List of practice Questions

A parallel plate capacitor is made by stacking $n$ equally spaced plates connected alternatively. If the capacitance between any two adjacent plates is $C$, then the resultant capacitance is :
Two thin wire rings each having a radius $R$ are placed at a distance $d$ apart with their axes coinciding. The charges on the two rings are $+ q$ and $- q$. The potential difference between the centres of the two rings is :
The figure shows a system of two concentric spheres of radii $r_1$, and $r_2$ and kept at temperatures $T_1$ and $T_2$, respectively. The radial rate of flow of heat in a substance between the two concentric spheres, is proportional to :
The number of isomeric hexanes is:
Due to the presence of an unpaired electron, free radicals are:
Among the following the strongest nucleophile is
Which types of isomerism is shown by $2, 3$-dichlorobutane ?
If reduction factor of a tangent galvanometer is $900 \,mA$, then the current through it to produce a deflection of $ 45^{\circ} $ is
A magnetic needle is kept in a non-uniform magnetic field. It experiences:
At $90^{\circ} C$, pure water has $H _{3} O ^{+}$ion concentration of $10^{-6} mol / L ^{-1}$. The $K_{w}$ at $90^{\circ} C$ is :
For the reaction $ {2NO2(g) <=> 2\,NO(g) + O2(g)}$ $\left(K_{c} = 1.8\times10^{-6} \,at \,184^{\circ}C\right)$ $\left(R = 0.00831 \,k J/\left(mol. K\right)\right)$ When $K_{p}$ and $K_{c}$ are compared at $184^{\circ}$ C it is found that :
Hydrogen ion concentration in mol/L in a solution of pH = 5.4 will be :
What is the conjugate base of $OH^-$ ?
When $10\, mL$ of $0.1\, M$ acetic acid $(pK_{a} = 5.0)$ is titrated against $10\, mL$ of $0.1\, M$ ammonia solution $(pK_{b} = 5.0)$, the equivalence point occurs at $pH$
In uniform circular motion, the factor that remains constant is
The maximum range of a gun on horizontal terrain is $16 \,km$, if $g=10 \,m / s ^{2}$. What must be the muzzle velocity of the shell?
A projectile is fired at $30^{\circ}$ with momentum $p$. Neglecting friction, the change in kinetic energy, when it returns back to the ground, will be
A particle is moving under the influence of a force which is fixed in magnitude and acting at an angle $\theta$ in the direction of motion. The path described by the particle is
A projectile can have the same range $R$ for two angles of projection. If $t_1$ and $t_2$ be the times of flights in the two cases, then the product of the two times of flights is proportional to :
A bullet is fired with a speed of $1000 \,m/s$ in order to hit a target $100 \,m$ away. If $g = 10 \,m/s^2$ . The gun should be aimed
The horizontal range of a projectile is $400\, m$. The maximum height attained by it will be:
Gibberellic acid induces flowering:
In Young's double slit experiment, fringe width decreases by 25% when apparatus is immersed in a liquid. Refractive index of the liquid is
When interference is observed, energy is
In an interference experiment, distance between the slits is 2 mm and screen is placed at distance 1 m from the slits. Fourth dark fringe is formed exactly opposite to one of the slits. Wavelength of light used in nm is