List of top Chemistry Questions

Identify the mineral of aluminium from following.

Identify the compound A and B in the following reaction.
\[ \text{CH}_3\text{Cl} + \text{KCN (alc)} \xrightarrow{\Delta} A + 2\text{H}_2\text{O} + \text{HCl} \rightarrow B + \text{NH}_4\text{Cl} \]

Which of the following phenols is isolated from defensive secretion of grasshopper species?

The half life of a first order reaction is 6.0 hours. How long will it take for the concentration of reactant to decrease from 0.4 M to 0.12 M?

Identify the formula of potassium trioxalato aluminate (III).

Which following pair of elements does NOT represent chemical twins?

Sulphapyridine is a/an

Electrophoresis is used .......

What is the molecular formula of glyceraldehyde?

Which among the following is used as a fumigant pesticide for strawberries?

The H-N-H bond angle in NH\(_3\) molecule is

In which of the following molecules, 2\(\pi\) bonds are present?

Which from the following compounds does NOT contain phantom atom?

Nickel crystallises in a fcc type of unit cell, with edge length 0.3524 nm. Calculate the radius of the nickel atom.

Which among the following complexes is a homoleptic and cationic in nature?

Mole fraction of solute in its 2 molal aqueous solution is

The product obtained when 2-methylpropan-2-ol is treated with alumina at 423 K is

Which of the following compounds has the highest boiling point?

Which among the following is a use of 2, 4-dichlorophenoxy acetic acid?

Which among the following lanthanoids has the smallest atomic size?

Concentrated H\(_2\)SO\(_4\) reacts with PCl\(_5\) to produce

For the first order reaction A → B, the rate constant is 0.25 s\(^{-1}\), if the concentration of A is reduced to half, the value of the rate constant will be

What is the oxidation state of As in H\(_3\)AsO\(_4\)?

Which statement about aspirin is NOT true?

Identify product B in the following reaction.