# Mathematics General Knowledge MCQs With Answers

If you have applied for ECAT exams preparations tests then you are here on right page for mathematics objective type question answers. All of these MCQs are important and helpful for Entry tests in Engineering College admission tests. Learn online maths quizzes that maths made easy for your online MCQs tests.

#### Mathematics Solved MCQs Online Quiz Test

Q.1: The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?

1. 25% increase
2. 50% increase
3. 50% decrease
4. 75% decrease

B

Q.2: The difference between the length and breadth of a rectangle is 23 m. If its perimeter is 206 m, then its area is———-?

1. 1520 m2
2. 2420 m2
3. 2480 m2
4. 2520 m2

D

Q.3: Water flows a tank 200 x 150m through a rectangular pipe 1.5 x 1.25m at the rate at 20kmph. In what time will be water rises by 2 meters?

1. 76 min
2. 80min
3. 90min
4. 96min

D

Q.4: The surface area of a (10cm x 4cm x3cm) brick is———-?

1. 84 Sq.cm
2. 124 Sq.cm
3. 164 Sq.cm
4. 180 Sq.cm

C

Q.5: The product of the area of three adjacent faces of a rectangular box is equal to———–?

1. the volume of the box
2. Twice the volume of the box
3. the square of the volume of the box
4. Cube root of the volume of the box

C

Q.6: The sum of the length breadth and depth of cuboid is 19cm and it’s diagonal is 5√5 cm it’s surface area is———?

1. 125 Sq.cm
2. 236 Sq.cm
3. 361 Sq.cm
4. None of these

B

Q.7: A hall is a 15m long and 12m board. If the sum of the areas of the floor and the ceiling is equal to the areas of the 4 walls the volume of the hall is:

1. 720 Cu.m
2. 1200 Cu.m
3. 361 Sq.cm
4. None of these

B

Q.8: A plot of land in the form of a rectangle has dimensions 240m x 180m. A draint 10m wide is dug all around it on the outside and the earth dug out is evenly spread over the plot increasing its surface level by 25cm. The depth of the drailent of

1. 1.227m
2. 1.225m
3. 1.233m
4. 1.229m

A

Q.9: A rectangular tank measuring (5m x 4.5m x 2.1m) is dug in the center of the field measuring 13.5m x 2.5m. The earth dug out is speed every over the remaining portion of the field raised?

1. 4m
2. 4.1cm
3. 4.2cm
4. 4.3m

C

Q.10: An agricultural field is in the form of a rectangle of length 20m and width 14m. A pit 6m long 3m wide and 2.5m deep is dug in a corner of the field and earth taken out of the pit is spread uniformly over. The remaining area of the field. The level of the field has raised by——–?

1. 15.16cm
2. 16.17cm
3. 17.18cm
4. 18.19m

C