Assistant Director IB Past Papers

Where do most of the Asteroids lie?

1. In asteroid belt between the orbits of Mars and Jupiter
2. In asteroid belt between the orbits of Mars
3. Everywhere in the sky
4. In asteroid belt between the orbits of Jupiter and Venus

The term 'Blue-Shift' is used to indicated:

1. Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object.
2. Turning a star from white to blue
3. In future sun would become blue
4. None of these

One watt is equal to __________?

1. j
2. s/j
3. j/s
4. none of these

Fuel used in a Fast Breeder Reactor is:

1. Uranium Oxide
2. Uranium Plutonium carbide
3. Uranium Plutonium Oxide
4. None

Monsoon is caused by:

1. Seasonal reversal of winds
2. Revolution of Earth
3. Movement of the clouds
4. None

Which of the following atmospheric layers helps in radio communication?

1. Exosphere
2. Ionosphere
3. Troposphere
4. Stratosphere

A moderator is used in nuclear reactors in order to:

1. Accelerate the neutrons
2. Slow down the speed of the neutrons
3. Increase the number of elections
4. None

The ozone layer prevents ____ radiation from entering the atmosphere.

1. infra-red
2. ultraviolet
3. x-rays
4. gamma rays

The phenomenon of Aurora Borealis, the display of red and green lights in the northern hemisphere is due to radiations from:

1. Ionosphere
2. Troposphere
3. Mesosphere
4. None

Yeast is used in making bread because it produces:

1. carbon dioxide
2. sugar
3. bacteria
4. none