List of top Chemistry Questions asked in JEE Main

Which one of the following compounds possesses the most acidic hydrogen?

The Kjeldahl method of Nitrogen estimation fails for which of the following reaction products?
(a) nitrobenzene with Sn/HCl
(b) benzonitrile (C₆H₅CN) with LiAlH₄
(c) benzyl cyanide (C₆H₅CH₂CN) with (i) SnCl₂ + HCl, (ii) H₂O
(d) aniline with NaNO₂/HCl

Which of the following compounds produces an optically inactive compound on hydrogenation?

The total number of monohalogenated organic products in the following (including stereoisomers) reaction is ______.

Two compounds A and B with same molecular formula (\(\mathrm{C_3H_6O}\)) undergo Grignard's reaction with methylmagnesium bromide to give products C and D. Products C and D show following chemical tests.

Test	C	D
Ceric ammonium nitrate Test	Positive	Positive
Lucas Test	Turbidity obtained after five minutes	Turbidity obtained immediately
Iodoform Test	Positive	Negative

C and D respectively are :

Simplified absorption spectra of three complexes ((i), (ii) and (iii)) of \(\mathrm{Mn^{+}}\) ion are provided below; their \(\lambda_{max}\) values are marked as A, B and C respectively. The correct match between the complexes and their \(\lambda_{max}\) values is

(i) \(\mathrm{[M(NCS)_6]^{(-6+n)}}\)
(ii) \(\mathrm{[MF_6]^{(-6+n)}}\)
(iii) \(\mathrm{[M(NH_3)_6]^{n+}}\)

The correct observation in the following reactions is :

(Sucrose \(\xrightarrow[\text{(Hydrolysis)}]{\text{Glycosidic bond cleavage}}\) A + B \(\xrightarrow{\text{Seliwanoff's reagent}}\) ?)

The major product of the following reaction is :

An organic compound ‘A’ (\(\mathrm{C_9H_{10}O}\)) when treated with conc. HI undergoes cleavage to yield compounds ‘B’ and ‘C’. ‘B’ gives yellow precipitate with \(\mathrm{AgNO_3}\) where as ‘C’ tautomerizes to ‘D’. ‘D’ gives positive iodoform test. ‘A’ could be

Arrange the following labelled hydrogens in decreasing order of acidity :

Consider the reaction sequence given below:

Which of the following statements is true?

The major product obtained from \(\mathrm{E_2}\) - elimination of 3-bromo-2-fluoropentane is

The increasing order of the following compounds towards HCN addition is :

The IUPAC name for the following compound is

Consider the following rections:

'x', 'y' and 'z' in these reactions are respectively.

The major aromatic product C in the following reaction sequence will be :

The figure that is not a direct manifestation of the quantum nature of atoms is :

The major product in the following reaction is :

In Carius method of estimation of halogen, 0.172 g of an organic compound showed presence of 0.08 g of bromine. Which of these is the correct structure of the compound?

Which one of the following graphs is not correct for ideal gas?

d = Density, P = Pressure, T = Temperature

The number of chiral carbons present in the molecule given below is _____ .

Consider the following reactions,

The compound [P] is :

The decreasing order of basicity of the following amines is :

Which of the following reactions will not produce a racemic product?

In the figure shown below reactant A (represented by square) is in equilibrium with product B (represented by circle). The equilibrium constant is :