List of top Chemistry Questions

Conversion of X to Y in the given reaction corresponds to:

Identify the structure of the polymer ‘P’ formed in the given reaction: 

Xenon (VI) fluoride on complete hydrolysis gives an oxide of xenon 'O'. The total number of \( \sigma \) and \( \pi \) bonds in 'O' is:

The number of -OH groups present in the structures of bithionol, terpineol, and chloroxylenol is respectively:

In which of the following ions the spin-only magnetic moment is lowest?

Match the following: 

The standard enthalpy of combustion of C (graphite), H\(_2\) (g) and CH\(_3\)OH (l) respectively are \(-393\), \(-286\) and \(-726\) kJ mol\(^{-1}\). What is the standard enthalpy of formation of methanol?
Lactose is composed of:
Which of the following is used as an insect attractant?
The reagent used for the conversion of but-2-ene to ethanol is:
The major products formed when one mole of \( \text{CH}_3\text{CH}_2\text{CH}(\text{CH}_3)\text{CH}_2\text{OCH}_2\text{CH}_3 \) is treated with one mole of HI are:
A tertiary alkyl halide (X), C\(_4\)H\(_9\)Br, reacted with alc.KOH to give compound (Y). Compound (Y) reacted with HBr in presence of peroxide to give compound (Z). The compounds (Y) and (Z) are respectively:
One mole of an alkene on ozonolysis gives a mixture of one mole pentan-3-one and one mole methanal. The alkene is:
The number of unpaired electrons in \([CoF_6]^{3-}\) is:

The decreasing order of stability of the following carbocations is: 
\( (i) \text{(CH}_3\text{)}_3\text{C}^+ \quad (ii) \text{(CH}_3\text{)}_2\text{C-CH}_2^+ \quad (iii) \text{CH}_3\text{CH}_2\text{-CH}_2^+ \)

The increasing order of acid strength of the following carboxylic acids is: 
\[ (i) \text{(CH}_3\text{)}_3\text{C-COOH} \quad (ii) \text{(CH}_3\text{)}_2\text{CH-COOH} \quad (iii) \text{CH}_3\text{CH}_2\text{COOH} \]

Which of the following is used in the treatment of lead poisoning?
The reaction, \( 2I^- + S_2O_8^{2-} \rightarrow I_2 + 2SO_4^{2-} \), is catalysed by:
The increasing order of field strength of ligands in the spectrochemical series is:
A coordination compound of cobalt acts as an antipericious anemia factor is:
Which of the following mixture forms azeotrope?
The rate law for the reaction, A + B → Product, is: \[ {rate} = [A][B]^{3/2} \] The total order of the reaction is:
The rate constant of a first order reaction is \(4.606 \times 10^{-3} \, {s}^{-1}\). The time taken to reduce 20 g of reactant into 2 g is:
The average oxidation state of sulphur in the tetrathionate ion is:
The quantity of electricity required to produce 18 g of Al from molten Al\(_2\)O\(_3\) is (Atomic mass of Al = 27):