List of practice Questions

A real gas behaves as an ideal gas,
A piece of brass (alloy of copper and zinc) weighs 12.9 g in air. When completely immersed in water it weighs 11.3 g. What is the mass of copper contained in the alloy ? (Specific gravities of copper and zinc are 8.9 and 7.1 respectively)
A particle is moving on a circular path of 10 m radius. At any instant of time, its speed is ${5\, m \, s^{-1}}$ and the speed is increasing at a rate of ${2\, m \, s^{-2}}$. The magnitude of net acceleration at this instant is
A galvanometer can be converted into a voltmeter by connecting a
A unit cell of diamond consists of
The volume strength of $3.0\, N\, H_2O_2$ is
Three centre - two electron bond is present in
In the $3^{rd}$ period, the first ionisation potential is of the order
In the periodic table, the period number corresponds to
A cross-linked polymer is
When concentration of carbon dioxide increases in blood, respiration becomes
Brunner?s glands are found in
Which of these is secreted by duodenum?
Enteropeptidase present in ?succus entericus? converts _______.
Which of the following elements is relatively immobile in plants?
A closed organ pipe and an open organ pipe of same length produce $2 \,beats/second$ when they are set into vibrations together in fundamental mode. The length of open pipe is now halved and that of closed pipe is doubled. The number of beats produced will be
A circular coil of $n$ turns and radius $R$ has a magnetic induction of strength at its centre is
A ball of mass $m$ moving with a constant velocity $u$ strikes against a ball of same mass at rest. If $e$ = coefficient of restitution, then what will be the ratio of velocity of two balls after collision ?
Rydberg constant is
An object is kept on a smooth inclined plane of $1 $ in $ l. $ The horizontal acceleration to be imparted to the inclined plane so that the object is stationary relative to incline is
An electromagnetic wave transfers
Which of the following wave can?t travel in vacuum?
What is the name given to that part of the electromagnetic spectrum which is used for taking photographs of earth under foggy conditions from great heights?
A soap bubble exhibits brilliants colours due to
The gas cause Green House Effect is