The gaseous reaction \(A+B \rightleftharpoons 2 C+D+Q\) is most favoured at

What will be the change in the electrode potential of chromium electrode dipping into chromic sulphate solution, when the electrolyte is diluted 10 times at \(25^\circ\)C? [ \(E^0\ (\text{Cr}^{3+}/\text{Cr})] = -0.74\)V

Which one of the following coordination entity is chiral?

Match the coordination compounds in Column I having the given type of hybridisation of \(\mathrm{M}^{\mathrm{n}+}\) ion and magnetic moment as given in Column II.
\(\begin{array}{|l|l|l|l|} \hline & \text { Coordination compounds. } & & \text { Hybridisation \& Magnetic nature. } \\ \hline \text { A } & \mathrm{Ni}(\mathrm{CO})_4 & \text { P } & \mathrm{sp}^3, \quad \mu=5.92 \mathrm{BM} \\ \hline \text { B } & {\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}} & \text { Q } & \mathrm{sp}^3, \quad \mu=2.84 \mathrm{BM} \\ \hline \text { C } & {\left[\mathrm{Ni}(\mathrm{Cl})_4\right]^{2-}} & \text { R } & \mathrm{sp}^3, \quad \mu=0 \\ \hline \text { D } & {[\mathrm{MnBr}]^{2-}} & \text { S } & \mathrm{dsp}^2, \quad \mu=0 \\ \hline \end{array}\)

(i) and (ii) are 2 chemical reactions carried out at TK with identical pre-exponential factors.
(i). \(\text{X} \rightarrow \text{Y} + \text{W}\) with \(k_1\) as rate constant.
(ii). \(\text{X} \rightarrow \text{Z} + \text{W}\) with \(k_2\) as rate constant.
The Activation energy for reaction (ii) is 3 times that of reaction (i).
What is the expression for \(k_1\)?

How much faster would a reaction proceed at \(25^{\circ} \mathrm{C}\) than at \(0^{\circ} \mathrm{C}\) if the activation energy is \(65 \mathrm{~kJ}\) ?

Identify the pair of gases that have equal rates of diffusion

A five-digits number is formed by using the digits \(1,2,3,4,5\) with no repetition. The probability that the numbers 1 and 5 are always together, is

Given are 4 statements related to the chemical properties of Glucose.
Identify the two incorrect statements from the following.
A. It reacts with \(\mathrm{Br}_2\) (aq) to form Saccharic acid.
B. Reacts with Acetic anhydride to form Glucose tetraacetate.
C. Reacts with Hydroxylamine to give Glucose oxime.
D. It reacts with ammoniacal \(\mathrm{AgNO}_3\) to form ammonium salt of Gluconic acid with deposition of silver.

\(\lim _{x \rightarrow \infty} x \sin \left(\frac{2}{x}\right)\) is equal to

A block of metal A is connected in series with another block of metal B such that the two metal blocks have the same area of cross sections. The thermal conductivity of metal A is K and the free end of metal A is at \(80^{\circ} \mathrm{C}\). The temperature of the interface is \(60^{\circ} \mathrm{C}\) and the free end of metal B is at \(20^{\circ} \mathrm{C}\). Assuming the two metals have the same thickness, the conductivity of metal B is:

Consider a compound slab consisting of two different materials having equal lengths, thickness and thermal conductivities \(K\) and \(2 K\) respectively. The equivalent thermal conductivity of the slab is

The melting of ice