List of practice Questions

A resistor, capacitor and an inductor are connected in series and are in resonance. What is the phase difference between the supplied voltage and current ?
Capacitance of a spherical conductor of radius $R$ is proportional to
A person suffering from myopia should use a
What is the relationship between electric field intensity $E$, current density $J$ and specific resistance $\rho$ ?
When a pentavalent impurity is added in Ge crystal then, what type of semiconductor is obtained ?
At what temperature the root mean square velocity of a gas is twice of its root mean velocity at $27^{\circ} C $?
If two waves of same amplitude A each produce Maximum Marks 600 a resultant wave of amplitude equal to one of its wave, then the phase difference between them will be
In a triode, $\mu, g_{m}$ and $r_{p}$ are related as
$120\, AC$ voltage is applied to $10$ ohm resistance. The peak voltage across the resistor is
$11^{3}-10^{3} +9^{3} -8^{3} +7^{3}-6^{3} +5^{3}-4^{3}+3^{3}-2^{3}+1^{3}= $
$(100)^{50} + (99)^{50}$
10 g of a gas at NTP occupies 5 litres. The temperature at which the volume becomes double for the same mass of gas at the same pressure is
If k is the Boltzmann cottstant, the average kinetic energy of a gas molecule at absolute temperature T is
The average kinetic energy of a molecule of a gas at absolute temperature T is propor tional to
The following four gases are at the same temperature. In which gas do the molecules have the maximum root mean square speed?
At a given temperature if $V_{rms}$ is the root mean square velocity of the molecules of a gas and $V_s$ be the velocity of sound in it, then these are related as $\left(\gamma = \frac{C_p}{C_v}\right)$
Statement 1. Boyle's law is independent of the selection of scale of temperature.$\,$ Statement 2. Boyle's law does not hold good for a gas at low temperature and high pressure.
The heat required to raise the temperature of one mole of gas by 1$^\circ$C at constant volume is $k$ times that required to raise the temperature of one mole of triatomic gas at constant pressure. What is the value of $k$ ?
The relation between volume V, pressure P and absolute temperature T of an ideal gas is $PV = x T$ where x is a constant The value of x depends upon
Method used to convert fresh ppt. into colloidal state by adding a small amount of electrolyte is
$10^{-4}$ g of gelatin is required to be added to $ 100 cm^3$ of a standard gold sol to just prevent its coagulation by the addition of $1 cm^3 of 10% NaCl$ solution to it. Hence, the gold number of gelatin is
Which one of the following is an example of heterogenous catalysis?
$1$ unified atomic mass unit $(1 \,u)$ is equal to
Blastocoel is produced in human blastocyst by secretion of
Outer extra-embryonic membrane which also forms villi is