Chemistry

How will you convert ethanal into the following compounds?

(i) Butane-1,3-diol

(ii) But-2-enal

(iii) But-2-enoic acid

Hydrogen peroxide is obtained by the electrolysis of _______.

(i) Water

(ii) Sulphuric acid

(iii) Hydrochloric acid

(iv) Fused sodium peroxide

When sodium peroxide is treated with dilute sulphuric acid, we get

(i) Sodium sulphate and water

(ii) Sodium sulphate and oxygen

(iii) Sodium sulphate, hydrogen and oxygen

(iv) Sodium sulphate and hydrogen peroxide

Which of the following reactions increases production of Dihydrogen from synthesis gas?

(i) CH₄(g)+H₂O(g) → CO(g)+3H₂(g)

(ii)  C(g)+H₂O(g) → CO(g)+H₂(g)

(iii) CO(g)+H₂O(g) → CO₂(g)+H₂(g)

(iv) C₂H₆+2H₂O → 2CO+5H₂O

Which of the following compounds would undergo aldol condensation, which the Cannizzaro reaction and which neither? Write the structures of the expected products of aldol condensation and Cannizzaro reaction.

(i) Methanal

(ii) 2-Methylpentanal

(iii) Benzaldehyde

(iv) Benzophenone

(v) Cyclohexanone

(vi) 1-Phenylpropanone

(vii) Phenylacetaldehyde

(viii) Butan-1-ol

(ix) 2,2-Dimethylbutanal 

Predict the products formed when cyclohexanecarbaldehyde reacts with following reagents.

(i) PhMgBr and then H3O+

(ii) Tollens' reagent

(iii) Semicarbazide and weak acid

(iv) Excess ethanol and acid

(v) Zinc amalgam and dilute hydrochloric acid 

Draw structures of the following derivatives.

(i) The 2,4-dinitrophenylhydrazone of benzaldehyde

(ii) Cyclopropanone oxime

(iii) Acetaldehydedimethylacetal

(iv) The semicarbazone of cyclobutanone

(v) The ethylene ketal of hexan-3-one

(vi) The methyl hemiacetal of formaldehyde

Write the IUPAC names of the following ketones and aldehydes. Wherever possible, give also common names.

(i) CH₃CO(CH₂ )₄CH₃

(ii) CH₃CH₂CHBrCH₂CH(CH₃ )CHO

(iii) CH₃ (CH₂ )₅CHO

(iv) Ph-CH=CH-CHO

(v)

(vi) PhCOPh 

Draw the structures of the following compounds.

(i) 3-Methylbutanal

(ii) p-Nitropropiophenone

(iii) p-Methylbenzaldehyde

(iv) 4-Methylpent-3-en-2-one

(v) 4-Chloropentan-2-one

(vi) 3-Bromo-4-phenylpentanoic acid

(vii) p,p'-Dihydroxybenzophenone

(viii) Hex-2-en-4-ynoic acid