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

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Question 1 of 17

Chemistry

1. Crystal Lattice is an arrangement of particles in

One dimension

Four dimensions

Three dimensions

Two dimensions

Question 1 of 17

Question 2 of 17

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

Transition temperature

Melting Point

Eutectic temperature

Boiling point

Question 2 of 17

Question 3 of 17

3. 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 colourless liquid with the purple crystal unchanged

A Purple layer below a colourless layer

Question 3 of 17

Question 4 of 17

4. Lattice energy is also called

Ionization energy

Bond Energy

Crystal energy

Energy of affinity

Question 4 of 17

Question 5 of 17

5. 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

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

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

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

Crystals

Glasses

Amalgams

Question 6 of 17

Question 7 of 17

7. The spontaneous mixing of particles is called:

Evaporation

Diffusion

Sublimation

Boiling

Question 7 of 17

Question 8 of 17

8. 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

0.889 gm

1.111 gm

0.111 gm

Question 8 of 17

Question 9 of 17

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

Passing an electric current through the mixture

Fractional distillation of the mixture

Adding excess water to the mixture and filtering

Heating the mixture

Question 9 of 17

Question 10 of 17

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

Polymorphism

Allotropy

Isotropy

Isomorphism

Question 10 of 17

Question 11 of 17

11. 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

Heat the mixture and allow it to cool

Add aqueous Ag NO₃ to the mixture

Question 11 of 17

Question 12 of 17

12. 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

65 cm³

50 cm³

17 cm³

Question 12 of 17

Question 13 of 17

13. Iron acts as an electrical conductor due to

Electron cloud

Free ions

Free neutrons

Free protons

Question 13 of 17

Question 14 of 17

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

Densities

Mass numbers

Boiling point

Reactivities

Question 14 of 17

Question 15 of 17

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

Is sometimes absorbed and sometimes released

Is evolved

Has no effect

Is absorbed

Question 15 of 17

Question 16 of 17

16. The nature of bond in diamond is

Molecular

Ionic

Metallic

Covalent

Question 16 of 17

Question 17 of 17

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

Allotropy

Isomorphism

Polymorphism

Anisotropy

Question 17 of 17

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