NEB Question Browser

Give an example of following chemical reactions.

a) Diazotization

b) Perkin Condensation

c) Reimer–Tiemann reaction

d) Esterification

e) Dow’s process

Differentiate between ionic product and solubility product.

Given that Ksp for BaSO₄ is 1 × 10⁻¹⁰, will the precipitate form when:

i) Equal volumes of 2 × 10⁻³ M BaCl₂ solution and 2 × 10⁻⁴ M Na₂SO₄ solution are mixed.

ii) Equal volumes of 2 × 10⁻⁸ M BaCl₂ solution and 2 × 10⁻³ M Na₂SO₄ solution are mixed.

What happens when ethanal reacts with:

a) 2,4-DNPH (2,4-dinitrophenyl hydrazine)

b) HCN

c) Tollens’ reagent

Write any two differences between antipyretic and analgesic drugs.

Identify Z in the following reaction.

What does the conc. HNO₃ act during the nitration of benzene?

Find the resulting normality of mixture.

What is meant by decinormal solution?

Which of the following reagent converts carboxylic acid to anhydride?

Convert ethanoic acid into methanoic acid.

Give one example each for natural and synthetic polymer.

Which of the following is the correct order of boiling point of following compounds?

A. CH₃CHO
B. C₂H₅OH
C. CH₃COOH

Draw the flow sheet diagram for the manufacture of Portland cement.

Give the chemical reaction for the preparation of phenol from chlorobenzene.

Define order of reaction.

Define radioactivity and write its unit.

Convert the compound B into pseudonitrol.

How is the functional isomer of B prepared by William’s synthesis?

How is ethanoic acid prepared from the following compounds?

i. CH₃MgBr  ii. CH₃CN  iii. CH₃ONa