List of practice Questions

The increasing order of basic strength for the following amines in aqueous phase is (1) aniline (2) triethylamine (3) ammonia (4) triphenylamine
The pair of rigid bodies with mass M and radius R, having the moment of inertia $\frac{MR^{2}}{2}$ can be
The correct increasing order of bond order values for the concerned species is
The operating point of transistor amplifier should be in
The electric flux passing through $a$ cube of side $ a $ , which holds a charge $ q $ at one of its corners is
A pair of unbiased dice is thrown once. Let $ X $ be the random variable denoting the product of numbers that appear on the two dice. Then $ P\left(X \ge21\right)= $
For a thin lens with radii of curvatures and $ R_{1} $ and $ R_{2} $ , refractive index $ n $ and focal length $ f $ , the factor $ \left(\frac{1}{R_{1}}-\frac{1}{R_{2}}\right) $ is equal to
In the plot of log $ \frac{x}{m} $ $ vs \, log \, p $ for an adsorption, a straight line inclined at an angle of $ \theta=14.04^{\circ} $ to the $ x $-axis was obtained. The $'n'$ value for this adsorption process is $ ( tan \, 14.04^{\circ}=0.25) $
A homogeneous catalytic process among the following is
The tuber of potato is a stem structure because it
The angle between the linear momentum and angular momentum of a particle moving along a circle is
The distance of closest approach for an alpha nucleus of velocity $ v $ bombarding a stationary heavy nucleus target of charge $ Ze $ is directly proportional to
If 25% of a radioactive element is left after 40 days, then its half life period is
The root means square velocity of hydrogen at $ STP $ is $ 1.83 \times 10^5 \,cm \, sec^{-1} $ and its means free path is $ 1.78 \times 10^{-5} \,cm $ . What will be the collision number at $ STP $ ?
If $\sin^{-1} \, x + \sin^{-1} \,y= \frac{\pi}{2}$ , then $x^2$ is equal to
A long solenoid has $1000$ turns. When a current of $4\,A$ flows through it, the magnetic flux linked with each turn of the solenoid is $4 \times 10^{-3} \, Wb$. The self-inductance of the solenoid is :
If '+' sign is assigned to beneficial interaction, '-' sign to detrimental and '0' sign to neutral interaction, then the population interaction represented by '+' '-' refers to
Which one of the following elements has the highest negative value for its electron gain enthalpy?
Identify the correct statement about a stationary wave
Osmotic pressure can be increased by
The equation of the normal to the curve $y(1 + x^2) = 2 - x$ where the tangent crosses $x-axis$ is
A solid cylinder of radius $R$ made of a material of thermal conductivity $K_1$ is surrounded by a cylindrical shell of inner radius $R$ and outer radius $2R$ made of a material of thermal conductivity $K_2$. The two ends of the combined system are maintained at two different temperatures. Then there is no loss of heat across the cylindrical surface and the system is in steady state. The effective thermal conductivity of the system is
The differential equation of the family of circles touching $y$-axis at the origin is
Assuming the expression for the pressure exerted by the gas on the walls of the container, it can be shown that pressure is
Which of the following is an analgesic ?