List of practice Questions

A simple pendulum of length L and mass (bob) M is oscillating in a plane about a vertical line between angular limits- $\phi$ and $+\phi$ For an angular displacement $\theta(| \theta |< \phi)$, the tension in the string and the velocity of the bob are T and v respectively. The following relations hold good under the above conditions
The bonds present in $N_2O_5$ are
In the electrolysis of alumina, cryolite is added to
A proton moving with a constant velocity passes through a region of space without any change in its velocity. If E and B represent the electric and magnetic fields respectively. Then, this region of space may have
If $f\left(x\right) = \frac{\sin\left[x\right]}{\left[x\right]} , \left[x\right]\ne0 $ = 0 , [ x ] = 0 Where [x] denotes the greatest integer less than or equal to $x$. then $\displaystyle \lim_{x \to 0} f(x) $ equals -
The increasing order (lowest first) for the values of e/m (charge/mass) for electron (e), proton (p), neutron (n) and alpha particle $ ( \alpha) $ is
Bohr's model can explain
An example of a reversible reaction is
The compound that is not a Lewis acid is
The X-ray beam coming from an X-ray tube will be
The compound that will not give iodoform on treatment with alkali and iodine is
The compound that is most reactive towards electrophilic substitution is
Hydrogen gas will not reduce
Acidic hydrogen is present in
70 cal of heat are required to raise the temperature of2 moles of an ideal diatomic gas at constant pressure from 30$^{\circ}$C to 35$^{\circ}$C. The amount of heat required (in calorie) to raise the temperature of the same gas through the same range (30$^{\circ}$C to 35$^{\circ}$C) at constant volume is
A rectangular loop carrying a current i is situated near a long straight wire such that the wire is parallel to one of the sides of the loop and is in the plane of the loop. If steady current I is established in the wire as shown in the figure, the loop will
A uniform chain of length $L$ and mass $M$ is lying on a smooth table and one third of its length is hanging vertically down over the edge of the table. If $g$ is acceleration due to gravity, work required to pull the hanging part on to the table is
Molecular formula of Glauber's salt is
Nitrogen dioxide cannot be obtained by heating
The oxide that gives $ H_2O_2 $ on treatment with a dilute acid is
Electromagnetic radiation with maximum wavelength is
Rate of diffusion of a gas is
A gas that cannot be collected over water is
If M and N are any two events, then the probability that exactly one of them occurs is
The electric charge for electrode deposition of one gram equivalent of a substance is