41.

One mole of alkene on ozonolysis gives 2 moles of butanone. The alkene is

• 3, 4-dimethylhex-2-ene

• 2, 3-dimethyihex-3-ene

• 3, 4-dimethylhex-3-ene

• 2, 3-dimethylhex-2-ene

The compound that neither forms semicarbazone nor oxime is

• HCHO

• CH₃COCH₃

• CH₃CHO

• CH₃CH₂CH₂NH₂

Isopropylbenzene is oxidized in the presence of air to compound 'A'. When compound 'A' is treated with dilute mineral acid, the aromatic product formed is

• phenol

• benzene

• benzaldehyde

• acetophenone

Positive carbylamine test is shown by

• N, N-dimethylaniline

• triethylamine

• N-methylaniline

• p-methylbenzylamine

How many amino acids are present in insulin?

• 25

• 51

• 20

• 22

The repeating unit present in nylon-6 is

• -[NH(CH₂)₆NHCO(CH₂)₄CO]-

• -[CO(CH₂)₅NH]- or -[CO(CH₂)₆NH]-

• -[CO(CH₂)₄NH]-

• -[NH(CH₂)₄NHCO(CH₂)₆CO]-

Which one of the following is not correct?

• D-(-)-fructose exists in furanose structure

• D-( + )-glucose exists in pyranose structure

• In sucrose the two monosaccharides are held together by peptide linkage

• Maltose ia a reducing sugar

How many times oxyhaemoglobin is less stable than carboxyhaemoglobin?

• 50

• 200

• 500

• 300