Teachoo MCQ Test

10 Question MCQ (including Assertion)

Preparing for CBSE

Chapter 7 Class 8 - Proportional Reasoning-1 (Ganita Prakash) | 10 questions

Timed test. Answer every question before time runs out. Correct answers and solutions appear after submission.

Time remaining 960

Question 1 of 10

Question 1 of 10

Using the table, which images have the same width-to-height ratio as Image A?

Dimensions of five images
Image	Width (mm)	Height (mm)
A	60	40
B	40	20
C	30	20
D	90	60
E	60	60

A B and C B B and E C C and D D D and E

Select one option. Answers are shown after the test.

Question 2 of 10

Assertion (A): \(24:36\) simplifies to \(2:3\).
Reason (R): Both 24 and 36 are even numbers.

A Both A and R are true, and R is the correct explanation of A. B Both A and R are true, but R is not the correct explanation of A. C A is true, but R is false. D A is false, but R is true.

Select one option. Answers are shown after the test.

Question 3 of 10

Which statement of proportion is true?

A 8 : 3 :: 24 : 6 B 7 : 12 :: 12 : 7 C 14 : 21 :: 6 : 9 D 12 : 18 :: 28 : 12

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Question 4 of 10

Delhi has about 30 million people in 1,484 km²; Mumbai has about 20 million in 550 km². Which is more crowded by population per km²?

A Delhi, about 36,364 people/km² B Mumbai, about 36,364 people/km² C Delhi, about 20,216 people/km² D Both are equally crowded

Select one option. Answers are shown after the test.

Question 5 of 10

Assertion (A): At 90 km per 150 minutes, a car covers 144 km in 4 hours.
Reason (R): Four hours equals 240 minutes.

A Both A and R are true, and R is the correct explanation of A. B Both A and R are true, but R is not the correct explanation of A. C A is true, but R is false. D A is false, but R is true.

Select one option. Answers are shown after the test.

Question 6 of 10

Tea costs ₹200 for 200 g in Himachal and ₹800 for 1 kg in Meghalaya. Which conclusion is correct?

A Himachal tea costs ₹200 more per kg. B Meghalaya tea costs ₹200 more per kg. C Both cost the same per kg. D The prices cannot be compared.

Select one option. Answers are shown after the test.

Question 7 of 10

If \(a:b=3:7\) and \(a=12\), what is \(b\)?

A 16 B 21 C 24 D 28

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Question 8 of 10

Assertion (A): Mumbai is more crowded than Delhi using the chapter's population and area data.
Reason (R): Mumbai has a smaller area than Delhi.

A Both A and R are true, and R is the correct explanation of A. B Both A and R are true, but R is not the correct explanation of A. C A is true, but R is false. D A is false, but R is true.

Select one option. Answers are shown after the test.

Question 9 of 10

Nitin uses 3 cement bags for 60 ft of wall; Hari uses 2 bags for 40 ft. What can be concluded?

A The cement use per foot is the same. B Nitin's wall uses more cement per foot. C Hari's wall uses more cement per foot. D The information is insufficient.

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Question 10 of 10

A 40 mL paint mixture contains blue and yellow in the ratio \(3:5\). After 20 mL yellow is added, what is the new blue-to-yellow ratio?

A 3 : 7 B 1 : 3 C 2 : 5 D 3 : 8

Select one option. Answers are shown after the test.