List of top Chemistry Questions

One of the reactions A, B, C, D given below yields a product which will not answer Hinsberg's test when reacted with Benzene sulphonyl chloride. Identify the reaction.

A compound having molecular formula $ C_4H_{11}N $, reacts with $ \text{CHCl}_3 $ in alcoholic KOH, on heating, to form a compound with a foul smell. Identify the optically active isomer of the compound which also shows the above reaction.

With reference to Pauling's Electronegativity scale, which one of the following options shows the correct order of electronegativity values of elements?

Match the names of reactions given in Column I with the appropriate reactions given in Column II

What is the wave number (Units cm$^{-1}$) of the longest wavelength transition in the Balmer series of the Hydrogen spectrum? $ Z = 1 $ for $ H $

Based on Valence Bond Theory, match the complexes listed in Column I with the number of unpaired electrons on the central metal ion, given in Column II.

Two statements, Assertion and Reason are given. Choose the correct option from the following.
Assertion: In the secondary structure of RNA, double helix structure is formed.
Reason: In the double structure of RNA, two nucleic acid chains are wound about each other and held together by hydrogen bonds between pairs of bases.

Identify the correct statement regarding corrosion of iron rod left exposed to atmosphere.

Identify the final product formed when Benzamide undergoes the following reactions:

For a given reaction, $ X(g) + Y(g) \to Z(g) $, the order of reaction with respect to $ X $ and $ Y $ are $ m $ and $ n $ respectively. If the concentration of $ X $ is tripled and that of $ Y $ is decreased to one third, what is the ratio between the new rate to the original rate of the reaction?

Identify the end-product $ [D] $ formed when solution salicylate undergoes the following series of reactions.

At 700 K, the Equilibrium constant value for the formation of HI from $ H_2 $ and $ I_2 $ is 49.0. 0.7 mole of HI(g) is present at equilibrium. What will be the concentrations of $ H_2 $ and $ I_2 $ gases if we initially started with HI(g) and allowed the reaction to reach equilibrium at the same temperature?

Given are 4 statements related to the chemical properties of Glucose. Identify the two incorrect statements from the following.

Which of the following pairs of ions will have same spin only magnetic moment values within the pair?
A. Zn²⁺, Ti²⁺
B. Cr²⁺, Fe²⁺
C. Ti³⁺, Cu²⁺
D. V²⁺, Cu⁺
Choose the correct answer from the options given below:

For the reaction in equilibrium:
N₂(g) + 3H₂(g) ⇌ 2NH₃(g), ΔH = -Q
Reaction is favoured in forward direction by:

From the following select the one which is not an example of corrosion.

Identify the incorrect statement from the following:

Which of the following set of ions act as oxidising agents?

Match List-I with List-II :

List - I(Block/group in periodic table)	List - II(Element)
(A) Lanthanoid	(I) Ce
(B) d-block element	(II) As
(C) p-block element	(III) Cs
(D) s-block element	(IV) Mn

Identify the correct answer from the options given below :

Match List-I with List-II :

List - I(Atom/Molecule)	List - II(Property)
(A) Nitrogen atom	(I) Paramagnetic
(B) Fluorine molecule	(II) Most reactive element in group 18
(C) Oxygen molecule	(III) Element with highest ionisation enthalpy in group 15
(D) Xenon atom	(IV) Strongest oxidising agent

Identify the correct answer from the options given below :

Baeyer’s reagent is :