What is action of nitrous acid on 1°, 2° and 3°amines? OR
What will be the action of the mixture of sodium nitrite and dilute Hydrochloric acid on (i) ethyl amine (ii)aniline (iii)Methylamine (Oct. 14) OR
Write the reaction of (i) aromatic and (ii) aliphatic amine with nitrous acid.

Give distinguishing test between primary, secondary and tertiary amines with nitrous acid. OR What is the action of mixture of NaNO_2 and dil HCl on (a) Ethylamine (b) Aniline ( c) Diethylamine.

What is the action of hydrochloric acid on the following :- Na_2CO_3

Give the distinguishable reaction between 1^@,2^@,3^2 , amine with nitrous acid. OR What is the action of acetic anhydride on (a) Eethylamine (b) Diethylamine.

Write the structure of all the isomeric amines represented by formula C_5H_(13)N that evolve nitrogen gas on treatment with sodium nitrite and dilute hydrochloride acid.

Give distingusihable reactin between 1^@,2^@ and 3^@ amine by Hisberg's test. OR What is the action of Benzene Sulphonyl Chloride on primary, secondary and teritiary amines.

Write a note on electrophilic substitution reaction of amines OR convert (1) Aniline to p-bromo aniline. (2) Aniline to p-nitroaniline (3) Aniline to sulphanilic acid OR What is the action of following agents on aniline? 1 Conc H_2SO_4 (2) Aqueous bromine (3) Acetic anhydride (4) Chloroform and alcoholic KOH.

Information about protein synthesis is stored in the DNA. Proteins are synthesized by DNA through RNA. This is also known as the central dogma of life. The nucleotide sequences of the mRNA produced are complementary to the DNA strand that is uded as the template for synthesis. This process of synthesis of RNA from DNA is known as transcription. The code for each amino acid consists of three nucleotides (triplet codon) that are present on the mRNA. The tRNA has an anticodon sequence complementary to the cofon on the mRNA. During translation, the code on mRNA is read nad respective amino acids brought by tRNA are joined together by peptide bonds. Based on the given paragraph, answer the followig question: i. If 3'-AACGT-5' is a sequence of the template DNA strand, what would be the nucleotide sequence of the corresponding mRNA synthesized from it? ii. What is the difference in nitrogeneous bases of DNA and RNA? iii. Which enzyme woud be required for the synthesis of RNA from DNA during transcription? iv. How many amino acids can the following mRNA sequence code for ? 5'-UUCAGCCGUGUCAUU-3' v. What is the function of mRNA in translation?

Arrange the following compounds in decreasing order of acid strength. (i) CH_3-CH_2-OH (ii) (CH_3)_3COH (iii) C_6H_6OH (iv) P-NO_2C_6H_4OH.