ctet Science for Paper-II (Practice Paper 03)

Science for Paper-

1. Balanced diet should have

(a) Protein 2/5, fat 3/5, carbohydrate 1/5

(b) Protein 3/5, fat 1/5, carbohydrate 2/5

(c) Protein 1/5, fat 1/5, carbohydrate 3/5

(d) Protein 1/2, fat ¾, carbohydrate 1/4

2. Which of the following statements about a balanced chemical equation is not true?

(a) Mass is conserved only

(b) Atoms are conserved only

(c) Molecules are conserved only

(d) All of these

3. Atomic theory was given by

(a) John Dalton

(b) Neils Bohr

(c) E. Rutherford

(d) J.J Thomson

4. If we open a bottle of perfume, its smell spreads in the entire room within a short time

due to the process of

(a) Evaporation

(b) Sublimation

(c) Diffusion

(d) Solution

5. Which out of the following is a heterogeneous mixture?

(a) Milk

(b) Soil

(c) Smoke

(d) All of these

6. Carbon dioxide is a compound because:

(a) It exists as solid liquid and gas.

(b) It contains hydrogen and oxygen.

(c) It contains two different elements joined by chemical bonds.

(d) It can be split up into simpler substance by chemical means

7. Which of the following is neither an element nor a compound?

(a) Saline water

(b) Carbon dioxide

(c) Mercury

(d) Sodium chloride

8. Atomicity of Aluminium is

(a) 1

(b) 2

(c) 3

(d) 4

9. The chemical formula of a compound containing 2 atom of hydrogen and 1 atom of

sulphur is

(a) H2SO4

(b) SO2

(c) H2S

(d) H2O

10. When magnesium is burnt in air. It produces magnesium oxide. The correct chemical

reaction is:

(a) Mg +O2 ®MgO

(b) 2 2Mg +O ®2MgO

(c) 2Mg + 2O®2MgO

(d) 2 Mg2 +O ®2MgO

ANSWERS
1. (c)

2. (d)

3. (a)

4. (c)

5. (d)

6. (c)

7. (a)

8. (a)

9. (c)

10. (b)

Comments

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