ECAT Pre General Science Online Test With Answers

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ECAT Pre General Science Online Test

Sr. # Questions Answers Choice
1 A dirty carpet is to be cleaned by heating. This is in according with______law of motion. First Second Third None of these
2 A certain force gives an acceleration of 2 m/sec2to a body mass 5 kg. The same force would give a 20 kg object an acceleration of: 0.5 m/sec<sup>2</sup> 5 m/sec<sup>2</sup> 1.5 m/sec<sup>2</sup> 9.8 m/sec<sup>2</sup>
3 Slope of velocity time graph represents: Acceleration Speed Torque Work
4 In above figures, tell which set of graphs shows that a body is moving with uniform velocity: (i) and (ii) (ii) and (iii) (iii) and (iv)
5 If the velocity time graph is a straight line parallel to the time-axis, then it means: The body is moving with uniform velocity The body is moving with uniform acceleration The body is at rest None of these
6 The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is: 3 N 4 N 5 N 6 N
7 The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is: 3 N 4 N 5 N 6 N
8 A body is moving with constant velocity of 10 m/sec in the north-east direction. Then its acceleration will be: 10 m/sec<sup>2</sup> 20 m/sec<sup>2</sup> 30 m/sec<sup>2</sup> Zero
9 A body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be: 10 NS 100 NS 140 NS 200 NS
10 When brakes are applied to a fast moving car, the passenger will be thrown: Forward Backward Downward none of these
11 Which one of the following is dimensionless: Acceleration Velocity Density Angle
12 The dimension of linear inertia is: MLT<sup>2</sup> ML<sup>0</sup>T<sup>-2</sup> ML<sup>0</sup>T<sup>0</sup> MLT<sup>-1</sup>
13 A ball is dropped from a height of 4.2 meters. To what height it will rise if there is no loss of KE after rebounding? 4.2 m 8.4 12.6 None of these
14 A body moving with an acceleration of 5 m/sec2started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds? 150 m 250 m 350 m 400 m
15 The short distance between two points direction from its initial point to final point is called: Velocity Displacement Speed Distance
16 Ethanol (alcohol) is a type of: Electric fuel Bio fuel Nuclear fuel None of these
17 Root out the conventional source of energy: Energy from blomass hydroelectric energy Geothermal energy None of these
18 Blomass includes: Crop residue Natural vegetation Animal dung All of these
19 The consumption source if energy is: Energy from blomass Hydroelectric energy Geothermal energy None of these
20 One KWh is equal to: 3.6 x 10<sup>2</sup>J 3.6 KJ 3,6 x 10<sup>1</sup>KJ 3,6 MJ
21 The velocity given to a body to go out of the influence of earth's gravity is known as: Terminal velocity Orbital velocity Escape velocity None of these
22 When two protons are brought closer potential energy of both of them: Increases Decreases Remains same None of these
23 A body of weight 1 N has a kinetic energy of 1 joule when its speed is: 1.46 m sec<sup>-1</sup> 2.44 m sec<sup>-1</sup> 3.42 m sec<sup>-1</sup> 4.43 m sec<sup>-1</sup>
24 Tick the conservative force: tension in a string Air resistance Elastic spring force Frictional force
25 Work done along a closed path in a gravitational force is: maximum Minimum Zero Unity
26 If x-component of a vector is -3 N and y-component is 3 N, then angle of resultant vector will x-axis is: 45<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 315<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 135<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 225<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span>
27 If two forces of magnitudes 3.5 and 2.5 N act on a body such that the angle between the forces is zero, then magnitude of the resultant will be: 1.0 N 6 N 3.5 N 12 N
28 The magnitude of resultant of three vectors is 3. Its x-component is one, y-component is two, then its z-component is: 0 1 2 3
29 The resultant of two velocities 3 m/sec and 400 cm/sec making an angle 90° with each other is: 20 m/sec 5 m/sec 3 m.sec None of these
30 A force of 5 n is acting Y-axis. Its component along X-axis is: 7 N 5 N Zero 10 N
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