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

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

Question 1 of 17

Chemistry

1. Which of the following method is most suitable for obtaining a pure, dry sample of NaCl from a mixture of NaCl and sand?

Heat the mixture gently and collect the substances which boil off

Shake the mixture with water. Filter and dry the substances on the filter paper.

Shake the mixture with water. Filter and evaporate the filtrate.

Shake the mixture with water and distil off the sand

Question 1 of 17

Question 2 of 17

2. The solids in which atoms, ions or molecules have random non-repetitive three dimensional arrangements are termed as:

Glasses

Amalgams

Alloys

Crystals

Question 2 of 17

Question 3 of 17

3. The results of the accurate weighing of some crystals are as follows:
Mass of weighing bottle empty = 25.652 gm
Mass of weighing bottle + crystals = 26.541 gm
What is the mass of the crystals?

1.111 gm

0.889 gm

1.889 gm

0.111 gm

Question 3 of 17

Question 4 of 17

4. Electric current can pass through graphite in one direction but not through other direction of crystal such a property is called

Polymorphism

Anisotropy

Allotropy

Isomorphism

Question 4 of 17

Question 5 of 17

5. A bottle of copper oxide has been contaminated with some sodium chloride. How can the NaCl be removed from the copper oxide?

Add aqueous Ag NO₃ to the mixture

Add water to the mixture and filter

Place the mixture in a separating funnel

Heat the mixture and allow it to cool

Question 5 of 17

Question 6 of 17

6. When gaseous ions are allowed to form a crystal, energy

Has no effect

Is evolved

Is sometimes absorbed and sometimes released

Is absorbed

Question 6 of 17

Question 7 of 17

7. Lead and zinc can be separated by distillation because they have different.

Mass numbers

Reactivities

Boiling point

Densities

Question 7 of 17

Question 8 of 17

8. NaF and MgO have both atomic ration 1:1 in their crystals such property is

Isomorphism

Polymorphism

Isotropy

Allotropy

Question 8 of 17

Question 9 of 17

9. Crystal Lattice is an arrangement of particles in

Three dimensions

Two dimensions

One dimension

Four dimensions

Question 9 of 17

Question 10 of 17

10. What method could be used to obtain copper from mixture of pondered copper and sodium chloride?

Adding excess water to the mixture and filtering

Fractional distillation of the mixture

Passing an electric current through the mixture

Heating the mixture

Question 10 of 17

Question 11 of 17

11. Lattice energy is also called

Energy of affinity

Ionization energy

Bond Energy

Crystal energy

Question 11 of 17

Question 12 of 17

12. The nature of bond in diamond is

Ionic

Molecular

Covalent

Metallic

Question 12 of 17

Question 13 of 17

13. The spontaneous mixing of particles is called:

Diffusion

Evaporation

Boiling

Sublimation

Question 13 of 17

Question 14 of 17

14. A crystal of the purple compound Potassium Permanganate placed at the bottom of a beaker of water and the beaker left until there is no further change. What will be observed?

A uniformly purple solution

A colourless layer below a purple layer

A Purple layer below a colourless layer

A colourless liquid with the purple crystal unchanged

Question 14 of 17

Question 15 of 17

15. Iron acts as an electrical conductor due to

Free neutrons

Free ions

Electron cloud

Free protons

Question 15 of 17

Question 16 of 17

16. The temperature at which two or more than two types of crystals exist in equilibrium is called.

Eutectic temperature

Melting Point

Boiling point

Transition temperature

Question 16 of 17

Question 17 of 17

17. An insoluble solid was dropped into a measuring cylinder containing 50 cm³ of water. What will be the effect on volume of water?

65 cm³

17 cm³

50 cm³

15 cm³

Question 17 of 17

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