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Question (1)

QN0019193

Which images look similar when both width and height change by the same factor?

(A) Distorted images
(B) Similar images
(C) Rotated images
(D) Reflected images

Correct Answer: B

Explanation:

Images remain similar when width and height change by the same factor.

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Question (2)

QN0019194

In proportional change, both dimensions must change by the same ______.

(A) Difference
(B) Sum
(C) Factor
(D) Product

Correct Answer: C

Explanation:

Proportional change depends on the same multiplication factor.

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Question (3)

QN0019195

An image has dimensions 80 mm × 40 mm. If both dimensions are halved, the new image is:

(A) Distorted
(B) Similar to original
(C) Square
(D) Enlarged

Correct Answer: B

Explanation:

Halving both dimensions preserves similarity.

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Question (4)

QN0019196

The ratio of width to height of a rectangle 75 mm × 50 mm is:

(A) 5 : 3
(B) 3 : 2
(C) 2 : 3
(D) 15 : 10

Correct Answer: B

Explanation:

75 : 50 = 3 : 2.

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Question (5)

QN0019197

Which operation generally preserves similarity of shapes?

(A) Adding equal numbers to dimensions
(B) Multiplying dimensions by the same factor
(C) Subtracting equal numbers
(D) Changing one dimension only

Correct Answer: B

Explanation:

Same multiplication factor preserves shape.

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Question (6)

QN0019198

A rectangle is 48 cm long and 32 cm wide. Its simplified ratio is:

(A) 3 : 2
(B) 2 : 3
(C) 4 : 3
(D) 6 : 5

Correct Answer: A

Explanation:

48 : 32 simplifies to 3 : 2.

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Question (7)

QN0019199

Which pair of ratios are proportional?

(A) 8 : 12 and 6 : 10
(B) 12 : 18 and 8 : 12
(C) 15 : 20 and 10 : 18
(D) 9 : 14 and 18 : 30

Correct Answer: B

Explanation:

Both simplify to 2 : 3.

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Question (8)

QN0019200

The HCF of 60 and 40 is:

(A) 10
(B) 15
(C) 20
(D) 30

Correct Answer: C

Explanation:

The greatest common factor of 60 and 40 is 20.

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Question (9)

QN0019201

The simplest form of 90 : 60 is:

(A) 2 : 1
(B) 3 : 2
(C) 4 : 3
(D) 5 : 2

Correct Answer: B

Explanation:

Divide both terms by 30.

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Question (10)

QN0019202

Which symbol is used to indicate proportionality?

(A) =
(B) :
(C) ::
(D) ×

Correct Answer: C

Explanation:

The symbol :: denotes proportion.

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Question (1)

Which images look similar when both width and height change by the same factor?

Explanation:

Link:

Question (2)

In proportional change, both dimensions must change by the same ______.

Explanation:

Link:

Question (3)

An image has dimensions 80 mm × 40 mm. If both dimensions are halved, the new image is:

Explanation:

Link:

Question (4)

The ratio of width to height of a rectangle 75 mm × 50 mm is:

Explanation:

Link:

Question (5)

Which operation generally preserves similarity of shapes?

Explanation:

Link:

Question (6)

A rectangle is 48 cm long and 32 cm wide. Its simplified ratio is:

Explanation:

Link:

Question (7)

Which pair of ratios are proportional?

Explanation:

Link:

Question (8)

The HCF of 60 and 40 is:

Explanation:

Link:

Question (9)

The simplest form of 90 : 60 is:

Explanation:

Link:

Question (10)

Which symbol is used to indicate proportionality?

Explanation:

Link:

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