The velocity with which a projectile must be fired so that it escapes earth's gravitational does not depend on ……
- Gravitational constant
- Mass of the projectile
- mass of earth
- radius of he projectiles' orbit
Answer:The correct answer is: Mass of the projectile
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The structure of 
is
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Escape velocity on the surface of earth is 11.2kms-1 Escape velocity from a planet whose masses the same as that of earth and radius 1/4 that of earth is.....kms-1
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Correct configuration of the following molecule is : 
,
Correct configuration of the following molecule is : ,
When zeolite, which is hydrated sodium aluminium silicate, is treated with hard water the sodium ions are exchanged with
ions (present in hard water) with 
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3 Particle each of mass are kept at vertices of an equilateral triangle of side L. The gravitatioml field at center due to these particles is……
Hydrogen peroxide is
.
Hydrogen peroxide is
.Hydrogen can be obtained from water by
Hydrogen can be obtained from water by
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and alkali metal is a hard waterWhich of the following is/are hard water(s)
and alkali metal is a hard waterPick the odd one out
with cold water is very slow. All other statements except (b) are correct.Pick the odd one out
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What is true about ice
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Hydrogen will not reduce
will not reduce heated 
Hydrogen will not reduce
will not reduce heated 
is added to following oxides. Which one would give 
.and 
will not give with 
and 
will give 
and will react with to give 
and water is added to following oxides. Which one would give
.and will not give with and will give and will react with to give and waterWhich of the following pair will not produce dihydrogen gas
Which of the following pair will not produce dihydrogen gas