RRB NTPC GS General Concepts of Chemistry Mock Test

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1. To neutralise 20 ml of M/10 sodium hydroxide, the volume of M/20 hydrochloric acid required isDeselect Answer

10 ml

15 ml

20 ml

40 ml

2. Oxidation involvesDeselect Answer

loss of electrons

gain of electrons

Both (a) and (b)

None of these

3. Deselect Answer

oxidising agent

reducing agent

both oxidising as well as reducing agent

catalyst

4. Mass of 0.1 mole of methane isDeselect Answer

1.6 g

0.1 g

1 g

16 g

5. Molarity is expressed asDeselect Answer

Gram/litre

Moles/litre

Litre/mole

Moles/1000gms

6. Deselect Answer

a

b

c

d

7. Deselect Answer

a

b

c

d

8. Equivalent weight of crystalline oxalic acid isDeselect Answer

45

90

126

63

9. Deselect Answer

(i) and (ii)

(ii) and (iii)

(iii) and (iv)

(i) and (iv)

10. Deselect Answer

oxidation

decomposition reaction

endothermic reaction

double displacement reaction

11. The molarity of a solution of Na2CO3 having 10.6g/500ml of solution isDeselect Answer

0.2 M

2 M

20 M

0.02 M

12. The percentage of oxygen in NaOH isDeselect Answer

40

60

8

10

13. A reducing agent is a substance which canDeselect Answer

accept electrons

donate electrons

accept protons

donate protons

14. Atomic weight of a trivalent element of equivalent weight 9 isDeselect Answer

9

27

18

36

15. Reduction involvesDeselect Answer

loss of electrons

addition of electrons

increasing in oxidation number

None of the above

16 out of 15

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RRB NTPC GS General Concepts of Chemistry Mock Test

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