The rate of a reaction quadruples when the temperature changes from 300 to 310 K. The activation energy of this reaction is : (Assume activation energy and preexponential factor are independent of temperature; ln 2 = 0.693; R = 8.314 J mol−1 K−1)

Two reactions R1 and R2 have identical pre-exponential factors. Activation energy of R1 exceeds that of R2 by 10 kJ mol–1. If k1 and k2 are rate constants for reactions R1 and R2 respectively at 300 K, then ln(k2/k1) is equal to : (R = 8.314 J mol–1 K–1)

The Tyndall effect is observed only when following conditions are satisfied: (a) The diameter of the dispersed particles is much smaller than the wavelength of the light used. (b) The diameter of the dispersed particle is not much smaller than the wavelength of the light used. (c) The refractive indices of the dispersed phase and dispersion medium are almost similar in magnitude. (d) The refractive indices of the dispersed phase and dispersion medium differ greatly in magnitude.

Among the following, correct statement is :

Adsorption of a gas on a surface follows Freundlich adsorption isotherm. Plot of log {x \over m} versus log p gives a straight line with slope equal to 0.5, then: ( {x \over m} is the mass of the gas adsorbed per gram of adsorbent)

The increasing order of the boiling points for the following compounds is :

The major product of the following reaction is :

Sodium salt of an organic acid ‘X’ produces effervescence with conc. H2SO4. ‘X’ reacts with the acidified aqueous CaCl2 solution to give a white precipitate which decolourises acidic solution of KMnO4. ‘X’ is :

Which of the following reactions is an example of a redox reaction?

The number of S = O and S − OH bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are :

The correct sequence of decreasing number of $$\pi$$-bonds in the structures of H2SO3, H2SO4 and H2S2O7 is :

The number of P−OH bonds and the oxidation state of phosphorus atom in pyrophosphoric acid (H4P2O7) respectively are :

XeF6 on partial hydrolysis with water produces a compound ‘X’. The same compound ‘X’ is formed when XeF6 reacts with silica. The compound ‘X’ is :

A metal ‘M’ reacts with nitrogen gas to afford ‘M3N’. ‘M3N’ on heating at high temperature gives back ‘M’ and on reaction with water produces a gas ‘B’. Gas ‘B’ reacts with aqueous solution of CuSO4 to form a deep blue compound. ‘M’ and ‘B’ respectively are :

The products obtained when chlorine gas reacts with cold and dilute aqueous NaOH are :

The reason for “drug induced poisoning” is :

Both lithium and magnesium display several similar properties due to the diagonal relationship; however, the one which is incorrect, is :

Which of the following compounds is most reactive to an aqueous solution of sodium carbonate ?

Which of the following compounds will show highest dipole moment ?

In the following structure, the double bonds are marked as I, II, III and IV Geometrical isomerism is not possible at site (s) :