List of practice Questions

The physical adsorption of gases on the solid surface is due to

Which of the following explains the sequence of filling the electrons in different shells?

The oxidation numbers of hydrogen in $K H ,\, MgH _{2}$ and $NaH$ are respectively

In the gas equation: $PV = nRT$

Which of the following does not show hydrogen bonding?

Which of the following is the most electropositive element?

A quanity of heat required to change the unit mass of a solid substance, from solid state to liquid state, while the temperature remains constant, is known as

The waves in which the particles of the medium vibrate in a direction perpendicular to the direction of wave motion is known as

The dimensions of angular velocity, is

If the kinetic energy of a body becomes four times of its initial value, then new momentum will

A bullet is fired from a rifle. If the rifle recoils freely, then the kinetic energy of the rifle, is

If the equation for the displacement of a particle moving on a circular path is given by $(\theta)=$ $2 t^{3}+0.5$ where $\theta$ is in radians and $t$ in seconds, then the angular velocity of the particleat $t = 2\, sec$, is

Which of the following compounds will show geometrical isomerism?

According to Fajans rule covalent bond is favoured by:

Which of the following statement (s) is (are) correct ?

Which of the following will undergo aldol condensation?

White phosphorus $(P_4)$ has

There are four machines and it is known that exactly two of them are faulty. They are tested, one by one, in a random order till both the faulty machines are identified. Then, the probability that only two tests are needed, is

If $T_r$ is the $r$th term of an AP, for $r = 1,2,3,.... $ .If for some positive integers m and n, we have $T_m=\frac{1}{n}$ and $T_m=\frac{1}{m}$ then $T_{mn} $ equals

If $P = (x, y),F_1 = (3,0), F_2 = ( 3, 0)$ and $ 16x^2 + 25y^2 = 400,$ then $PF_1 + PF_2$ equals

If $P (1,2), Q (4,6), R (5, 7)$ and $S (a,b)$ are the vertices of a parallelogram $PQRS$, then

If $K_1$ and $K_2$ are the respective equilibrium constants for the two reactions, ${ XeF_6(g)+H_2O(g) <=> XeOF_4(g)+2HF(g)}$ ${ XeO_4(g)+XeF_6(g) <=> XeOF_4(g)+ XeO_3F_2(g)}$ The equilibrium constant of the reaction, ${XeO_4(g)+2HF(g) <=> XeO_3F_2(g)+H_2O(g)}$

Benzyl chloride $(C_6 H_5 CH_2 Cl)$ can be prepared from toluene by chlorination with

Benzene diazonium chloride on reaction with phenol in weakly basic medium gives

A metal beam having coefficient of linear expansion $ \alpha $ Youngs modulus $ Y $ , area of across section a and length L, is clamped at both ends. After cooling by $ t{}^\circ C, $ the force exerted in the clamp is