List of top Chemistry Questions

Describe a method for the identification of primary, secondary and tertiary amines. Also write chemical equations of the reactions involved.

$FeSO_4$ solution mixed with$ (NH_4)_2SO_4 $ solution in$ 1:1$ molar ratio gives the test of $Fe^{2+}$ ion but $CuSO_4$ solution mixed with aqueous ammonia in $ 1:4 $ molar ratio does not give the test of $Cu^{2+}$ ion. Explain why?

Explain the bonding in coordination compounds in terms of Werner’s postulates.

Write IUPAC names of the following compounds and classify them into primary, secondary and tertiary amines.

(i) (CH3 )2CHNH2 (ii) CH3 (CH2 )2NH2 (iii) CH3NHCH(CH3 )2

(iv) (CH3 )3CNH2 (v) C6H5NHCH3 (vi) (CH3CH2 )2NCH3 (vii) m–BrC6H4NH2

Which one of the following is tridentate ligand?

Laughing gas is prepared by heating

Number of oxalic acid molecules in $100\, mL$ of $0.02\, N$ oxalic acid are

Which of the following is an antihistamine drug?

Cyclopentadienyl anion is aromatic in nature. Cyclopentadienyl anion has six $\pi$ electrons.

Rusting of iron is catalysed by

An alkyl halide reacts with metallic sodium in dry ether. The reaction is known as :

Vicinal and geminal dihalides can be distinguished by

What is the velocity of electron present in first Bohr orbit of hydrogen atom?

In a reaction $2 A+B \longrightarrow 3 C$, the concentration of $A$ decreases from $0.5\, mol \,L \,^{-1}$ to $0.3\, mol\, L^{-1}$ in $10$ minutes. The rate of production of $C$ during this period is

The bond length of HCl molecule is $1.275 \, ?$ and its dipole moment is 1.03 D. The ionic character of the molecule (in percent) (charge of electron $4.8 \times 10^{-10}$ esu) is

All are primary pollutants except

Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?

What process is used to make soap from fat?

F-centres in an ionic crystal are

How many oxygen atoms will be present in $88\, g$ of $CO_2$

If $(1+\frac{1}{x})^{\frac{1}{2}}$ $v_{av} = v_{rms}$, then x is:

The pH value of N/10 NaOH is

Which of the following gives maximum energy in metabolic process?

$[Fe(CN)_6 ]^{3-}$ ion is

Fluorine molecule is formed by