JEE Mains JEE Advance BITSAT
JEE Mains | PYQ

Year

All years 2026 2025 2024 2023 2022 2021

The decreasing order of hydride affinity for following carbocations is:

Choose the correct answer from the options given below:

Among the following compounds, the one which shows highest dipole moment is:

The total number of chiral compound/s from the following is _________.

A solution of \( \mathrm{FeCl_3} \) when treated with \( \mathrm{K_4[ Fe(CN)_6 ]} \) gives a prussian blue precipitate due to the formation of:

From the figure of column chromatography given below, identify incorrect statements.

A. Compound ‘c’ is more polar than ‘a’ and ‘b’
B. Compound ‘a’ is least polar
C. Compound ‘b’ comes out of the column before ‘c’ and after ‘a’
D. Compound ‘a’ spends more time in the column
Choose the correct answer from the options given below.

The correct IUPAC nomenclature for the following compound is:

Match List I with List II:

List I (Element detected)	List II (Reagent used/Product formed)
A. Nitrogen	I. \( \text{Na}_2[\text{Fe}(\text{CN})_5\text{NO}] \)
B. Sulphur	II. \( \text{AgNO}_3 \)
C. Phosphorous	III. \( \text{Fe}_4[\text{Fe}(\text{CN})_6]_3 \)
D. Halogen	IV. \( (\text{NH}_4)_2\text{MoO}_4 \)

Choose the correc answer from the options given below:

Using column chromatography, mixture of two compounds ‘A’ and ‘B’ was separated. ‘A’ eluted first, this indicates ‘B’ has:

Match List I with List II.

Choose the correct answer from the options given below:

10.

Match column I with column II.

Column I	Column II
I. \( \text{Mg}(\text{NH}_4)\text{PO}_4 \)	\( \text{P}. \) Brown
II. \( \text{K}_3[\text{Co}(\text{NO}_2)_6] \)	\( \text{Q}. \) White
III. \( \text{MnO}(\text{OH})_2 \)	\( \text{R}. \) Yellow
IV. \( \text{Fe}_4[\text{Fe}(\text{CN})_6]_3 \)	\( \text{S}. \) Blue

Choose the correct answer from the options given below:

11.

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Benzene is more stable than hypothetical cyclohexatriene
Reason R: The delocalized \( \pi \) electron cloud is attracted more strongly by nuclei of carbon atoms.
In the light of above statements, choose the most appropriate answer from the options given below:

12.

The isomeric deuterated bromide with molecular formula \( \mathrm{C_4H_8DBr} \) having \( 2 \) chiral carbon atoms is:

13.

Correct statements for the given reaction are:

A. Compound 'B' is aromatic
B. The completion of above reaction is very slow
C. 'A' shows tautomerism
D. The bond lengths of C−C in compound B are found to be same
Choose the correct answer from the options given below:

14.

Thin layer chromatography of a mixture shows the following observation:

The correct order of elution in the silica gel column chromatography is:

15.

Increasing order of stability of the resonance structures is :
I.
II.
III.
IV.

Choose the correct answer from the options given below:

16.

Given below are two statements :
Statement I : Tropolone is an aromatic compound and has \( 8\pi \) electrons.
Statement II : \( \pi \) electrons of \( >\!C=O \) group in tropolone is involved in aromaticity.
In the light of the above statements, choose the correct answer from the options given below :

17.

Which of the following statement is correct for paper chromatography?

← PreviousQuestion 12 of 17Next →

JEE Main 2023 25th Jan Evening Shift

The isomeric deuterated bromide with molecular formula \( \mathrm{C_4H_8DBr} \) having \( 2 \) chiral carbon atoms is:

JEE MainsJEE AdvanceBITSATJEE Mains | PYQ

JEE Mains JEE Advance BITSAT
JEE Mains | PYQ