Acids, Bases and Salts (NSO Level 1- Science Olympiad (SOF) Class 10): Questions 1 - 5 of 83

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Question number: 1

» Acids, Bases and Salts

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MCQ▾

Question

Which of the following is incorrect for acid?

Choices

Choice (4) Response

a.

Acid turns red litmus blue.

b.

All the compounds containing are acidic.

c.

All the acid have sour test.

d.

All the acids generates H-gas on reacting with metal

Question number: 2

» Acids, Bases and Salts

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MCQ▾

Question

Copper oxide in a beaker and add slowly while stirring,

The color of the solution is

Choices

Choice (4) Response

a.

Blue to green color

b.

Blue to greenish blue

c.

Blue to black color

d.

No change

Question number: 3

» Acids, Bases and Salts

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Assertion-Reason▾

Question

Assertion (Ꭺ)

Reason (Ꭱ)

The metal combines with remaining part of the acid and forms compounds called salt.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is true but Ꭱ is false

Question number: 4

» Acids, Bases and Salts

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MCQ▾

Question

The acidic solution was placed on a strip of paper. The color of the strip.

Choices

Choice (4) Response

a.

Turned green

b.

Turned red

c.

Turned light pink

d.

Did not change

Question number: 5

» Acids, Bases and Salts

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MCQ▾

Question

When is reacts with the resultant we get and , on passing through lime water we get the precipitate of

Find out that what is respectively?

Choices

Choice (4) Response

a.

b.

c.

d.

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