| 1 |
Which of the following is most elastic
|
Wet clay <br>
Steel <br>
Plastic <br>
Rubber <br>
|
| 2 |
The swing of a spinning cricket ball in air can be explained on the bases of
|
Turbulence caused by wind <br>
Sudden change in wind direction <br>
Buoyancy of air <br>
Bernoulli's theorem <br>
|
| 3 |
The freezer in a refrigerator is fitted near the top
|
It facilities convection current currents <br>
To keep it away form hot compressor which is nearer to the bottom <br>
Because of convenience <br>
To minimize power consumption <br>
|
| 4 |
Which metal is extracted form sea water?
|
Magnesium <br>
Potassium <br>
Berylium<br>
Aluminum <br>
|
| 5 |
A piece of metal plate with a circular hole is heated, IF the metal plate expands on heating the diameter of the hole will -
|
Decrease
Increases or decrease depending on the diameter of the hole <br>
Increase of decrease depending upon the material of the plate <br>
Increase <br>
|
| 6 |
The direction of vibration of practices with respect t wave direction in transverse wave is_
|
30 degree <br>
45 degree <br>
Right angle <br>
parallel <br>
|
| 7 |
X-ray is:
|
Electromagnetic waves<br>
The flow of positive charge <br>
<sup>The flow of neutral practices <br></sup>
The flow of electron<br>
|
| 8 |
At 4 degree C,volume of a certain mass of water is
|
Minimum<br>
Increased by 1/12th pat its volume at 0°C<br>
Maximum <br>
Remains sames as the volume at 0° C<br>
|
| 9 |
In which of the following processes of transmission of heat material medium is not required:
|
Radiation<br>
Conduction<br>
Convection <br>
Reflection<br>
|
| 10 |
Many elements gave non-integral atomic masses because
|
their isotopes have non-integral masses <br>
They have isotopes <br>
Their isotopes have different masses <br>
The constituent's neutrons, protons and electrons combine to give fractional masses<br>
|
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