CBSE Class 8 Mathematics Proportional Reasoning 1 MCQs Set 08

Question. When changes to width and height are same, we say they are
(a) proportional
(b) plus
(c) extra
(d) big

Answer: A

Question. A car travels 90 km in 150 minutes. If it continues at the same speed, what distance will it cover in 4 hours?
(a) 90 km
(b) 144 km
(c) 240 km
(d) 60 km

Answer: B

Question. To find car distance, we use 150 * x = 240 * 90. Here x is
(a) time
(b) distance
(c) speed
(d) fuel

Answer: B

Question. In 40 kg mixture (3 : 1 ratio), cement weight is
(a) 5 kg
(b) 10 kg
(c) 15 kg
(d) 20 kg

Answer: B

Question. To compare tea prices, weight must be in
(a) same units
(b) different units
(c) heavy units
(d) any units

Answer: A

Question. Solution has acid and water in 1 : 5. Total is 240 mL. Acid is
(a) 20 mL
(b) 40 mL
(c) 60 mL
(d) 80 mL

Answer: B

Question. To make 40 mL green paint, yellow paint needed is
(a) 15 mL
(b) 20 mL
(c) 25 mL
(d) 30 mL

Answer: C

Question. Find missing number. Ratio is 14 : 21. For __ : 42, number is
(a) 14
(b) 28
(c) 21
(d) 7

Answer: B

Question. The fruit or result in Rule of Three is called
(a) pramāṇa
(b) phala
(c) ichchhā
(d) money

Answer: B

Question. What is used in mathematics to represent proportional relationships?
(a) Difference
(b) Sum
(c) Ratio
(d) Product

Answer: C

Question. When Neelima was 3, her mother was 30. When she is 12, mother is 39. Are these ratios proportional?
(a) Yes
(b) No
(c) Maybe
(d) Don't know

Answer: B

Question. Himachal tea costs Rs 200 for 200 g. Price for 1 kg will be
(a) Rs 800
(b) Rs 1000
(c) Rs 1200
(d) Rs 2000

Answer: B

Question. Manjunath mixes 15 mL coffee with 35 mL milk. Ratio is
(a) 35 : 15
(b) 15 : 35
(c) 3 : 7
(d) Both b and c

Answer: D

Question. If a quantity ‘x' is to be divided in the ratio m:n, what are the expressions for the two parts?
(a) m × (m + n) and n × (m + n)
(b) m⁄x and n⁄x
(c) m × (x⁄(m + n)) and n × (x⁄(m + n))
(d) x ÷ m and x ÷ n

Answer: C

Question. If 1 litre water has 1 kg mass, mass of 1 litre gold will be
(a) 1 kg
(b) 18.5 kg
(c) 37 kg
(d) 2 kg

Answer: B

Question. To make soft idlis, rice and urad dal ratio is
(a) 1 : 1
(b) 2 : 1
(c) 3 : 1
(d) 4 : 1

Answer: B

Question. Which tea is cheaper?
(a) Himachal
(b) Meghalaya
(c) Both same
(d) None of the options

Answer: B

Question. Amount of extra cement to be added to 10 kg to make it 12 kg is
(a) 1 kg
(b) 2 kg
(c) 3 kg
(d) 4 kg

Answer: B

Question. According to Aryabhata's "Rule of Three," if ‘pramāņa' is ‘a', ‘phala' is ‘b', and ‘ichchhā' is ‘c', how is ‘ichchhāphala'
(d) calculated?
(a) pramāņa × phala ÷ ichchhā
(b) phala × ichchhā ÷ pramāņa
(c) ichchhā + phala – pramāņa
(d) pramāņa × ichchhā ÷ phala

Answer: B

Question. For 6 glasses of lemonade, Kesang used 10 spoons. Now she makes 18 more glasses. Total sugar spoons will be
(a) 20
(b) 30
(c) 40
(d) 50

Answer: B