Which one of the following has the minimum boiling point?

• n-butane

• isobutane

• 1- butene

• 1- butene

The IUPAC name of the compound

• 3, 3- dimethyl -1- hydroxy cyclohexane

• 1,1 – dimethyl -3- cyclohexanol

• 3,3- dimethyl -1- cyclohexanol

• 3,3- dimethyl -1- cyclohexanol

Which one the following does not have sp² hybridized carbon?

• Acetone

• Acetamide

• Acetonitrile

• Acetonitrile

Which of the following will have meso-isomer also?

• 2- chlorobutane

• 2- hydroxyopanoic acid

• 2,3 – dichloropentane

• 2,3 – dichloropentane

65.

Rate of the reaction



is fastest when Z is

• Cl

• OCOCH₃

• OC₂H₅

• OC₂H₅

Consider the acidity of the carboxylic acids

• PhCOOH

• p – NO₂C₆H₄COOH

• o – NO₂C₆H₄COOH

• o – NO₂C₆H₄COOH

Which of the following is the strongest base?

Which base is present in RNA but not in DNA?

• Uracil

• Thymine

• Guanine

• Guanine

The compound formed on heating chlorobenzene with chloral in the presence concentrated sulphuric acid is

• gammexene

• hexachloroethane

• Freon

• Freon

On mixing ethyl acetate with aqueous sodium chloride, the composition of the resultant solution is

• CH₃COOC₂H₅ + NaCl

• CH₃Cl + C₂H₅COONa

• CH₃COCl + C₂H₅OH + NaOH

• CH₃COCl + C₂H₅OH + NaOH