CBSE Class 8 Mathematics Proportional Reasoning 1 MCQs Set 05

Question. Height and width of image A is 60 mm and 40 mm. Image C is 30 mm and 20 mm. The factor is
(a) 1/2
(b) 1/3
(c) 1/4
(d) 1/5

Answer: A

Question. Simplest form of ratio 60 : 40 is
(a) 2 : 3
(b) 3 : 2
(c) 6 : 4
(d) 1 : 1

Answer: B

Question. In ancient India, what were problems of proportionality called by Aryabhata and others?
(a) Rule of Four
(b) Rule of Three problems
(c) Proportion Problems
(d) Cross-Multiplication Rules

Answer: B

Question. Car travels 90 km in 150 minutes. To find distance in 4 hours, convert hours to
(a) seconds
(b) minutes
(c) days
(d) km

Answer: B

Question. In 4 : 3 ratio for 42 counters, parts are
(a) 20 and 22
(b) 24 and 18
(c) 30 and 12
(d) 21 and 21

Answer: B

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

Answer: C

Question. For 18 glasses of lemonade, Kesang used 30 spoons of sugar. The factor of change is
(a) 2
(b) 3
(c) 4
(d) 5

Answer: B

Question. To divide quantity 'x' in ratio m : n, part 1 is
(a) m times x
(b) m times x divided by (m+n)
(c) x divided by m
(d) n times x

Answer: B

Question. In 240 mL solution (1 : 5), water amount is
(a) 100 mL
(b) 150 mL
(c) 200 mL
(d) 220 mL

Answer: C

Question. Mass of gold and water is in the ratio
(a) 1 : 1
(b) 2 : 37
(c) 37 : 2
(d) 10 : 1

Answer: C

Question. Unit conversion: 1 square metre is approximately
(a) 5 sq. ft
(b) 10.764 sq. ft
(c) 20 sq. ft
(d) 100 sq. ft

Answer: B

Question. How is temperature converted from Fahrenheit to Celsius?
(a) Celsius = (9⁄5) × Fahrenheit + 32
(b) Celsius = (5⁄9) × Fahrenheit – 32
(c) Celsius = (5⁄9) × (Fahrenheit – 32)
(d) Celsius = Fahrenheit – 32 × (5⁄9)

Answer: C

Question. Prashanti invested how much money?
(a) Rs 25,000
(b) Rs 50,000
(c) Rs 75,000
(d) Rs 1,00,000

Answer: C

Question. Nitin's wall is 60 ft and Hari's wall is 40 ft. Nitin used 3 bags cement and Hari used 2. The simplest ratio for both is
(a) 10 : 1
(b) 20 : 1
(c) 30 : 1
(d) 40 : 1

Answer: B

Question. The formula for yield 'd' given by Āryabhaṭa is
(a) a times b
(b) (b times c) divided by a
(c) a plus b
(d) c minus a

Answer: B

Question. To divide quantity x in ratio m : n, the number of groups is
(a) m
(b) n
(c) m + n
(d) m * n

Answer: C

Question. 4 hours in minutes is
(a) 100
(b) 200
(c) 240
(d) 300

Answer: C

Question. If we add same number to both terms of a ratio, the new ratio
(a) stays same
(b) is proportional
(c) changes
(d) becomes zero

Answer: C

Question. Simplest form of ratio 90 : 60 is
(a) 3 : 2
(b) 2 : 3
(c) 9 : 6
(d) 1 : 2

Answer: A

Question. Images look similar when width and height change by the same
(a) number
(b) factor
(c) color
(d) line

Answer: B