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

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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?

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

Heat the mixture gently and collect the substances which boil off

Shake the mixture with water and distil off the sand

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

Question 1 of 17

Question 2 of 17

2. Crystal Lattice is an arrangement of particles in

One dimension

Four dimensions

Two dimensions

Three dimensions

Question 2 of 17

Question 3 of 17

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

Reactivities

Mass numbers

Boiling point

Densities

Question 3 of 17

Question 4 of 17

4. Lattice energy is also called

Ionization energy

Crystal energy

Bond Energy

Energy of affinity

Question 4 of 17

Question 5 of 17

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

15 cm³

17 cm³

65 cm³

50 cm³

Question 5 of 17

Question 6 of 17

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

Alloys

Glasses

Amalgams

Crystals

Question 6 of 17

Question 7 of 17

7. The spontaneous mixing of particles is called:

Diffusion

Sublimation

Boiling

Evaporation

Question 7 of 17

Question 8 of 17

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

Fractional distillation of the mixture

Adding excess water to the mixture and filtering

Heating the mixture

Passing an electric current through the mixture

Question 8 of 17

Question 9 of 17

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

Allotropy

Isomorphism

Anisotropy

Polymorphism

Question 9 of 17

Question 10 of 17

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

Heat the mixture and allow it to cool

Add water to the mixture and filter

Place the mixture in a separating funnel

Add aqueous Ag NO₃ to the mixture

Question 10 of 17

Question 11 of 17

11. 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 colourless liquid with the purple crystal unchanged

A uniformly purple solution

A Purple layer below a colourless layer

A colourless layer below a purple layer

Question 11 of 17

Question 12 of 17

12. 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?

0.889 gm

0.111 gm

1.889 gm

1.111 gm

Question 12 of 17

Question 13 of 17

13. Iron acts as an electrical conductor due to

Free ions

Electron cloud

Free protons

Free neutrons

Question 13 of 17

Question 14 of 17

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

Is absorbed

Is sometimes absorbed and sometimes released

Is evolved

Has no effect

Question 14 of 17

Question 15 of 17

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

Polymorphism

Isotropy

Allotropy

Isomorphism

Question 15 of 17

Question 16 of 17

16. The nature of bond in diamond is

Metallic

Ionic

Molecular

Covalent

Question 16 of 17

Question 17 of 17

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

Eutectic temperature

Boiling point

Melting Point

Transition temperature

Question 17 of 17

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