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

Boric acid (H₃BO₃) is ______.

Hydrogen has three isotopes: protium (¹H), deuterium (²H or D) and tritium (³H or T). They have nearly the same chemical properties but different physical properties. They differ in ______.

\[\begin{array}{cc}\phantom{......}\ce{OH}\\
\phantom{....}|\\\ce{CH3CH2 - C - CH3}\\
\phantom{....}|\\\phantom{.....}\ce{Ph}\end{array}\] cannot be prepared by ______.

Borazine, also known as inorganic benzene, can be prepared by the reaction of 3-equivalents of “X” with 6-equivalents of “Y”. “X” and “Y”, respectively are ______.

The reaction of H₃N₃B₃Cl₃(A) with LiBH₄ in tetrahydrofuran gives inorganic benzene (B). Further, the reaction of (A) with (C) leads to H₃N₃B₃(Me)₃. Compounds (B) and (C) respectively, are ______.

The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is ______.

Polar stratospheric clouds facilitate the formation of ______.

The structures of beryllium chloride in the solid state and vapour phase, are ______.

In the given conversion the compound A is:

Which of the following compound does not contain sulphur atom?

Which of the following are isostructural pairs?

(A) \[\ce{SO^{2-}4}\] and \[\ce{CrO^{2-}4}\]

(B) SiCl₄ and TiCl₄

(C) NH₃ and \[\ce{NO^-3}\]

(D) BCl₃ and BrCl₃

Which of the following compound gives pink colour on reaction with phthalic anhydride in cone. H₂SO₄ followed by treatment with NaOH?

The metal that can be purified economically by fractional distillation method is ______.

Which of the following reaction DOES NOT involve Hoffmann bromamide degradation?

Given below are two statements:

Statement I: Both CaCl₂.6H₂O and MgCl₂.8H₂O undergo dehydration on heating.

Statement II: BeO is amphoteric whereas the oxides of other elements in the same group are acidic.

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

The functions of antihistamines are ______.

The internal energy (in J) when 90 g of water undergoes complete evaporation at 100°C is ______.

(Given ΔH_vap for water at 373 K = 41 kJ/mol, R = 8.314 JK⁻¹ mol⁻¹)

Methyl amine on reaction with chloroform in the presence of NaOH gives ______.

The specific rate constant of the decomposition of N₂O₅ is 0.008 min⁻¹. The volume of O₂ collected after 20 minutes is 16 ml. The volume that would be collected at the end of the reaction is ______ mL. NO₂ formed is dissolved in CCl₄.

How many conformations does ethane have?