mathematics MCQs – Page 124

Practise multiple-choice questions from mathematics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

mathematics Mcqs

2461. A tank 3 m long, 2 m wide and 1.5 m deep is dug in a field 20 m long and 14 m wide. If the earth dug out is evenly spread out over the field, the level of the field will raise by nearly?
0

A. 0.29 cm

B. 0.299 cm

C. 4.15 cm

D. 2.98 cm

2462. A wooden box of dimensions 8m x 7m x 6m is to carry rectangular boxes of dimensions 8cm x 7cm x 6cm. The maximum number of boxes that can be carried in 1 wooden box is?
0

A. 7500000

B. 1200000

C. 1000000

D. 9800000

2463. Calculate the number of bricks, each measuring 25 cm * 15 cm * 8 cm required to construct a wall of dimensions 10 m * 4 m * 5 m when 10% of its volume is occupied by mortar?
0

A. 6000

B. 4000

C. 5000

D. 7000

2464. A river 2m deep and 45 m wide is flowing at the rate of 3 kmph the amount of water that runs into the sea per minute is?
0

A. 3000 M3

B. 4500 M3

C. 2700 M3

D. 27000 M3

2465. The length of the wire of 0.2mm radius that can be drawn after melting a solid copper sphere of diameter 18cm?
0

A. 2430 m

B. 243 m

C. 24300 m

D. 24.3 m

2466. A brick measures 20 cm * 10 cm * 7.5 cm how many bricks will be required for a wall 25 m * 2 m * 0.75 m?
0

A. 22000

B. 23000

C. 24000

D. 25000

2467. The radius of a wire is decreased to one third if volume remains the same length will increase
0

A. 3 times

B. 1 Time

C. 6 times

D. 9 times

2468. The length of the longest rod that can fit in a cubical room of 4 m side is?
0

A. 5.196 m

B. 8.66 m

C. 6.928 m

D. 7.264 m

2469. The diameters of two spheres are in the ratio 1:2 what is the ratio of their volumes?
0

A. 9:16

B. 1:8

C. 4:03

D. 3:04

2470. In digging a pond 20 m * 10 m * 5 m the volumes of the soil extracted will be_________?
0

A. 10000 cu.m

B. 2000 cu.m

C. 100 cu.m

D. 1000 cu.m

2471. The height of two right circular cones are in the ratio 1:2 and their perimeters of their bases are in the ratio 3:4, the ratio of their volume is_________?
0

A. 3:08

B. 0.419444444

C. 9:32

D. 9:16

2472. A metal sheet 27 cm long 8cm broad and 1 cm thick is melted into a cube. The difference between the surface areas of two solids is__________?
0

A. 300 cm2

B. 296 cm2

C. 286 cm2

D. 284 cm2

2473. What is the total surface area of a right circular cone of height 14 cm and base radius 7 cm?
0

A. 344.35 cm2

B. None of these

C. 344.35 cm2

D. 344.35 cm2

2474. Find the ratio between whole surfaces of a sphere and a hemisphere?
0

A. 3:01

B. 4:3

C. 3:04

D. 1:03

2475. The slant height of a cone is 12 cm and radius of the base is 4cm, find the curved surface of the cone.
0

A. 48 ? cm2

B. 24 ? cm2

C. 36 ? cm2

D. 74 ? cm2

2476. The area of a base of a cone is 30 cm2
0

A. 50 cm3

B. 40 cm3

C. 120 cm3

D. 60 cm3

2477. The ratio of the volumes of a cube to that of the sphere which will fit inside the cube is________?
0

A. 4:04

B. 6: ?

C. 4:03

D. 4:02

2478. Find the length of the wire required to go 15 times round a square field containing 69696 m2
0

A. 15820 m

B. 15640 m

C. 15840 m

D. 16840 m

2479. A solid consists of a circular cylinder with an exact fitting right circular cone placed on the top. The height of the cone is h. If the total volume of the solid is three times the volume of the cone then the height of the cylinder is________?
0

A. 4h

B. 2h/3

C. 3h/2

D. 2h

2480. A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?
0

A. 3:02

B. 2:01

C. 25 : 18

D. 27:20:00

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