

Lon-dipole forces

Dispersion forces

Question 14 of 17

Question 15 of 17

15. Van Der Wall’s forces are effective.

Only at short distance

Independent of distance

Both at long as well as short distance

At long distance

Question 15 of 17

Question 16 of 17

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

Chlorine and Bromine

Iodine and Bromine

Fluorine and Chlorine

Fluorine and Iodine

Question 16 of 17

Question 17 of 17

17. 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 has a higher density than water

Chloroform and water have different, boiling points

Chloroform and water have different relative molecular masses

Question 17 of 17

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