List of top Chemistry Questions

Identify the compound A and B in the following reaction.
\[ \text{CH}_3\text{Cl} + \text{KCN (alc)} \xrightarrow{\Delta} A + 2\text{H}_2\text{O} + \text{HCl} \rightarrow B + \text{NH}_4\text{Cl} \]
Identify the mineral of aluminium from following.
In an isothermal and reversible process, \(1.6 \times 10^{-2}\) kg O\(_2\) expands from 10 dm\(^3\) to 100 dm\(^3\) at 300 K, work done in the process is (R = 8.314 J/mol·K)
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?
Sulphapyridine is a/an
Electrophoresis is used .......
Which among the following is used as a fumigant pesticide for strawberries?
What is the molecular formula of glyceraldehyde?
Which following pair of elements does NOT represent chemical twins?
Which among the following complexes is a homoleptic and cationic in nature?
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.
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 among the following is a use of 2, 4-dichlorophenoxy acetic acid?
Which of the following compounds has the highest boiling point?
Which among the following lanthanoids has the smallest atomic size?
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
Concentrated H\(_2\)SO\(_4\) reacts with PCl\(_5\) to produce
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.