Bonding in which of the following diatomic molecule(s) become(s) stronger, on the basis of MO Theory, by removal of an electron?

(A) NO

(B) N₂

(C) O₂

(D) C₂

(E) B₂

Choose the most appropriate answer from the options given below :

The pair, in which ions are isoelectronic with AI³⁺ is :

Number of electron deficient molecules among the following

PH₃, B₂H₆, CCl₄, NH₃, LiH and BCl₃ is

White precipitate of AgCl dissolves in aqueous ammonia solution due to formation of :

Cerium (IV) has a noble gas configuration. Which of the following is correct statement about it?

Among the following, which is the strongest oxidizing agent?

Phenol on reaction with dilute nitric acid, gives two products. Which method will be most efficient for large scale separation?

In the following structures, which on is having staggered conformation with maximum dihedral angle?

The product formed in the following reaction.

The IUPAC name of ethylidene chloride is :

The major product in the reaction

The intermediate X, in the reaction :

In the following reaction :

The compounds A and B respectively are :

The reaction of with bromine and KOH gives RNH₂ as the end product. Which one of the following is the intermediate product formed in this reation?

The number of N atoms in 681 g of C₇H₅N₃O₆ is x $$\times$$ 10²¹. The value of x is (N_A = 6.02 $$\times$$ 10²³ mol^$$-$$1) (Nearest Integer)

The longest wavelength of light that can be used for the ionisation of lithium atom (Li) in its ground state is x $$\times$$ 10^$$-$$8 m. The value of x is ___________. (Nearest Integer).

(Given : Energy of the electron in the first shell of the hydrogen atom is $$-$$2.2 $$\times$$ 10^$$-$$18 J ; h = 6.63 $$\times$$ 10^$$-$$34 Js and c = 3 $$\times$$ 10⁸ ms^$$-$$1)

The standard entropy change for the reaction

4Fe(s) + 3O₂(g) $$\to$$ 2Fe₂O₃(s) is $$-$$550 J K^$$-$$1 at 298 K.

[Given : The standard enthalpy change for the reaction is $$-$$165 kJ mol^$$-$$1]. The temperature in K at which the reaction attains equilibrium is _____________. (Nearest Integer)

1 L aqueous solution of H₂SO₄ contains 0.02 m mol H₂SO₄. 50% of this solution is diluted with deionized water to give 1 L solution (A). In solution (A), 0.01 m mol of H₂SO₄ are added. Total m mols of H₂SO₄ in the final solution is ___________ $$\times$$ 10³ m mols.

The standard free energy change ($$\Delta$$G$$^\circ$$) for 50% dissociation of N₂O₄ into NO₂ at 27$$^\circ$$C and 1 atm pressure is $$-$$ x J mol^$$-$$1. The value of x is ___________. (Nearest Integer)

[Given : R = 8.31 J K^$$-$$1 mol^$$-$$1, log 1.33 = 0.1239 ln 10 = 2.3]

In a cell, the following reactions take place

$$\matrix{ {F{e^{2 + }} \to F{e^{3 + }} + {e^ - }} & {E_{F{e^{3 + }}/F{e^{2 + }}}^o = 0.77\,V} \cr {2{I^ - } \to {I_2} + 2{e^ - }} & {E_{{I_2}/{I^ - }}^o = 0.54\,V} \cr } $$

The standard electrode potential for the spontaneous reaction in the cell is x $$\times$$ 10^$$-$$2 V 298 K. The value of x is ____________. (Nearest Integer)

For a given chemical reaction

$$\gamma$$₁A + $$\gamma$$₂B $$\to$$ $$\gamma$$₃C + $$\gamma$$₄D

Concentration of C changes from 10 mmol dm^$$-$$3 to 20 mmol dm^$$-$$3 in 10 seconds. Rate of appearance of D is 1.5 times the rate of disappearance of B which is twice the rate of disappearance A. The rate of appearance of D has been experimentally determined to be 9 mmol dm^$$-$$3 s^$$-$$1. Therefore, the rate of reaction is _____________ mmol dm^$$-$$3 s^$$-$$1. (Nearest Integer)

If [Cu(H₂O)₄]²⁺ absorbs a light of wavelength 600 nm for d-d transition, then the value of octahedral crystal field splitting energy for [Cu(H₂O)₆]²⁺ will be ____________ $$\times$$ 10^$$-$$21 J. [Nearest Integer]

(Given : h = 6.63 $$\times$$ 10^$$-$$34 Js and c = 3.08 $$\times$$ 10⁸ ms^$$-$$1)

Number of grams of bromine that will completely react with 5.0 g of pent-1-ene is ___________ $$\times$$ 10^$$-$$2 g. (Atomic mass of Br = 80 g/mol) [Nearest Integer]