CBSE Class 8 Mathematics Proportional Reasoning 1 MCQs Set I

Question. In the ratio 14 : 21, the simplest form is
(a) 1 : 2
(b) 2 : 3
(c) 3 : 2
(d) 7 : 3

Answer: B

Question. To keep the sweetness same, lemonade and sugar must be
(a) more
(b) proportional
(c) less
(d) sweet

Answer: B

Question. Harmain is 1 year old and her brother is 5. Ratio 1 : 2 will happen when she is
(a) 2 years old
(b) 3 years old
(c) 4 years old
(d) 5 years old

Answer: C

Question. To fill 500 mL mug, tap takes 15 seconds. For 10 litres, capacity in mL is
(a) 1,000
(b) 5,000
(c) 10,000
(d) 20,000

Answer: C

Question. Extra cement to add is
(a) 1 kg
(b) 2 kg
(c) 3 kg
(d) 5 kg

Answer: B

Question. To share 12 counters in ratio 3 : 1, first person gets
(a) 3 counters
(b) 6 counters
(c) 9 counters
(d) 10 counters

Answer: C

Question. In ancient times, Rule of Three was used when known quantities were
(a) one
(b) two
(c) three
(d) four

Answer: C

Question. The first and last terms in a proportion are called
(a) middle terms
(b) extremes
(c) values
(d) numbers

Answer: B

Question. For stronger coffee, Manjunath uses more
(a) milk
(b) sugar
(c) decoction
(d) water

Answer: C

Question. What characteristic makes digital images appear similar even if they are of different sizes?
(a) All images must be square.
(b) The widths and heights have changed by the same factor.
(c) The images are rotated.
(d) They have the same color palette.

Answer: B

Question. The HCF of 60 and 40 is
(a) 10
(b) 20
(c) 30
(d) 40

Answer: B

Question. In Trairasika, the requisition 'c' is known as
(a) pramāṇa
(b) phala
(c) ichchhā
(d) phalam

Answer: C

Question. In Trairasika, the measure 'a' is called
(a) phala
(b) pramāṇa
(c) ichchhā
(d) yield

Answer: B

Question. Prashanti invested 75,000 and Bhuvan invested 25,000. Simplest ratio is
(a) 75 : 25
(b) 3 : 1
(c) 1 : 3
(d) 5 : 2

Answer: B

Question. 40 kg mixture has sand and cement in 3 : 1. Sand weight is
(a) 10 kg
(b) 20 kg
(c) 30 kg
(d) 40 kg

Answer: C

Question. Unit conversion: 1 hectare is equal to
(a) 1,000 sq. m
(b) 5,000 sq. m
(c) 10,000 sq. m
(d) 20,000 sq. m

Answer: C

Question. Rs 4500 in ratio 2 : 3, first part is
(a) 1000
(b) 1500
(c) 1800
(d) 2000

Answer: C

Question. The total mass of one 10 rupee coin is
(a) 5 grams
(b) 7.74 grams
(c) 10 grams
(d) 12 grams

Answer: B

Question. Hari built 40 ft wall using 2 bags of cement. Simplest form of this ratio is
(a) 40 : 2
(b) 20 : 1
(c) 10 : 1
(d) 2 : 40

Answer: B

Question. Find the missing number. 14 : 21 :: 6 : __
(a) 7
(b) 8
(c) 9
(d) 10

Answer: C