List of top Physical Sciences Questions

Domestic microwave cooking uses
What is the volume of 2 g of oxygen at normal pressure and temperature ?
The pH value of 10 g of pure water was found to be 7. Then what will be the pH value of 1g of same water ?
The resistance of a piece of metal wire is R. On which of the following parameters of the wire or its material, the value of R does not depend upon ?
A train track is laid with 100 m pieces of steel rails. If coefficient of linear expansion of steel is 11 x 10-6, what must be the minimum gap between two pieces of rails so that the train can run safely between 0°C and 50°C ?
A boy starts running with a speed of 1 m / s from a corner of a square of sides 20m along its periphery. What will be his displacement after 35 second ?
In industrial production of ammonia from nitrogen and hydrogen gases, a mixture of potassium oxide and aluminium oxide is used for the purpose of:
Approximate velocity of sound in air at room temperature is
Diamond is an allotropic form of
What is the lowest possible temperature?
The speed of light in vacuum is
When a running bus stops suddenly, passengers tend to lean towards the front of the bus. It is related to
In human body, blood is cleaned by
A body of mass m is thrown vertically upward from the Earth's surface with an initial velocity u. At what height, magnitudes of its kinetic energy and potential energy will be same ?
resistance of the circuit
What is the equivalent resistance of the circuit shown at its terminals A-B?
Which is the gas that burns in carbide lamp?
A sealed vessel contains some gas at normal pressure and temperature. What will be the pressure of the gas at -273°C ?
A thermally insulated room has only one square glass window of sides 1 m and thickness 5 mm through which heat can transfer in and out. If temperature difference between inside and outside the room is only 1°C then what will be the rate of heat energy transfer ? (Thermal conductivity of glass is 0.0025 )
Approximately how much potassium chlorate need to be heated to obtain 22.4 litre of oxygen at N.T.P. ?
A parallel beam of light falls on a convex lens of focal length 15 cm along its axis. The emerging rays falls on a concave lens of focal length 5 cm kept 10 cm behind the convex lens. Then which of the following statements is true about the rays finally emerging out of the concave lens?