Give one good chemical test to distinguish between the following pairs of organic compounds:
(i) Benzaldehyde and acetone.
(ii) Methylamine and dimethylamine.
i) Benzaldehyde gives the tollen test but acetone does not give this test.
(ii) Carbylamine test will be given by 1° Amine i.e. methylamine, not by dimethyl amine.
An organic compound A with molecular formula C2H7N on reaction with nitrous acid gives a compound B. B on controlled oxidation gives compound C. C reduces Tollen’s reagent to give silver mirror and D. B reacts with D in the presence of concentrated sulphuric acid to give sweet smelling compound E. Identify A, B, C, D and E. Give the reaction of C with ammonia.
Give balanced equations for the following reactions:
(i) Acetaldehyde is heated with hydroiodic acid in the presence of red phosphorous.
(ii) Calcium acetate is subjected to dry distillation.
(iii) Sodium ethoxide is treated with ethyl bromide.
(iv) Benzaldehyde is treated with sodium bisulphite.
An organic compound A with molecular formula C7H8 on oxidation by chromylchloride in the presence of CCl4 gives a compound B which gives positive tollen’s test. The compound B on treatment with NaOH followed by acid hydrolysis gives two products C and D. C on oxidation gives B which on further oxidation gives D. The compound D on distillation with soda lime gives a hydrocarbon E. Below 60oC, concentrated nitric acid reacts with E in the presence of concentrated sulphuric acid forming a compound F. Identify the compounds A, B, C, D, E and F.
Give one good chemical test to distinguish between the following pairs of organic compounds:
(i) Benzaldehyde and acetone.
(ii) Methylamine and dimethylamine.
An organic compound A has the molecular formula of C7H6O. When A is treated with NaOH followed by acid hydrolysis, it gives two products, B and C. When B is oxidised, it given A, When A and C are each treated separately with PC15, they give two different organic products D and E.
(i) Identify A to E.
(ii) Give the chemical reaction A is treated with NaOH and name the reaction.
Complete the following statements by selecting the correct alternative from the choices given:
The product formed when aniline is warmed with chloroform and caustic potash is:
Give balanced equations for the following reactions:
(i) Benzaldehyde treated with hydrogen cyanide.
(ii) Chlorine is passed through diethyl ether.
(iii) Benzoic acid solution is treated with sodium carbonate.
How will you bring about the following conversions :
(i) Acetaldehyde to acetamide.
(ii) Phenol to benzoic acid
(iii) Glucose to saccharic acid.
Mock Test Series
