- Person sitting in an artificial satellite of the earth have
- When the velocity of a moving object is doubled its
- Brilliance of diamond is due to
- Which type of reaction produces most harmful radiation
- Fathometer is used to measure
- The energy possessed by the water collected in the reservoir of a dam
- Colour of a light is determined by its
- Germanium is
- During rusting
- Hydrogen bomb is based on the principle of
- What will happen to a balloon filled with hydrogen
- In a sprayer the liquid rises in the tube due to
- Almost all aircraft flight occurs in the ---
- The minimum audible frequency to human ears is --- Hz.
- The normal atmospheric pressure is --- cm of Mercury
- Energy is measured in
- Adding Machine was invented by
- Robert Watson Watt invented
- What is the colour of light used in automobiles during snow fall
- Red+Green gives --- colour
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