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Chemistry

The number of radial and angular nodes in \( 4d \) orbital are, respectively:

Match List-I with List-II.

Choose the most appropriate answer from the options given below:

Which of the following elements is considered as a metalloid?

The role of depressants in ‘Froth Floatation method’ is to:

Boiling of hard water is helpful in removing the temporary hardness by converting calcium hydrogen carbonate and magnesium hydrogen carbonate to:

s-Block element which cannot be qualitatively confirmed by the flame test is:

The oxide which contains an odd electron at the nitrogen atom is:

Which one of the following is an example of disproportionation reaction?

The most common oxidation state of Lanthanoid elements is \( +3 \). Which of the following is likely to deviate easily from \( +3 \) oxidation state?

The measured BOD values for four different water samples (\( \mathrm{A-D} \)) are as follows: \( \mathrm{A} = 3 \,\mathrm{ppm} \); \( \mathrm{B} = 18 \,\mathrm{ppm} \); \( \mathrm{C} = 21 \,\mathrm{ppm} \); \( \mathrm{D} = 4 \,\mathrm{ppm} \). The water samples which can be called as highly polluted with organic wastes, are:

The correct order of nucleophilicity is:

Oxidation of toluene to benzaldehyde can be easily carried out with which of the following reagents?

The major product in the following reaction is:

Halogenation of which one of the following will yield m-substituted product with respect to methyl group as a major product?

The reagent, from the following, which converts benzoic acid to benzaldehyde in one step is:

The final product, ‘A’ in the following reaction sequence is:

Which statement is NOT correct for p-toluenesulphonyl chloride?

The final product ‘C’ in the following series of reactions:

Which of the following is NOT an example of synthetic detergent?

Which one of the following is a water soluble vitamin, that is not excreted easily?

CNG is an important transportation fuel. When \( 100 \, \mathrm{g} \) CNG is mixed with \( 208 \, \mathrm{g} \) oxygen in vehicles, it leads to the formation of \( \mathrm{CO_2} \) and \( \mathrm{H_2O} \) and produces large quantity of heat during this combustion, then the amount of carbon dioxide, produced in grams is _______. [Nearest integer] (Assume CNG to be methane)

In a solid \( \mathrm{AB} \), \( \mathrm{A} \) atoms are in ccp arrangement and \( \mathrm{B} \) atoms occupy all the octahedral sites. If two atoms from the opposite faces are removed, then the resultant stoichiometry of the compound is \( {A_xB_y} \). The value of \( x \) is _______. [Nearest integer]

Amongst \( \mathrm{SF_4} \), \( \mathrm{XeF_4} \), \( \mathrm{CF_4} \) and \( \mathrm{H_2O} \), the number of species with two lone pairs of electrons is _______.

A fish swimming in water body when taken out from the water body is covered with a film of water of weight \( 36 \, \mathrm{g} \). When it is subjected to cooking at \( 100^\circ \mathrm{C} \), then the internal energy for vaporization in \( \mathrm{kJ \, mol^{-1}} \) is _______. [Nearest integer]
[Assume steam to be an ideal gas. Given $\Delta_{\text{vap}}H^\ominus$ for water at \( 373 \, \mathrm{K} \) and \( 1 \, \mathrm{bar} \) is \( 41.1 \, \mathrm{kJ \, mol^{-1}} \); \( R = 8.31 \, \mathrm{J \, K^{-1} \, mol^{-1}} \)]

The osmotic pressure exerted by a solution prepared by dissolving \( 2.0 \, \text{g} \) of protein of molar mass \( 60 \, \text{kg mol}^{-1} \) in \( 200 \, \text{mL} \) of water at \( 27^\circ \text{C} \) is ________ \( \text{Pa} \). [Integer value] (Use \( R = 0.083 \, \text{L} \, \text{bar} \, \text{mol}^{-1} \, \text{K}^{-1} \))

\( 40\% \) of \( \text{HI} \) undergoes decomposition to \( \text{H}_2 \) and \( \text{I}_2 \) at \( 300 \, \text{K} \). \( \Delta G^\ominus \) for this decomposition reaction at one atmosphere pressure is ________ \( \text{J mol}^{-1} \). [Nearest integer] (Use \( R = 8.31 \, \text{J K}^{-1} \text{mol}^{-1} \); \( \log 2 = 0.3010 \), \( \ln 10 = 2.3 \), \( \log 3 = 0.477 \))

\( \text{Cu(s)} + \text{Sn}^{2+}(0.001 \, \text{M}) \longrightarrow \text{Cu}^{2+}(0.01 \, \text{M}) + \text{Sn(s)} \)
The Gibbs free energy change for the above reaction at \( 298 \, \text{K} \) is \( x \times 10^{-1} \, \text{kJ mol}^{-1} \).
The value of \( x \) is ________. [Nearest integer]
[Given: \( E^\ominus_{\text{Cu}^{2+}/\text{Cu}} = 0.34 \, \text{V} \); \( E^\ominus_{\text{Sn}^{2+}/\text{Sn}} = -0.14 \, \text{V} \); \( F = 96500 \, \text{C mol}^{-1} \)]

Catalyst \( A \) reduces the activation energy for a reaction by \( 10 \, \text{kJ mol}^{-1} \) at \( 300 \, \text{K} \). The ratio of rate constants, \( \dfrac{k_{T,\ \text{Catalysed}}}{k_{T,\ \text{Uncatalysed}}} \) is \( e^{x} \). The value of \( x \) is ________. [Nearest integer]
[Assume that the pre-exponential factor is same in both the cases. Given \( R = 8.31 \, \text{J K}^{-1} \text{mol}^{-1} \)]

Reaction of \( [\text{Co}(\text{H}_2\text{O})_6]^{2+} \) with excess ammonia and in the presence of oxygen results into a diamagnetic product. Number of electrons present in \( t_{2g} \)-orbitals of the product is ________.

The moles of methane required to produce \( 81 \, \text{g} \) of water after complete combustion is ________ \( \times 10^{-2} \, \text{mol} \). [Nearest integer]

JEE Main 2022 26th June Evening Shift

Physics Chemistry Mathematics

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The correct order of nucleophilicity is: