JEE Main entrance exam Question Bank Solutions for Chemistry (JEE Main)

\[\ce{_92U^235}\] is a member of VI B group. The new element formed by the emission of α-particle will be a member of ______ group.

The pair of compounds which cannot exist together in solution is ______.

Which of the following ions acts as a typical transition metal ion?

Consider the following standard electrode potentials (E° in volts) in aqueous solution:

Based on these data, which of the following statements is correct?

In the ground state of atomic Fe (Z = 26), the spin-only magnetic moment is ______ × 10^-1 BM.
(Round off to the nearest integer).

[Given: `sqrt3 = 1.73, sqrt2 = 1.41`]

Which sodium salt will be heated with soda lime to obtain propane?

The disproportionation of \[\ce{MnO^{2-}_4}\] in acidic medium resulted in the formation of two manganese compounds A and B. If the oxidation state of Mn in B is smaller than that of A, then the spin-only magnetic moment (µ) value of B in BM is ______. (Nearest integer)

The IUPAC nomenclature of an element with electronic configuration [Rn] 5f¹⁴6d¹7s² is ______.

Which of the following name formula combinations is not correct?

Photochemical smog does not generally contain ______.

Air pollution that occurs in sunlight is ______.

The relation between solubility of a gas in liquid at constant temperature and external pressure is stated by which law?

What is the quantity of hydrogen gas liberated when 46 g sodium reacts with excess ethanol?

Aqueous solution of which of the following boron compounds will be strongly basic in nature?

Two isomers (A) and (B) with molar mass 184 g/mol and elemental composition C 52.2%; H 4.9% and Br 42.9% gave benzoic acid and p-bromobenzoic acid, respectively on oxidation with KMnO₄. Isomer ‘A’ is optically active and gives a pale yellow precipitate when warmed with alcoholic AgNO3. Isomer ‘A’ and ‘B’ are, respectively:

2.2 g of nitrous oxide (N₂O) gas is cooled at a constant pressure of 1 atm from 310 K to 270 K causing the compression of the gas from 217.1 mL to 167.75 mL. The change in internal energy of the process, Δ U is '- x' J. The value of 'x' is ______.

(Nearest integer)

(Given: atomic mass of N = 14 g mol^-1 and of O = 16 g mol^-1, Molar heat capacity of N₂O is 100 JK^-1 mol^-1)

Identify products A and B.

Given below are two statements:

Statement I: Colourless cupric metaborate is reduced to cuprous metaborate in a luminous flame.

Statement II: Cuprous metaborate is obtained by heating boric anhydride and copper sulphate in a non-luminous flame.

In the light of the above statements, choose the most appropriate answer from the options given below.

In the given reaction,

\[\ce{2-Bromo-3, 3-dimethyl butane ->[C2H5OH][\underset{(Major product)}{'A'}]}\] Product A is ______.

Which of the following is Lindlar's catalyst?