Predict the product (B) in the following sequence of reactions

Ethyl benzene $\stackrel{{\mathrm{KMnO}}_4/ \mathrm{KOH}}{\to }$ A $\stackrel{{\mathrm{H}}_3{\mathrm{O}}^{+}}{\to }$ B

• Benzaldehyde

• Benzoic acid

• Benzophenone

• Acetophenone

Which one of the following can be prepared by Gabriel phthalimide synthesis?

• Aniline

• o- toluidine

• Benzylamine

• N-methylethanamine

43.

4-nitrotoluene is treated with bromine to get compound 'P' which is reduced with Sn and HCl to get compound 'Q'. 'Q' is diazotised and the product is treated with phosphinic acid to get compound 'R'. 'R' is oxidised with alkaline solution KMnO₄ to get the final product. Identify the final product.

• 2-bromobenzoic acid

• 2-bromo-4-hydroxybenzoic acid

• benzoic acid

• 3-bromobenzoic acid

Narcotic analgesic is

• aspirin

• paracetamol

• codeine

• zantac

In double strand helix structure of DNA, heterocyclic base cytosine forms hydrogen bond with

• Adenine

• Guanine

• Purine

• Uracil

The amino acid containing mercaptan unit is 

• leucine

• glutamine

• cysteine

• lysine

Which one of the following is a non-reducing sugar?

• Maltose

• Lactose

• Sucrose

• Glucose

0ne mole of hydrazine (N₂H₄) loses 10 moles of electrons in a reaction to form a new compound X. Assuming that all the nitrogen atoms in hydrazine appear in the new compound, what is the oxidation state of nitrogen in X? (Note - There is no change in the oxidation state of hydrogen in the reaction).

• -1

• -3

• +3

• +5