Home Organic Compounds worksheet Nomenclature of Organic Compound Worksheet

Nomenclature of Organic Compound Worksheet

Nomenclature of Organic Compounds Worksheet

Naming organic compounds is described how to name straight-chain hydrocarbons and their derivatives. (if you aren’t familiar with the systematic nomenclature for those compounds, do that worksheet first, and do this one later.) This worksheet will describe how to name simple cyclic hydrocarbons, aromatic compounds, and organic compounds with common functional groups.

Here, you can find some questions related to “Nomenclature of Organic Compounds” and their answers:

1. The energy of triple bond in acetylene in k.cal is:

(a) 100

(b) 192

(d) 60

2. Which of the following statements is wrong?

(a) The number of organic compounds is very large

(b) In general organic compounds have low rn.pt and B.pt.

(d) Isomerism is common in organic compounds

3. If bond order (number of bonds) increases:

(a) bond energy decreases

(b) bond length increases and bond energy decreases

(d) bond length increases

4. In 2-methyl-1-propanol, the hybrid carbons of $sp^3, sp^2$ and sp are respectively:

(a) 1,2,3

(b) 3,2,1

(d) 4,3,0

5. $A C \equiv C$ bond is:

(a) Weaker than C = C bond

(b) Longer than C – C bond

(d) Shorter than C = C bond

6. Total number of bonds present in $CH_3- CH = CH_2$ is:

(a) Six $\sigma \text{and four} \pi$

(b) Nine $\sigma \text{and two} \pi$

(d) None

7. Generally organic compounds are:

(a) Complexes

(b) Electrovalent

(d) Amorphous

8. Which is an open chain or acyclic compound?

(a) Ethane

(b) Cyclobutane

(d) Furan

9. The minimum number of carbon atoms which a cycloalkane may contain:

(a) 4

(b) 1

(d) 2

10. The compound having both $sp^3 \text{and} sp^2$ bonds is:

(a) isobutane

(b) butadiene

(d) n-butane

11. he number of sp3 hybrid carbons in 2-butyne is:

(a) 3

(b) 1

(d) 4

12. Which of the following is hydrocarbon?

(a) Ammonium cyanate

(b) Benzene

(d) Phenol

13. IUPAC name of $CH_3CHCl_2$ is:

(a) 2, 2-dichloro ethane

(b) Dichloro ethane

(d) 1, 2 dichloro ethane

14. IUPAC name of $CH \equiv C- C (CH_3)_3$ is:

(a) 2-vinyl propane

(b) 1-isopropyl ethane

(d) 2, 2 dime-thyl-3-propyne

15. IUPAC name of $(C_2H_5)_2 CHCH_2OH$ is:

(a) 2-ethyl butanol-1

(b) 2-thyl pentanol-1

(d) 2-methyl pentanol-1

16. Which class of compounds is not reported in I.U.P.A. nomenclature?

(a) Acids

(b) Alcohols

(d) Ketones

17. 3-methyl penta-1, 2-diene is:

(a) $CH_2 = CHCH(CH_3)CH_2CH_3$

(b) $CH_3 = C = CH(CH_3)_2$

(d) $CH_2 = CH(CH_2)_2CH_3$

18. Which group is always taken as substituent in IUPAC nomenclature of compound?

(a) –COOH

(b) – $NH_2$

(d) –CN

19. IUPAC name of

(a) N, N-dimethyl ethanamine

(b) Dimethyl-ethyl amine

(d) None

20. IU PAC name of urea is:

(a) 1-amino ethanamide

(b) Amino acetamide

(d) diamino ketone

21. The correct IUPAC name of $(C_2H_5)_4C$ is:

(a) 2-ethyl pentane

(b) Tetraethyl methane

(d) None of the above

22. IUPAC name of the neopentane is:

(a) 2, 3-dimethyl butane

(b) 2, 2-dimethyl propane‘

(d) iso butane

23. The IUPAC name of wood spirit is:

(a) Ethanal

(b) Methanol

(d) Ethangl

24. The longest chain in the following compound consists,

(a) 5 carbon atoms

(b) 9 carbon atoms

(d) 6 carbon atoms

25. Alkanols are represented by:

(a) $C_nH_{2n}O$

(b) $C_n H_{2n} O_2$

(d) $C_n H_{2n + 2}O$

Answers

1.(b) 2. (c) 3. (c) 4. (c) 5. (d)

6. (c) 7. (c) 8. (a) 9. (c) 10. (c)

11. (c) 12. (b) 13. (c) 14. (c) 15. (a)

16. (c) 17. (c) 18. (c) 19. (a) 20. (c)

21. (c) 22. (b) 23. (b) 24. (d) 25. (d)

Nomenclature of Organic Compound Worksheet

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