List of practice Questions

Diadelphous condition is found in:

Diborane reacts with water to form:

Conjugated double bonds are present of these in:

Brush bordered epithelium is found in:

Brain depends on blood for the supply of:

An ore of potassium is:

When a catalyst is added to a system, the:

A and B are two identical vessels. A contains 15 g of ethane at 298 K and 1 atm. The vessel B contains 75 g gas $ {{X}_{2}} $ at the same temperature and pressure. The vapour density of $ {{X}_{2}} $ is:

Which property is different for neutral atoms of the two isotopes of the same element?

A luminous object is placed at a distance of 30 cm from the convex lens of focal length 20 cm. On the other side of the lens, at what distance from the lens a convex mirror of radius of curvature 10 cm be placed in order to have an upright image of the object coincident with it;

A mixture of benzene and aniline can be separated by:

What is the oxidation state of Cr in $ Cr{{O}_{5}} $ ?

A radioactive element $ _{90}{{X}^{238}} $ decays into $ _{83}{{\Upsilon }^{222}}. $ The number of P-particle emitted are:

A body is thrown with a velocity of 9.8 m/s making an angle of $ 30{}^\circ $ with the horizontal. It will hit the ground after a time:

220 V, 50 Hz AC source is connected to an inductance of 0.2 H and a resistance of 20 ohm in series. What is the current in the circuit:

A small satellite is revolving near earths surface. Its orbital velocity will be nearly:

The kinetic energy $k$ of a particle moving along a circle of radius $R$ depends on the distance covered. It is given as $KE = as ^{2}$, where a is a constant. The force acting on the particle is

According to Newton, the viscous force acting between liquid layers of area A and velocity gradient $ \frac{\Delta \upsilon }{\Delta z} $ is given by $ F=\eta A\frac{\Delta \upsilon }{\Delta z} $ where $ \eta $ is a constant called coefficient of viscosity. The dimension of $ \eta $ are:

The maximum and minimum distance of a comet from the sun are $ 8\times 10^{12}m$ and $ 1.6\times 10^{12}m$ . If its velocity when nearest to the sun is 60 m/s, what will be its velocity in m/s when farthest?

For a gas $ \frac{R}{{{C}_{\upsilon }}}=0.67. $ This gas is made up of molecules which are:

Two equal negative charges $-q$ each are fixed at points $(0, -a)$ and $(0,a)$ on $y-axis$. A positive Charge $Q$ is released from rest at the point $(2a, 0)$ on the $x-axis$. The charge $Q$ will

The core of a transformer is laminated to reduce

An aluminium ring B faces an electromagnet A.The current I through A can be altered

Which one among the following shows particle nature of light?

Which one of the following is correctly matched?