For a reaction of the type, \(2 \mathrm{X}+\mathrm{Y} \rightarrow \mathrm{A}+\mathrm{B}\), the following is the data collected:

Experiment	[X]	[Y]	Initial rate of formation of A
1	0.2	0.2	\(12.0 \times 10^{-3}\)
2	0.6	0.4	\(14.4 \times 10^{-2}\)
3	0.6	0.8	\(5.76 \times 10^{-1}\)
4	0.8	0.2	\(4.8 \times 10^{-2}\)

What is the overall order of the reaction?

Match \(\mathrm{A}, \mathrm{B}, \mathrm{C}\) and D with the appropriate functions given.
\(\begin{array}{|l|l|l|l|} \hline & \text { Column I } & & \text { Functions } \\ \hline \text { A } & \text { Oxidoreductase } & \text { P } & \text { Malfunctioning leads to Addison's disease. } \\ \hline \text { B } & \text { Phosphodiester bonds } & \text { Q } & \text { Regulates responses to external stimuli. } \\ \hline \text { C } & \text { Adrenal cortex } & \text { R } & \text { Catalyses glycolysis. } \\ \hline \text { D } & \text { Epinephrine. } & \text { S } & \text { Links nucleotides together. } \\ \hline \end{array}\)

A wooden box excavated from Indus valley had an activity of \(1.18 \times 10^{13}\) disintegration per minute per \(g\) of carbon. What is the approximate age of this civilisation?

A buffer solution has equal volumes of \(0.1 \mathrm{M}\) \(\mathrm{NH}_4 \mathrm{OH}\) and \(0.01 \mathrm{M} \mathrm{NH}_4 \mathrm{Cl}\). The \(\mathrm{pK}\) of the base is 5 . The \(\mathrm{pH}\) is

Which of the following conditions are favourable for chemisorption?

The \(\mathrm{RMS}\) velocity of \(\mathrm{CH}_{4}, \mathrm{He}\) and \(\mathrm{SO}_{2}\) are in the ratio of

Amino acids exist as zwitter ions at

The primary of a transformer when connected to a DC battery of \(10 \mathrm{~V}\) draws a current of \(1 \mathrm{~mA}\). The number of turns of the primary and secondary windings are 50 and 100 , respectively. The voltage in the secondary and the current drawn by the circuit in the secondary are respectively

For \(S_{N}\) I reaction, the order of reactivity of haloalkanes is

\(5.8 \mathrm{~g}\) of a gas maintained at \(95^{\circ} \mathrm{C}\) occupies the same volume as \(0.368 \mathrm{~g}\) of hydrogen gas maintained at a temperature of \(17^{\circ} \mathrm{C}\) and pressure being the same atmospheric pressure for both the gases. What is the molecular mass of the unknown gas?

If \(A=\left[\begin{array}{ll}1 & 0 \\ 1 & 1\end{array}\right]\) and \(A^{8}=a A+b I\), then \((a, b)=\)

Which of the following show both Frenkel and Schottky defect?

Infrared radiation was discovered in 1800 by