List of top Chemistry Questions

The kinetic of the reaction 2N2O5 ⇾ 4 NO2 + O2 in liquid bromine medium was measured independently for the three different initial concentrations of N2O: 0.11,0.07 and 0.05 mol L-1 .The half - life of the reaction was found to be 4.5 hours for all these concentrations. The order of the reaction is

Calculate the magnetic moment of a divalent ion in aqueous medium if its atomic number is 25

What is the colour change occurring while the conversion of Fe2+⟶ to Fe3+ using KMnO4?

Which one of the following products is obtained on treatment of aniline with nitrous acid?

Fluorine differs from other halogens in some of its properties. This is due to

Clemmensen reduction takes place in the presence of

Which of the following will not give test for Cl- with AgNO3(aq) at 250C?

Which one of the following elements is found in the free state in nature?

What is the total no. of rare earth metals:

RNA lacks the nitrogen base of

A precipitate is formed if the ionic product is __________?

The specific conductance of 0.01 M aqueous solution of acetic acid is 1. 63 x10-2 S m-1 and the molar conductance at infinite dilution is 390.7x10-4 S m2 mol-1.Calculate the degree of dissociation of the acetic acid solution?

Earth’s atmosphere is richest in

Identify the product of the following reaction:

Example of an ambident nucleophile is

Electrophilic halogenation of phenol does not require catalyst because

During the adsorption of gas on the surface of solid, which of the following is true?

Amino acids generally exist in the form of Zwitter ions.

The hybridization of nitrogen in diethyl amine is

Which of the following statement is true for aqueous solution of 0.1 M urea, 0.2 M glucose nad 0.3 M sucrose

When the valence d orbitals of the central metal ion in tetrahedral complex are split in energy levels in CFT, which orbitals are raised to higher energy?

How many enolizable hydrogens are there in the compound 2-methylcyclohex-2- en -1 -one?

Following reaction can produce three products. The order of their amount is

A weak acid with pKa 5.9 and weak base with pKb 5.8 are mixed in equal proportions. pH of the resulting solution is
The conductivity of centimolar solution of KCI at 25°C is 0.0210 ohm-1cm-1 and the resistance of the cell containing the solution at 25°C is 60 ohm. The value of the cell constant is :