Quiz 24

Question 1

1. Which of the following is an isomer of heptane?

3-ethylpentane

2-methyloctane

2-methylheptane

Methylcyclohexane

Answer 1

3-ethylpentane

Question 2

2. How many different isomers of pentane are there?

only one

three

four

five

Answer 2

three

Question 3

3. Aldehydes maybe prepared by oxidizing

primary alcohols

secondary alcohols

tertiary alcohols

ketones

Answer 3

primary alcohols

Question 4

4. Name the group of compounds with the general formula RCOOR’.

ether

ester

ketones

aldehydes

Answer 4

ester

Question 5

5. Name the compound : CH3CH2CHO

2-propanol

propanal

butanone

2-butene

Answer 5

propanal

Question 6

6. Name the compound (C6H5)2NH

diphenylamine

ethyl acetate

butyl alcohol

ether

Answer 6

diphenylamine

Question 7

7. What compound among the alcohols contains the fewest possible carbon atom?

ethanol

methanol

propanol

butanol

Answer 7

methanol

Question 8

8. Name the compound HCO2H

methyl formate

acetone

dimethyl ether

formic acid

Answer 8

formic acid

Question 9

9. A carbonyl compound is

One carbon and one oxygen bounded by a double bond.

One carbon and one oxygen bounded by a single bond.

One carbon and two oxygen bounded by one single and one double bond.

One carbon and two oxygen bounded by two double bonds.

Answer 9

One carbon and one oxygen bounded by a double bond.

Question 10

10. Esterification is the reaction of carboxylic acid with

water

alkyl halide

alcohol

ammonia

Answer 10

alcohol

Question 11

11. An isomer of ethanol is

Methanol

ethylene glycol

dimethyl ether

acetone

Answer 11

dimethyl ether

Question 12

12. Which has the most number of carbon atoms; trichloromethane, dichloromethane, chloromethane?

trichloromethane

dichloromethane

chloromethane

all the same

Answer 12

all the same

Question 13

13. How many carbon atoms are there in 2-bromo-2-pentene?

6

5

4

3

Answer 13

5

Question 14

14. A compound which has a bond formed by the overlap of sp-sp3 hybrid orbital is:

HC = CH

CH3 – C ≡ CH

CH3 – CH = CH2

H2C = C = CH2

Answer 14

CH3 – C ≡ CH

Question 15

15. A reaction in which the elements of water are eliminated from a molecule.

hydrolysis

dehydration

dehydrogenation

hydrogenation

Answer 15

dehydration

Question 16

16. It is an addition reaction initiated by an electron-deficient species.

electrophilic

nucleophilic

carbionic

reversible

Answer 16

electrophilic

Question 17

17. Which of the following is a saturated hydrocarbon?

alkane

alkene

alkyne

alkadiene

Answer 17

alkane

Question 18

18. Name : CH3 CHCl CH3

2-chloropropane

1-chloropropane

2-chlorobutane

1-chlorobutane

Answer 18

2-chloropropane

Question 19

19. Which of the following has the highest boiling point?

hexane

octane

decane

eicosane

Answer 19

eicosane

Question 20

20. In the fractional distillation of crude petroleum, gasoline is the fraction whose number of carbon in a molecule ranges from _____.

C1-C4

C5-C10

C11-C18

C15-C18

Answer 20

C5-C10

Question 21

21. What fraction of crude petroleum has 20 or more carbon atoms in a molecule?

kerosene

gas-oil

wax

residue

Answer 21

wax

Question 22

22. . A reaction in which atoms or groups are removed from adjacent atoms to form a double or triple bond.

substitution

elimination

addition

polymerization

Answer 22

elimination

Question 23

23. It is a specie that has a nonbonding pair of outer-shell electrons that it can share in a chemical reaction.

Lewis base

Lewis acid

Arrhenius acid

Arrhenius base

Answer 23

Lewis base

Question 24

24. It is a reaction in which the element of hydrogen is introduced into a molecule.

halogenation

hydration

hydrogenation

alkylation

Answer 24

hydrogenation