NTA JEE Main 26th June 2022 Shift 2 - Chemistry

The number of radial and angular nodes in $$4d$$ orbital are, respectively

Which of the following is a metalloid?

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

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

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 correct order of nucleophilicity is

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

The role of depressants in 'Froth Floation method' is to

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

Toluene can be easily converted into benzaldehyde by which of the following reagents?

The final product 'A' in the following reaction sequence

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

Which statement is NOT correct for p-toluenesulphonyl chloride?

Identify 'Z' among the following

Match List I with List II.

Choose the most appropriate answer from the options given below

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 $$100$$ g CNG is mixed with $$208$$ g oxygen in vehicles, it leads to the formation of $$CO_2$$ and $$H_2O$$ 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]

The moles of methane required to produce $$81$$ g of water after complete combustion is ______ $$\times 10^{-2}$$ mol. [nearest integer]

Amongst $$SF_4, XeF_4, CF_4$$ and $$H_2O$$, 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 $$36$$ g. When it is subjected to cooking at $$100°$$C, then the internal energy for vaporization in kJ mol$$^{-1}$$ is ______ [integer]
[Assume steam to be an ideal gas. Given $$\Delta_{vap}H^\circ$$ for water at $$373$$ K and $$1$$ bar is $$41.1$$ kJ mol$$^{-1}$$ : $$R = 8.31$$ J K$$^{-1}$$ mol$$^{-1}$$]

$$40\%$$ of HI undergoes decomposition to $$H_2$$ and $$I_2$$ at $$300$$ K. $$\Delta G^\circ$$ for this decomposition reaction at one atmosphere pressure is ______ J mol$$^{-1}$$ [nearest integer]
(Use $$R = 8.31$$ J K$$^{-1}$$ mol$$^{-1}$$; $$\log 2 = 0.3010$$, $$\ln 10 = 2.3$$, $$\log 3 = 0.477$$)

In a solid AB, A atoms are in ccp arrangement and 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]

The osmotic pressure exerted by a solution prepared by dissolving $$2.0$$ g of protein of molar mass $$60$$ kg mol$$^{-1}$$ in $$200$$ mL of water at $$27°$$C is ______ Pa. [integer value] (use $$R = 0.083$$ L bar mol$$^{-1}$$ K$$^{-1}$$)

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

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

Reaction of $$[Co(H_2O)_6]^{2+}$$ 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 ______