Chemistry-
General
Easy
Question
Heavy water is compound of
- Oxygen and heavier isotopes of hydrogen
- Hydrogen and heavier isotopes of oxygen
- Heavier isotopes of oxygen and hydrogen
- None of these
The correct answer is: Oxygen and heavier isotopes of hydrogen
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A particle falls towards earth from infinity. It's velocity reaching the earth would be……
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Radius of orbit of satellite of earth is R. Its K.E is proportional to
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Energy required to move a body of mass m from an orbit of radius 2R to 3R is
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A body is projected vertically upwards from the surface of a planet of radius R with a velocity equal to half the escape velocity for that planet. The maximum height attained by the body is….
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The Gravitational P.E of a body of mas m at the earth's surface is -mg Re. Its gravitational potential energy at a height Re from the earth's surface will be = here (Re is the radius of the earth),
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The Gravitational P.E of a body of mas at the earth's surface is -mg Re. Its gravitational potential energy at a height Re from the earth's surface will be = here (Re is the radius of the earth),
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Escape velocity of a body of 1 kg. on a planet is 100ms-1 . Gravitational potential energy of the body at the planet is =.....j
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