NSO Level 1- Science Olympiad (SOF) Class 10: Questions 877 - 880 of 986

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Question number: 877

» Chemical Reactions and Equation

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MCQ▾

Question

Which of the following is not a chemical reaction?

Choices

Choice (4) Response

a.

Combustion (burning) of wood

b.

Dissolution of sugar in water

c.

Rusting of iron

d.

Metabolism of food in the body

Question number: 878

» Chemical Reactions and Equation

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MCQ▾

Question

Consider the following table:

Table shown the reactivity series

The reactivity series observation is showing in table.

From the above data, the decreasing order of reactivity of metal is

Choices

Choice (4) Response

a.

Al > Cu > Fe

b.

Fe > Al > Cu

c.

Al > Fe > Cu

d.

Question does not provide sufficient data or is vague

Question number: 879

» Acids, Bases and Salts

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MCQ▾

Question

Acetic acid was added to Sodium bicarbonates kept in a test tube. A colorless gas was evolved. It was concluded that

Choices

Choice (4) Response

a.

Acetic acid and Sodium bicarbonates evolved water

b.

Acetic acid and Sodium bicarbonates reacts to liberate gas

c.

All of the above

d.

Question does not provide sufficient data or is vague

Question number: 880

» Acids, Bases and Salts

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MCQ▾

Question

of a solution of is found to be completely neutralized by of a given solution of . If we take of the same solution of the amount Solution (the same solution as before) required to neutralize it will be

Choices

Choice (4) Response

a.

10

b.

17

c.

22

d.

20