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The IUPAC name of \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COCl}\) is (a) benzoyl chloride (b) benzene chloroketone (c) benzene carbonyl chloride (d) chlorophenyl ketone

In the reaction, \(\mathrm{CH}_{3} \mathrm{CHO}+\mathrm{HCN} \longrightarrow \mathrm{CH}_{3} \mathrm{CH}(\mathrm{OH}) \mathrm{CN}\) a chiral centre is produced. This product would be (a) racemic mixture (b) meso compound (c) dextrorotatory (d) laevorotatory

Optical activity is measured by (a) refractometer (b) tracer technique (c) spectrograph (d) polarimeter

The compound having only primary hydrogen atoms is (a) isobutene (b) 2,3 -dimethyl but-2-ene (c) cyclohexane (d) propyne

Which of the following shows geometrical isomerism? (a) but-1-ene (b) but-2-ene (c) 2,3 -dichlorobutane (d) ethene

The number of optically active isomers of tartaric acid is CC(O)C(=O)O (a) 2 (b) 3 (c) 4 (d) 1

The compound in which \(\mathrm{C}\) uses only its \(\mathrm{sp}^{3}\) hybrid orbitals for bond formation is (a) \(\mathrm{HCOOH}\) (b) \(\left(\mathrm{NH}_{2}\right)_{2} \mathrm{CO}\) (c) \(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{COH}\) (d) \(\mathrm{CH}_{3} \mathrm{CHO}\)

Number of isomers which can be obtained theoretically from monochlorination of 2 -methylbutane are (a) 2 (b) 3 (c) 4 (d) 5

An organic molecule necessarily shows optical activity if it (a) is non-superimposable on its mirror image (b) is superimposable on its mirror image (c) contains asymmetric carbon atoms (d) is non-polar

The C-H bond distance is longest in (a) \(\mathrm{C}_{2} \mathrm{H}_{2}\) (b) \(\mathrm{C}_{2} \mathrm{H}_{4}\) (c) \(\mathrm{C}_{2} \mathrm{H}_{6}\) (d) \(\mathrm{C}_{2} \mathrm{H}_{2} \mathrm{Br}_{2}\)