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ECAT Pre General Science Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | Work done is maximum when angle between force and displacement is: | 0<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> 90<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> 180<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> None of these |
| 2 | Work has the dimension as that of: | Torque Angular momentum Linear momentum Power |
| 3 | If force and displacement are in opposite direction, the work done is taken as: | Positive work Negative work Zero work Infinite work |
| 4 | The work performed on an object does not depend on: | Force applied Angle at which force is inclined to the displacement Initial velocity of the object Displacement |
| 5 | Work is always done on a body when: | A force acts on it It moves through certain distance None of A or B is correct Both A and B is correct |
| 6 | Work is a: | Scalar quantity Vector quantity Base quantity None of these |
| 7 | The time rate of change of displacement is called: | Time Acceleration Speed Velocity |
| 8 | One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass: | 2 kg 3 kg 4 kg 8 kg |
| 9 | Force is a: | Scalar quantity Base quantity Derived quantity None of these |
| 10 | An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is: | 100 m/sec 140 m/sec 1960 m/sec 196 m/sec |
| 11 | Bodies which falls freely under gravity provides good example of motion under: | Uniform acceleration Non-uniform acceleration Uniform velocity None of these |
| 12 | Swimming becomes possible because of______law of motion: |
First Second Third None of these |
| 13 | A dirty carpet is to be cleaned by heating. This is an accordance with____ law of motion: | First Second Third None of these |
| 14 | A certain force gives an acceleration of 2 m/sec2 to a body if mass 5 kg. The same force would give a 29 kg object an acceleration of: | 0.5 m/sec2 5 m/sec2 1.5 m/sec2 9.8 m/sec2 |
| 15 | Slope of velocity-time graph represents: | Acceleration Speed Torque Work |
| 16 | In the above figures, tell which set is graphs shows that a body is moving uniform velocity: | (i) and (ii) (ii) and (iii) (i) and (iii) (ii) and (iv) |
| 17 | If the velocity time graph is a straight line parallel to time-axis, then it means that: | The body is moving with uniform velocity The body is moving with uniform acceleration The body is at rest None of above |
| 18 | The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is: | 3 N 4 N 5 N 6 N |
| 19 | A body is moving with constant velocity of 10 m/sec in the north east direction. Then its acceleration will be: | 10 m/sec2 20 m/sec2 30 m/sec2 Zero |
| 20 | A body of mass 5 kg is acted upon by a total change n momentum will be: | 10 NS 100 NS 140 NS 200 NS |
| 21 | When brakes are applied to a fast moving car, the passengers will be thrown: | Forward Backward Downward None of these |
| 22 | Which one of the following is dimensionless. | Acceleration Velocity Density Angle |
| 23 | The dimension of linear inertia is: | MLT<sup>2</sup> ML<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><span style="font-size: 10.5pt; line-height: 107%; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">T<sup>-2</sup></span> ML<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;">°T</span><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> MLT<sup>-1</sup> |
| 24 | A ball is dropped from a height of 4.2 meters. To what height will take it rise if there is no loss of KE after rebounding? | 4.2 m 8.4 m 12.6 m none of these |
| 25 | 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 |
| 26 | The shortest distance between two points directed from its initial point to final point is called: | Velocity Displacement Speed Distance |
| 27 | Ethanol (alcohol) as a type of: | Electric fuel Bio fuel Nuclear fuel None of these |
| 28 | Root out of the conventional source of energy: | Energy from biomass Hydroelectric energy Geothermal energy None of these |
| 29 | Biomass includes: | Crop residue Natural vegetation Animal dung All of these |
| 30 | The consumption of energy by a 1000 watt heter in half an hour is: | 5 Kwh 0.5 Kwh 2.5 Kwh 3.2 Kwh |
