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

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Question 1 of 17

Chemistry

1. 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 layer below a purple layer

A Purple layer below a colourless layer

A uniformly purple solution

A colourless liquid with the purple crystal unchanged

Question 1 of 17

Question 2 of 17

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

Place the mixture in a separating funnel

Add water to the mixture and filter

Add aqueous Ag NO₃ to the mixture

Heat the mixture and allow it to cool

Question 2 of 17

Question 3 of 17

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

Densities

Reactivities

Mass numbers

Boiling point

Question 3 of 17

Question 4 of 17

4. The spontaneous mixing of particles is called:

Boiling

Evaporation

Sublimation

Diffusion

Question 4 of 17

Question 5 of 17

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

Crystals

Alloys

Amalgams

Glasses

Question 5 of 17

Question 6 of 17

6. 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

50 cm³

65 cm³

17 cm³

Question 6 of 17

Question 7 of 17

7. Crystal Lattice is an arrangement of particles in

Four dimensions

Two dimensions

Three dimensions

One dimension

Question 7 of 17

Question 8 of 17

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

Is evolved

Is absorbed

Is sometimes absorbed and sometimes released

Has no effect

Question 8 of 17

Question 9 of 17

9. Lattice energy is also called

Crystal energy

Ionization energy

Energy of affinity

Bond Energy

Question 9 of 17

Question 10 of 17

10. The nature of bond in diamond is

Covalent

Ionic

Metallic

Molecular

Question 10 of 17

Question 11 of 17

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

Polymorphism

Isomorphism

Allotropy

Anisotropy

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?

1.889 gm

0.111 gm

1.111 gm

0.889 gm

Question 12 of 17

Question 13 of 17

13. 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 and distil off the sand

Heat the mixture gently and collect the substances which boil off

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

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

Question 13 of 17

Question 14 of 17

14. Iron acts as an electrical conductor due to

Free protons

Free neutrons

Electron cloud

Free ions

Question 14 of 17

Question 15 of 17

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

Isotropy

Allotropy

Isomorphism

Polymorphism

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.

Boiling point

Melting Point

Eutectic temperature

Transition temperature

Question 16 of 17

Question 17 of 17

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

Fractional distillation of the mixture

Passing an electric current through the mixture

Heating the mixture

Adding excess water to the mixture and filtering

Question 17 of 17

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