Problem 1
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
Problem 2
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
Problem 3
Optical activity is measured by (a) refractometer (b) tracer technique (c) spectrograph (d) polarimeter
Problem 4
The compound having only primary hydrogen atoms is (a) isobutene (b) 2,3 -dimethyl but- 2 -ene (c) cyclohexane (d) propyne
Problem 5
Which of the following shows geometrical isomerism? (a) but-1-ene (b) but-2-ene (c) 2,3 -dichlorobutane (d) ethene
Problem 7
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) \(\mathrm{CH}_{3} \mathrm{CHO}\)
Problem 8
Number of isomers which can be obtained theoretically from monochlorination of 2 -methylbutane are (a) 2 (b) 3 (c) 4 (d) 5
Problem 9
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
Problem 10
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) \(\mathrm{C}_{2} \mathrm{H}_{2} \mathrm{Br}_{2}\)
Problem 11
How many structural isomers of \(\mathrm{C}_{4} \mathrm{H}_{10} \mathrm{O}\) that are ethers? (a) 1 (b) 2 (c) 3 (d) 4
