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Question (1)

QN001241

Which of the following changes is generally considered desirable?

(A) Rusting of iron gate
(B) Spoiling of food
(C) Cooking food
(D) Pollution of water

Correct Answer: C

Explanation:

Cooking food makes it edible and useful.

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Question (2)

QN001242

A change that causes harm or loss is called

(A) reversible change
(B) desirable change
(C) undesirable change
(D) temporary change

Correct Answer: C

Explanation:

Undesirable changes cause damage or loss.

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Question (3)

QN001243

Which of the following is an undesirable change?

(A) Germination of seeds
(B) Ripening of fruits
(C) Milk turning sour
(D) Growth of plants

Correct Answer: C

Explanation:

Sour milk becomes unsuitable for normal consumption.

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Question (4)

QN001244

Why is rusting generally considered undesirable?

(A) It increases iron strength
(B) It forms a shiny layer
(C) It damages iron objects
(D) It cools metal surfaces

Correct Answer: C

Explanation:

Rust weakens iron objects over time.

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Question (5)

QN001245

Which process is desirable because it helps preserve food?

(A) Food spoilage
(B) Fermentation for curd formation
(C) Rusting of containers
(D) Burning of crops

Correct Answer: B

Explanation:

Fermentation helps in making useful food products.

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Question (6)

QN001246

Which statement correctly defines a desirable change?

(A) A change causing damage
(B) A change useful to humans
(C) A change producing smoke
(D) A change that cannot be reversed

Correct Answer: B

Explanation:

Desirable changes are beneficial and useful.

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Question (7)

QN001247

Which of the following changes is useful in agriculture?

(A) Soil erosion
(B) Seed germination
(C) Food decay
(D) Rusting tools

Correct Answer: B

Explanation:

Germination helps plants grow.

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Question (8)

QN001248

Which activity mainly prevents an undesirable change?

(A) Watering plants
(B) Painting iron gates
(C) Ripening fruits
(D) Cooking food

Correct Answer: B

Explanation:

Paint prevents rusting by blocking air and moisture.

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Question (9)

QN001249

Why is food spoilage considered undesirable?

(A) It improves taste
(B) It forms useful nutrients only
(C) It makes food unsafe to eat
(D) It increases freshness

Correct Answer: C

Explanation:

Spoiled food can cause illness.

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Question (10)

QN001250

Which of the following is a desirable physical change?

(A) Cutting vegetables for cooking
(B) Breaking water pipes
(C) Tearing currency notes
(D) Cracking glass windows

Correct Answer: A

Explanation:

Cutting vegetables helps in food preparation.

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Question (1)

Which of the following changes is generally considered desirable?

Explanation:

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Question (2)

A change that causes harm or loss is called

Explanation:

Link:

Question (3)

Which of the following is an undesirable change?

Explanation:

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Question (4)

Why is rusting generally considered undesirable?

Explanation:

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Question (5)

Which process is desirable because it helps preserve food?

Explanation:

Link:

Question (6)

Which statement correctly defines a desirable change?

Explanation:

Link:

Question (7)

Which of the following changes is useful in agriculture?

Explanation:

Link:

Question (8)

Which activity mainly prevents an undesirable change?

Explanation:

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Question (9)

Why is food spoilage considered undesirable?

Explanation:

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Question (10)

Which of the following is a desirable physical change?

Explanation:

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