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Question (11)

QN00811

Before releasing acidic industrial waste into lakes, factories should

(A) freeze the waste
(B) heat the waste strongly
(C) neutralise the waste using bases
(D) mix sugar in the waste

Correct Answer: C

Explanation:

Bases neutralise acidic waste.

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Question (12)

QN00812

Which of the following is an example of neutralisation in agriculture?

(A) Adding lime to acidic soil
(B) Boiling water for drinking
(C) Drying grains in sunlight
(D) Storing seeds in bags

Correct Answer: A

Explanation:

Lime neutralises soil acidity.

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Question (13)

QN00813

Which daily-life problem can be managed by neutralisation?

(A) Ant bite
(B) Acidic soil
(C) Industrial waste
(D) All of these

Correct Answer: D

Explanation:

Neutralisation helps in all these situations.

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Question (14)

QN00814

When a base is added to acidic soil, the purpose is to

(A) increase acidity
(B) neutralise excess acid
(C) dry the soil
(D) remove nutrients

Correct Answer: B

Explanation:

Bases reduce soil acidity.

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Question (15)

QN00815

Fish in a lake are affected when untreated acidic waste changes the

(A) colour of fish only
(B) smell of air only
(C) nature of water
(D) size of rocks only

Correct Answer: C

Explanation:

Acidic waste changes water quality.

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Question (16)

QN00816

A gardener adds too much lime to soil. The soil may become

(A) acidic
(B) basic
(C) neutral always
(D) frozen

Correct Answer: B

Explanation:

Excess lime increases basicity.

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Question (17)

QN00817

Which statement is correct about compost added to basic soil?

(A) It increases basicity
(B) It releases acids slowly
(C) It turns soil metallic
(D) It removes all nutrients

Correct Answer: B

Explanation:

Compost helps neutralise bases.

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Question (18)

QN00818

Which acid is injected by red ants during a bite?

(A) Citric acid
(B) Acetic acid
(C) Formic acid
(D) Tartaric acid

Correct Answer: C

Explanation:

Ant bites contain formic acid.

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Question (19)

QN00819

A student accidentally applies lemon juice on an ant bite. The stinging may increase because lemon juice is

(A) basic
(B) acidic
(C) neutral
(D) salty

Correct Answer: B

Explanation:

Lemon juice is acidic.

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Question (20)

QN00820

Which treatment is most suitable for acidic industrial waste?

(A) Add more acid
(B) Add basic substances
(C) Add sugar solution
(D) Filter with cloth only

Correct Answer: B

Explanation:

Bases neutralise acidic waste.

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Question (11)

Before releasing acidic industrial waste into lakes, factories should

Explanation:

Link:

Question (12)

Which of the following is an example of neutralisation in agriculture?

Explanation:

Link:

Question (13)

Which daily-life problem can be managed by neutralisation?

Explanation:

Link:

Question (14)

When a base is added to acidic soil, the purpose is to

Explanation:

Link:

Question (15)

Fish in a lake are affected when untreated acidic waste changes the

Explanation:

Link:

Question (16)

A gardener adds too much lime to soil. The soil may become

Explanation:

Link:

Question (17)

Which statement is correct about compost added to basic soil?

Explanation:

Link:

Question (18)

Which acid is injected by red ants during a bite?

Explanation:

Link:

Question (19)

A student accidentally applies lemon juice on an ant bite. The stinging may increase because lemon juice is

Explanation:

Link:

Question (20)

Which treatment is most suitable for acidic industrial waste?

Explanation:

Link:

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