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Question (21)

QN0013053

The term “natural dye” means a colour obtained from:

(A) Living plant sources
(B) Plastic sheets
(C) Factory paints
(D) Computer screens

Correct Answer: A

Explanation:

Natural dyes are obtained from natural sources like plants.

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Question (22)

QN0013054

A natural colour experiment with unequal paper sizes mainly affects:

(A) Fairness of comparison
(B) Plant growth
(C) Paper production
(D) Water absorption only

Correct Answer: A

Explanation:

Equal paper sizes are needed for fair comparison.

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Question (23)

QN0013055

Which natural ingredient is green in colour and can be tested in the activity?

(A) Spinach
(B) Beetroot
(C) Turmeric
(D) Henna only

Correct Answer: A

Explanation:

Spinach can be used as a green natural colour source.

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Question (24)

QN0013056

If a student wants to compare four colours scientifically, the student should change:

(A) The ingredient only
(B) The paper size every time
(C) The amount randomly
(D) All conditions

Correct Answer: A

Explanation:

Only the ingredient should be changed to make a fair test.

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Question (25)

QN0013057

Natural colours connect science with society because they can help in:

(A) Making useful coloured materials
(B) Increasing pollution
(C) Producing plastic waste
(D) Removing plants

Correct Answer: A

Explanation:

Natural dyes are useful for colouring materials.

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Question (26)

QN0013058

Which statement about natural dyes is correct?

(A) They are always made in factories
(B) They can come from plant parts
(C) They cannot colour anything
(D) They are made only from stones

Correct Answer: B

Explanation:

Natural dyes can be obtained from different plant parts.

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Question (27)

QN0013059

A student uses leaf, flower and root extracts to colour paper. This demonstrates:

(A) Different plant parts can provide dyes
(B) Only flowers have colours
(C) Roots cannot be useful
(D) Plants have no colours

Correct Answer: A

Explanation:

Leaves, flowers and roots can all provide natural dyes.

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Question (28)

QN0013060

If turmeric paper appears dull yellow, the observation relates to:

(A) Colour brightness
(B) Paper weight
(C) Paper length
(D) Paper source

Correct Answer: A

Explanation:

Brightness is an observation recorded during the experiment.

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Question (29)

QN0013061

The experiment asks students to use “any other natural ingredients” mainly to encourage:

(A) Creativity and exploration
(B) Use of artificial paints
(C) Wasting resources
(D) Avoiding observation

Correct Answer: A

Explanation:

Students are encouraged to explore more natural colour sources.

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Question (30)

QN0013062

Which action would make the experiment scientifically stronger?

(A) Keeping all conditions same except ingredient
(B) Changing paper size each time
(C) Guessing results
(D) Not recording observations

Correct Answer: A

Explanation:

Controlled conditions make experiments more reliable.

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Question (21)

The term “natural dye” means a colour obtained from:

Explanation:

Link:

Question (22)

A natural colour experiment with unequal paper sizes mainly affects:

Explanation:

Link:

Question (23)

Which natural ingredient is green in colour and can be tested in the activity?

Explanation:

Link:

Question (24)

If a student wants to compare four colours scientifically, the student should change:

Explanation:

Link:

Question (25)

Natural colours connect science with society because they can help in:

Explanation:

Link:

Question (26)

Which statement about natural dyes is correct?

Explanation:

Link:

Question (27)

A student uses leaf, flower and root extracts to colour paper. This demonstrates:

Explanation:

Link:

Question (28)

If turmeric paper appears dull yellow, the observation relates to:

Explanation:

Link:

Question (29)

The experiment asks students to use “any other natural ingredients” mainly to encourage:

Explanation:

Link:

Question (30)

Which action would make the experiment scientifically stronger?

Explanation:

Link:

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