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Question (1)

QN00761

When blue litmus solution is added to diluted lemon juice, the colour becomes

(A) green
(B) blue
(C) red
(D) yellow

Correct Answer: C

Explanation:

Lemon juice is acidic and turns blue litmus red.

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Question (2)

QN00762

Lime water is added slowly to an acidic solution containing blue litmus solution. The final colour becomes

(A) red
(B) blue
(C) yellow
(D) orange

Correct Answer: B

Explanation:

Excess lime water makes the solution basic.

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Question (3)

QN00763

The change of colour from red to blue after adding lime water shows that the acid has been

(A) evaporated
(B) diluted
(C) neutralised
(D) frozen

Correct Answer: C

Explanation:

Lime water neutralises the acid.

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Question (4)

QN00764

When an acid reacts with a base in sufficient quantity, the resulting solution is generally

(A) acidic only
(B) basic only
(C) neither acidic nor basic
(D) salty only

Correct Answer: C

Explanation:

Neutralisation produces a neutral solution.

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Question (5)

QN00765

Reactions in which acids and bases cancel each other’s effect are called

(A) oxidation reactions
(B) displacement reactions
(C) neutralisation reactions
(D) evaporation reactions

Correct Answer: C

Explanation:

Such reactions are called neutralisation reactions.

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Question (6)

QN00766

In a neutralisation reaction, heat is generally

(A) absorbed
(B) released
(C) destroyed
(D) converted into sound only

Correct Answer: B

Explanation:

Heat is evolved during neutralisation.

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Question (7)

QN00767

Which of the following is formed during neutralisation?

(A) Sugar and oxygen
(B) Salt and water
(C) Acid and salt
(D) Base and oxygen

Correct Answer: B

Explanation:

Neutralisation forms salt and water.

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Question (8)

QN00768

Which equation correctly represents neutralisation?

(A) Acid + Acid → Salt
(B) Base + Base → Water
(C) Acid + Base → Salt + Water + Heat
(D) Salt + Water → Acid + Base

Correct Answer: C

Explanation:

Neutralisation produces salt, water and heat.

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Question (9)

QN00769

Lemon juice is acidic while lime water is basic. Mixing both in proper quantity results in

(A) only acid remaining
(B) only base remaining
(C) neutralisation
(D) formation of gas only

Correct Answer: C

Explanation:

Acid and base neutralise each other.

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Question (10)

QN00770

A student adds excess lime water to lemon juice solution. The final solution will most likely be

(A) acidic
(B) basic
(C) neutral only
(D) colourless only

Correct Answer: B

Explanation:

Excess base makes the solution basic.

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Question (1)

When blue litmus solution is added to diluted lemon juice, the colour becomes

Explanation:

Link:

Question (2)

Lime water is added slowly to an acidic solution containing blue litmus solution. The final colour becomes

Explanation:

Link:

Question (3)

The change of colour from red to blue after adding lime water shows that the acid has been

Explanation:

Link:

Question (4)

When an acid reacts with a base in sufficient quantity, the resulting solution is generally

Explanation:

Link:

Question (5)

Reactions in which acids and bases cancel each other’s effect are called

Explanation:

Link:

Question (6)

In a neutralisation reaction, heat is generally

Explanation:

Link:

Question (7)

Which of the following is formed during neutralisation?

Explanation:

Link:

Question (8)

Which equation correctly represents neutralisation?

Explanation:

Link:

Question (9)

Lemon juice is acidic while lime water is basic. Mixing both in proper quantity results in

Explanation:

Link:

Question (10)

A student adds excess lime water to lemon juice solution. The final solution will most likely be

Explanation:

Link:

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