CBSE Class 8 Mathematics Proportional Reasoning 2 MCQs Set C

Question. Pie charts help us quickly
(a) Draw circles
(b) Interpret data
(c) Measure angles
(d) Count students

Answer: B

Question. If ratios a:b and c:d are proportional, then a multiplied by d is
(a) b + c
(b) b - c
(c) b multiplied by c
(d) a + b

Answer: C

Question. Relation for inverse proportion is x multiplied by y equals
(a) Zero
(b) Constant k
(c) x + y
(d) 100

Answer: B

Question. Map ratio 1 : 60,00,000 means 1 cm on map is how much on ground?
(a) 1 cm
(b) 60 cm
(c) 60,00,000 cm
(d) 60 km

Answer: C

Question. Strong pillars use ratio 1 : 1.5 : 3. If cement is 3 bags, sand will be
(a) 1.5 bags
(b) 3 bags
(c) 4.5 bags
(d) 9 bags

Answer: C

Question. Triangle angles in ratio 1 : 3 : 5. Angle A will be
(a) 10 degrees
(b) 20 degrees
(c) 30 degrees
(d) 60 degrees

Answer: B

Question. When workers are halved, days are doubled. This is
(a) Direct proportion
(b) Inverse proportion
(c) Map scale
(d) Pie chart

Answer: B

Question. Classroom sketch scale is given as 1 : 50. This is
(a) Direct proportion
(b) Inverse proportion
(c) Map scale
(d) Both a and c

Answer: D

Question. If 10 litres white paint is used in 2 : 3 : 5 ratio, total paint made is
(a) 10 litres
(b) 15 litres
(c) 20 litres
(d) 25 litres

Answer: C

Question. Time for batting in 150 min session (ratio 3:4:3:5) is
(a) 30 min
(b) 40 min
(c) 50 min
(d) 60 min

Answer: B

Question. Simplified ratio for the student grades is
(a) 1:2:3:4:5
(b) 6:5:4:3:2
(c) 2:2:2:2:2
(d) 12:10:8:6:4

Answer: B

Question. To find one part of purple paint (50 ml total), we divide 50 by
(a) 2
(b) 3
(c) 5
(d) 10

Answer: D

Question. Triangle angles sum is 180. If ratio is 1 : 3 : 5, largest angle is
(a) 20 degrees
(b) 60 degrees
(c) 100 degrees
(d) 180 degrees

Answer: C

Question. Viswanath's spice mix has coriander, chilli, dal, methi. The number of terms is
(a) 2
(b) 3
(c) 4
(d) 5

Answer: C

Question. 2 pumps take 18 hours. If we add 2 more pumps, total pumps is
(a) 2
(b) 3
(c) 4
(d) 6

Answer: C

Question. Distance is 90 km. If speed is 30, time is 3. If speed is 60, time is
(a) 6 hours
(b) 3 hours
(c) 1.5 hours
(d) 1 hour

Answer: C

Question. For 3 bags cement, gravel bags needed are
(a) 3
(b) 6
(c) 9
(d) 12

Answer: C

Question. Convert 60,00,000 cm into kilometres. Value is
(a) 6 km
(b) 60 km
(c) 600 km
(d) 0.6 km

Answer: B

Question. 20 workers take 4 days. Total "worker-days" is
(a) 20
(b) 24
(c) 80
(d) 10

Answer: C

Question. To make a pie chart, angles must be
(a) All equal
(b) Proportional to data
(c) Always 90 degrees
(d) Very small

Answer: B