List of top Chemistry Questions

Highest oxidation numbers for chromium and manganese:

What is the bond order for diatomic carbon according to molecular orbital theory?

Which compound’s common name is cumene?

Rank elements Li, Be, B, C in increasing first ionization energy:

Choose the correct ascending order of ionization energy for Zn, Cu, Ag:

Evaluate these statements about transition metals:

Match each type of reduction to its reagent:

For a proton and electron both with the same kinetic energy, what is the ratio of their de Broglie wavelengths?

If the rate constant is measured in per second, which reaction order does this indicate?

Which statement correctly contrasts Clemmensen and Wolff-Kishner reductions?

Why is there always a decreasing tendency of solubility of gases in liquid on rising temperature?

The total maximum number of electrons possible in 3d, 6d, 5s and 4f orbitals with \(m_l\) (magnetic quantum number) value -2 is

What is the action of : (i) Liquid bromine in acetic acid on anisole. (ii) Soda-lime on sodium acetate?

Write short notes on the following:
(i) Carbylamine reaction
(ii) Hofmann–bromamide reaction
(iii) Diazotisation

Account for the following: (a) The dipole moment of chlorobenzene is lower than that of cyclohexylchloride.

Write structures of the following compounds: (i) 2-Chloro-3-methylpentane
(ii) 1,4-dibromobut-2-ene
(iii) 1-Bromo-2,2-dimethylpropane
(iv) 1-Bromo-2-methylbut-2-ene
(v) 1-Chloro-2-methylbenzene

What do you understand by these following terms? Give one example of each.
(i) Aldol (ii) Schiff's base (iii) Cannizaro's reaction (iv) Oxime (v) Acetal

How can these conversions be done? Give chemical equations only.
(i) Propan-2-ol from propene (ii) Benzyl alcohol from benzyl chloride (iii) Propan-1-ol from ethyl magnesium chloride (iv) 2-methyl propan-2-ol from methyl magnesium bromide (v) Picric acid from phenol

Based on the data given above, give plausible reason for the variation of conductivity and molar conductivity with concentration.

Concentration of KCl solution (mol/L)	Conductivity at 298.15 K (S cm^-1)	Molar Conductivity at 298.15 K (S cm² mol^-1)
1.000	0.1113	111.3
0.100	0.0129	129.0
0.010	0.00141	141.0

The correct IUPAC name for \( CH_2 = CHCH_2NHCH_3 \) is:

How many coulombs of electricity is required to produce 1g of sodium metal by reduction of sodium ion?

The element that has the highest melting point in the 3d series is:

Explain optical activity, chirality, retention, inversion and racemisation in Haloalkane.

Identify the compound which is least reactive towards nucleophilic substitution reactions.

Derive the relation between half life and rate constant for a first order reaction.