| 1 |
The mass of a body at the center of earth is:
|
Zero <br>
Remains constant<br>
More than at the surface<br>
Less then at he surface <br>
|
| 2 |
Speed of sound is maximum in:
|
Gas <br>
Liquid <br>
Same in all <br>
Solid <br>
|
| 3 |
Which principle states that when a body is partially or totally immersed in a fluid it experience and upward thrust equal to the weight of fluid displaced by it:
|
Archimedes <br>
Hooke's <br>
Pascal's <br>
Newton's <br>
|
| 4 |
When a bar magnet is cut into two equal halves, the Pole strength of each piece.
|
Become double <br>
become Zero <br>
Remains the same <br>
Becomes half <br>
|
| 5 |
The Ancient Greeks said that the Four Elements were Earth,and fire in 390 BC, Plato added fifth element of this list , What was it?
|
Ether <br>
Blood <br>
Carbon <br>
Nitrogen<br>
|
| 6 |
In 2010, China became the third country in the world to possess an anti satellite weapon system.The other two countries are:
|
Germany and Russia <br>
France and the USA<br>
The USA and Germany <br>
The USA and Russia <br>
|
| 7 |
The magnetic effect of electric current was first observed by:
|
Henry <br>
Oersted <br>
Faraday <br>
Volta <br>
|
| 8 |
Non-conventional source of energy best suite for Pakistan is:
|
Tidal wave energy <br>
Solar energy <br>
Wind energy <br>
Nuclear energy <br>
|
| 9 |
Radioactive element which has been found to have reserves in D.G Khan area of Pakistan is:
|
Uranium <br>
Thorium<br>
Radium <br>
Plutonium <br>
|
| 10 |
What is the source of the electric energy in an artificial satellite?
|
Nuclear reactor <br>
A dynamo <br>
A thermopile<br>
Solar cells<br>
|
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