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#	Question	Subject and topic	Difficulty
2201	Which method gives only primary aliphatic amines, free from 2° and 3° amines?	Chemistry Preparation and properties	Easy
2202	Which is the strongest base in aqueous solution?	Chemistry Preparation and properties	Medium
2203	What mass of methanamine (molar mass 31 g mol⁻¹) is formed from 5.9 g of ethanamide (molar mass 59 g mol⁻¹) b…	Chemistry Preparation and properties	Medium
2204	An amine reacts with benzenesulphonyl chloride to give a product that is insoluble in aqueous KOH. What kind …	Chemistry Preparation and properties	Hard
2205	At what temperature range is aniline usually diazotised?	Chemistry Diazonium salts	Easy
2206	Which reagent converts benzenediazonium chloride into iodobenzene?	Chemistry Diazonium salts	Easy
2207	Which product is formed when benzenediazonium chloride is treated with H₃PO₂?	Chemistry Diazonium salts	Medium
2208	What is formed when benzenediazonium chloride reacts with phenol in alkaline medium?	Chemistry Diazonium salts	Medium
2209	Which sequence is best for preparing fluorobenzene from aniline?	Chemistry Diazonium salts	Hard
2210	Which of these is a non-reducing sugar?	Chemistry Carbohydrates	Easy
2211	Which polysaccharide is called animal starch?	Chemistry Carbohydrates	Easy
2212	Prolonged heating of glucose with HI gives n-hexane. What does this show?	Chemistry Carbohydrates	Medium
2213	What is the molar mass of glucose pentaacetate, formed when all five –OH groups of glucose (180 g mol⁻¹) are …	Chemistry Carbohydrates	Medium
2214	34.2 g of sucrose (342 g mol⁻¹) is completely hydrolysed. What mass of glucose is formed?	Chemistry Carbohydrates	Hard
2215	Which amino acid is optically inactive?	Chemistry Amino acids and proteins	Easy
2216	How many peptide bonds are present in a pentapeptide?	Chemistry Amino acids and proteins	Easy
2217	Which level of protein structure is NOT affected when egg white is boiled?	Chemistry Amino acids and proteins	Medium
2218	How many different tripeptides can be made from glycine, alanine and valine if each is used exactly once?	Chemistry Amino acids and proteins	Medium
2219	What holds the α-helix of a protein in shape?	Chemistry Amino acids and proteins	Hard
2220	Most enzymes are chemically which type of substance?	Chemistry Enzymes	Easy