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Question Bank No: 1

1. The IUPAC name of the following compound is

a)		Bicyclo [2.1.0]oentane
b)		Cyclopropyl cyclobutane
c)		Bicyclo [4.2.1] pentane
d)		Cyclopentene

2. In iso-octant (2,2-4 trimethylpentane), the number of primary hydrogen atoms is

a)		12
b)		15
c)		13
d)		14

3. Which type of isomerism is shown by 2,3-dichlorobutane?

a)		Structural
b)		Geometric
c)		Optical
d)		Diastereo

4. The general formula $C_{n} H_{2 n} O_{2}$ could be open chain

a)		Diketones
b)		Carboxylic acids
c)		diols
d)		dialdehydes

5. The IUPAC name of ${CH}_{3} COCH ({CH}_{3})_{2}$ is

a)		Isopropyl methyl Ketone
b)		2-methyl-3-butanone
c)		4-methylisopropyl Ketone
d)		3-methyl-2-butanone

6. Which of the following carbocations is the most stable?

a)		Methyl
b)		Ethyl
c)		tert-Butyl
d)		sec-Butyl

7. Which of the following groups is always taken as a substituent in the nomenclature?

a)		$- N H_{2}$
b)		$- CN$
c)		$- CHO$
d)		$- N O_{2}$

8. Which of the following species has minimum H $- C - H$ bond angle?

a)		Methane
b)		Methyl carbocation
c)		Methyl carbanion
d)		Methyl free radical

9. Which of the following free radicals is the most stable?

a)		Methyl
b)		iso-propyl
c)		Vinyl
d)		Allyl

10. In the compound, ${CH}_{2} = CH - {CH}_{2} - {CH}_{2} - C \equiv CH,$ the $C_{2} - C_{3}$ bond is of the type

a)		Sp $- {sp}^{2}$
b)		${sp}^{3} - {sp}^{3}$
c)		sp $- {sp}^{3}$
d)		${sp}^{2} - {sp}^{3}$

11. Which of the following is an electrophile?

a)		$H_{2} O$
b)		${NH}_{3}$
c)		ALC $L_{3}$
d)		$C_{2} H_{5} N H_{2}$

12. IUPAC name of ${CH}_{3} CH = CH - C = CH$ is

a)		Pent-3-en-1-yne
b)		Pent-2-en-4-yne
c)		Pent-3-yn-1-ene
d)		Pent-2-yn-1-ene

13. In Which of the compounds given below is there more than one kind of hybridization (sp, ${sp}^{2}, {sp}^{3})$ for carbon?
(I) ${CH}_{3} {CH}_{2} {CH}_{2} {CH}_{3}$ (II) ${CH}_{3} - CH = CH - {CH}_{3}$ (III) ${CH}_{2} = CH - CH = {CH}_{2}$ (IV) H $- C \equiv C - H$

a)		II and IV
b)		I and IV
c)		II and III
d)		II

14. In which of the following compounds, carbon uses ${sp}^{3}$ hybrid orbitals only for bonding?

a)		HCOOH
b)		${CH}_{3} CHO$
c)		${(CH}_{3})_{3} COH$
d)		( ${NH}_{2})_{2} CO$

15. Which of the following alkanes has neither secondary nor tertiary hydrogens?

a)		Iso-Butane
b)		iso-Pentane
c)		Pentane
d)		neo-Pentane

16. The C-H bond length is maximum in

a)		$C_{2} H_{2}$
b)		$C_{2} H_{6}$
c)		$C_{6} H_{6}$
d)		$C_{2} H_{4}$

17. The number of $π$ electrons in anthracene is

a)		6
b)		10
c)		12
d)		14

18. Which of the following compounds contain maximum number of tertiart hydrogen atoms?

a)		N-Hexane
b)		2-2 Dimethylbutane
c)		2,3-Dimethylbutane
d)		2-Methylpentane

19. Which of the following is the functional isomer of methyl acetate?

a)		Ethyl acetate
b)		propanoic acid
c)		Ethyl formate
d)		Propanone

20. The first organic compound was synthesized in laboratory by

a)		wohler
b)		Kolbe
c)		Berzelius
d)		Neil bartlett

21. IUPAC name of ${Na}_{3} [Co {(N O_{2})}_{6}]$ is

a)		sodium cobaltinitrite
b)		sodium hexanitritocobaltate (III)
c)		sodium hexanitrocobalt (III)
d)		sodium hexabitrocobaltate (III)