The correct sequence of reagents used in the preparation of 4-bromo-2-nitroethyl benzene from benzene is :

What is 'X' in the given reaction?

The solubility of Ca(OH)₂ in water is :

[Given : The solubility product of Ca(OH)₂ in water = 5.5 $$\times$$ 10^$$-$$6]

Which among the following species has unequal bond lengths?

In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment?

(i) [FeF₆]^3$$-$$

(ii) [Co(NH₃)₆]³⁺

(iii) [NiCl₄]^2$$-$$

(iv) [Cu(NH₃)₄]²⁺

The correct order of acid character of the following compounds is :

The major product of the following reaction is :

Correct statement about the given chemical reaction is :

Given below are two statements :

Statement I : The identification of Ni²⁺ is carried out by dimethyl glyoxime in the presence of NH₄OH.

Statement II : The dimethyl glyoxime is a bidentate neutral ligand.

In the light of the above statements, choose the correct answer from the options given below :

Carbylamine test is used to detect the presence of primary amino group in an organic compound. Which of the following compound is formed when this test is performed with aniline?

Which of the following is correct structure of $$\alpha$$-anomer of maltose?

Which of the following compound is added to the sodium extract before addition of silver nitrate for testing of halogens?

The major product of the following reaction is :

The correct order of bond dissociation enthalpy of halogens is :

Copper reduces NO$$_3^ - $$ into NO and NO₂ depending upon the concentration of HNO₃ in solution. (Assuming fixed [Cu²⁺] and P_NO = P_NO2), the HNO₃ concentration at which the thermodynamic tendency for reduction of NO$$_3^ - $$ into NO and NO₂ by copper is same is 10^x M. The value of 2x is _______. (Rounded off to the nearest integer)

[Given, $$E_{C{u^{2 + }}/Cu}^o = 0.34$$ V, $$E_{NO_3^ - /NO}^o = 0.96$$ V, $$E_{NO_3^ - /N{O_2}}^o = 0.79$$ V and at 298 K, $${{RT} \over F}$$(2.303) = 0.059]

The spin only magnetic moment of a divalent ion in aqueous solution (atomic number 29) is _________ BM.

If a compound AB dissociates to the extent of 75% in an aqueous solution, the molality of the solution which shows a 2.5 K rise in the boiling point of the solution is ____________ molal. (Rounded off to the nearest integer)

[K_b = 0.52 K kg mol^$$-$$1]

Electromagnetic radiation of wavelength 663 nm is just sufficient to ionise the atom of metal A. The ionization enegy of metal A in kJ mol^$$-$$1 is __________. (Rounded off to the nearest integer)

[h = 6.63 $$\times$$ 10^$$-$$34 Js, c = 3.00 $$\times$$ 10⁸ ms^$$-$$1, N_A = 6.02 $$\times$$ 10²³ mol^$$-$$1]

Consider titration of NaOH solution versus 1.25 M oxalic acid solution. At the end point following burette readings were obtained.

(i) 4.5 mL

(ii) 4.5 mL

(iii) 4.4 mL

(iv) 4.4 mL

(v) 4.4 mL

If the volume of oxalic acid taken was 10.0 mL then the molarity of the NaOH solution is ________ M. (Rounded off to the nearest integer)

Five moles of an ideal gas at 293 K is expanded isothermally from an initial pressure of 2.1 MPa to 1.3 MPa against at constant external pressure 4.3 MPa. The heat transferred in this process is _________ kJ mol^$$-$$1. (Rounded off to the nearest integer) [Use R = 8.314 J mol^$$-$$1K^$$-$$1]

The number of compound/s given below which contain/s -COOH group is __________. (Integer answer)

(A) Sulphanilic acid

(B) Picric acid

(C) Aspirin

(D) Ascorbic acid

The rate constant of a reaction increases by five times on increase in temperature from 27$$^\circ$$C to 52$$^\circ$$C. The value of activation energy in kJ mol^$$-$$1 is _________. (Rounded off to the nearest integer)

[R = 8.314 J K^$$-$$1mol^$$-$$1]

Among the following, number of metal/s which can be used as electrodes in the photoelectric cell is _________. (Integer answer)

(A) Li

(B) Na

(C) Rb

(D) Cs