Which of the following show both Frenkel and Schottky defect?

Consider the acid strength of the carboxylic acids.
\(\mathrm{~ I . ~ P h C O O H ~ I I . ~ o - N}\)
III. \(p-\mathrm{NO}_{2} \mathrm{C}_{6} \mathrm{H}_{4} \mathrm{COOH} \quad\) IV. \(m-\mathrm{NO}_{2} \mathrm{C}_{6} \mathrm{H}_{4} \mathrm{COOH}\)

Arrange the following redox couples in the increasing order of their reducing strength:
\(\begin{array}{ll}
{[\mathrm{A}]=\mathrm{Cu} / \mathrm{Cu}^{2+}} & \mathrm{E}^0=-0.34 \mathrm{~V} \\
{[\mathrm{~B}]=\mathrm{Ag} / \mathrm{Ag}^{+}} & \mathrm{E}^0=-0.8 \mathrm{~V} \\
{[\mathrm{C}]=\mathrm{Ca} / \mathrm{Ca}^{2+}} & \mathrm{E}^0=+2.87 \mathrm{~V} \\
{[\mathrm{D}]=\mathrm{Cr} / \mathrm{Cr}^{3+}} & \mathrm{E}^0=+0.74 \mathrm{~V}
\end{array}\)

Inductive effect involves

The halide which will not react with \(\mathrm{C}_6 \mathrm{H}_6\) in presence of anhydrous \(\mathrm{AlCl}_3\) is

The concentration of a reactant \(X\) decreases from 0.1 \(\mathrm{M}\) to \(0.025 \mathrm{M}\) in \(40 \mathrm{~min}\). If the reaction follows I order kinetics, the rate of the reaction when the concentration of \(X\) is \(0.01 \mathrm{M}\) will be

Choose the incorrect statement from the following.

The minimum energy required by a hydrogen atom in ground state to emit radiation in Paschen series is nearly:

A cell of emf E and internal resistance r is connected to two external resistances \(\mathrm{R_1}\) and \(\mathrm{R_2}\) and a perfect ammeter. The current in the circuit is measured in four different situations:
(a) without any external resistance in the circuit.
(b) with resistance \(\mathrm{R_1}\) only
(c) with \(\mathrm{R_1}\) and \(\mathrm{R_2}\) in series combination.
(d) with \(\mathrm{R_1}\) and \(\mathrm{R_2}\) in parallel combination.
The currents measured in the four cases in ascending order are

The maximum number of possible interference maxima when slit separation is equal to 4 times the wavelength of light used in a double slit experiment is

A proton is moving along negative X axis. If a uniform magnetic field is applied parallel to the positive Z axis, then choose the correct answer from the following options;
1. The proton will experience magnetic force along positive Y direction and will move along a circular path in the XY plane
2. The proton will experience magnetic force along negative Y direction and will move along a circular path in the XY plane
3. The proton will experience magnetic force along positive Y direction and will move along a circular path in the XZ plane
4. The proton will experience magnetic force along negative Y direction and will move along a circular path in the XZ plane

Which statement is not true for describing enzymes?

Two coherent monochromatic light beams of intensities \(I\) and \(4 I\) are superimposed. The maximum and minimum possible resulting intensities are