Aniline is converted into benzene by the following sequence of reactions:


Aniline \(\xrightarrow[0-5^\circC]{NaNO_2/HCl}\) A \(\xrightarrow{H_3PO_2}\) B


The compounds A and B respectively are:

• (A) Benzene diazonium chloride, Benzene
• (B) Nitrobenzene, Benzene
• (C) Benzene diazonium chloride, Phenol
• (D) Chlorobenzene, Benzene

Among the following compounds, the correct order of acidic strength is:


Phenol, p-Nitrophenol, p-Methoxyphenol


(A) p-Methoxyphenol \(>\) Phenol \(>\) p-Nitrophenol

(B) p-Nitrophenol \(>\) Phenol \(>\) p-Methoxyphenol

(C) Phenol \(>\) p-Nitrophenol \(>\) p-Methoxyphenol

(D) p-Nitrophenol \(>\) p-Methoxyphenol \(>\) Phenol

• (A) p-Methoxyphenol \(>\) Phenol \(>\) p-Nitrophenol
• (B) p-Nitrophenol \(>\) Phenol \(>\) p-Methoxyphenol
• (C) Phenol \(>\) p-Nitrophenol \(>\) p-Methoxyphenol
• (D) p-Nitrophenol \(>\) p-Methoxyphenol \(>\) Phenol

The major product formed in the following reaction is:

\(CH_3CH=CH_2 \xrightarrow{HBr, peroxide} ?\)

• (A) \(CH_3CHBrCH_3\)
• (B) \(CH_3CH_2CH_2Br\)
• (C) \(CH_2BrCH=CH_2\)
• (D) \(CH_3CHBrCH_2Br\)

The SI unit of rate constant for a first order reaction is:

• (A) \(mol\,L^{-1}s^{-1}\)
• (B) \(s^{-1}\)
• (C) \(L\,mol^{-1}s^{-1}\)
• (D) \(mol^{-1}L\,s^{-1}\)

Which of the following complexes shows maximum number of unpaired electrons?

• (A) \([Fe(CN)_6]^{4-}\)
• (B) \([FeF_6]^{3-}\)
• (C) \([Co(NH_3)_6]^{3+}\)
• (D) \([Ni(CO)_4]\)

The correct increasing order of basic strength of the following amines/compounds is:

(I) \(C_6H_5NH_2\) (Aniline)

(II) \(NH_3\) (Ammonia)

(III) \(C_6H_5CH_2NH_2\) (Benzylamine)

(IV) \(C_2H_5NH_2\) (Ethylamine)

(V) \((C_2H_5)_2NH\) (Diethylamine)

• (A) \(C_6H_5NH_2 < NH_3 < C_6H_5CH_2NH_2 < C_2H_5NH_2 < (C_2H_5)_2NH\)
• (B) \(NH_3 < C_6H_5NH_2 < C_6H_5CH_2NH_2 < C_2H_5NH_2 < (C_2H_5)_2NH\)
• (C) \(C_6H_5CH_2NH_2 < C_6H_5NH_2 < NH_3 < C_2H_5NH_2 < (C_2H_5)_2NH\)
• (D) \(C_2H_5NH_2 < (C_2H_5)_2NH < C_6H_5NH_2 < NH_3\)

When blood cells are placed in 1% (w/v) NaCl aqueous solution, what will happen to the cells?

• (A) Cell will burst
• (B) Cell will shrink
• (C) Cell will swell
• (D) Cell remains as such

Which of the following solutions is isotonic with human blood?

• (A) 0.1% NaCl solution
• (B) 0.5% NaCl solution
• (C) 0.9% NaCl solution
• (D) 2% NaCl solution

Which of the following compounds will not undergo an Azo coupling reaction?

• (A) Aniline
• (B) Phenol
• (C) Anisole
• (D) Nitrobenzene

Which of the following are fat soluble vitamins?

(A) Vitamin A

(B) Vitamin B

(C) Vitamin D

(D) Vitamin E

(E) Vitamin K

Choose the correct answer from the options given below:

• (A) (A), (B), (D) and (E) only
• (B) (A), (B), (C) and (D) only
• (C) (A), (C), (D) and (E) only
• (D) (B), (C), (D) and (E) only