wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

ALKYNES

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Reactions that open up a double or triple bond to insert various atoms are called ___

a)

summation reactions

b)

addition reactions

c)

substitution reactions

d)

elimination reactions

2.

Specifically, when a hydrocarbon undergoes an addition reaction with a water molecule it's called ___

a)

hydrogenation

b)

hydroxynation

c)

hydration

d)

liquidation

3.

What is the general formula for alkynes?

a)

CnH2n-2

b)

CnH2n-4

c)

CnH2n

d)

CnH2n+2

4.

Name the simplest alkyne.

a)

Propyne

b)

Butyne

c)

Ethyne

d)

Methyne

5.

What is the name of the process by which alkynes are converted into alkenes?

a)

Polymerization

b)

Hydrogenation

c)

Substitution

d)

Oxidation

6.
Which of the following alkene reaction follows Markovnokv's rule?
a)
CH2 = CH2 + H2 → CH3 – CH3
b)
CH2 = CH2 + Br2 → Br-CH2 – CH2-Br
c)
CH2 = CH- CH3+ HCl → CH3 – CHCl - CH3
d)
CH2 = CH2 + H2O → OH-CH2 – CH3
7.

In 2-butene, If the methyl groups are on the same side of the double bond, we call it ___

a)

delta- 2-butene

b)

cis-2-butene

c)

sigma-2-butene

d)

trans-2-butene

8.

Reactions that open up a double or triple bond to insert various atoms are called ___

a)

summation reactions

b)

addition reactions

c)

substitution reactions

d)

elimination reactions

9.
a)
3-ethyl-2,2-dimethyl-3-hexyne
b)
4-ethyl-5,5-methyl-2-hexayne
c)
4-butyl-2-hexayne
d)

4-ethyl-5,5-dimethyl-hex-2-yne

10.
As the number of carbons increases in an homologous series the melting point generally...
a)
increase
b)
decrease
c)
stay the same
d)
varies
11.
Which of the following will react with Br2(l)
a)
hexene 
b)
cyclohexane
c)
hexane
d)
alkanes
12.

Which reagent is commonly used to prepare alkynes from vicinal dihalides?

a)

Br2

b)

LiAlH4

c)

alc.KOH&NaNH2

d)

H2O

13.

What is the primary method for synthesizing terminal alkynes?

a)

Oxidation

b)

Dehydrohalogenation

c)

Hydrogenation

d)

Hydrolysis

14.

Which of the following statements is true regarding the acidity of terminal alkynes?

a)

They have no acidic properties.

b)

They are more acidic than alkanes.

c)

They are less acidic than alkenes.

d)

They are equally acidic as alkenes.

15.

Which of the following compounds is an example of a terminal alkyne?

a)

All of the above

b)

1-pentyne

c)

2-butyne

d)

1-butyne

16.

What is the product of the reaction between 1-butyne and HBr?

a)

Butane

b)

1-bromobutane

c)

Butyne

d)

2-bromobutane

17.

What type of reaction occurs when an alkyne reacts with a halogen?

a)

Hydrogenation

b)

Halogenation

c)

Hydrolysis

d)

Dehydrohalogenation

18.

What is the hybridization of the carbon atoms in an alkyne?

a)

sp3d

b)

sp3

c)

sp2

d)

sp

19.

What is the product of the reaction between 1-butyne and H2 in the presence of a catalyst?

a)

Butane

b)

2-butyne

c)

1-hexene

d)

2-pentyne

20.

What is the product of the reaction between ethyne and water in the presence of an acid catalyst?

a)

Butyne

b)

ethanal

c)

Butane

d)

1-bromobutane

Similar Resources on Wayground

clasificación de compuestos organicos

15 questions

clasificación de compuestos organicos

quiz

Worksheet

•

11th Grade

Termokimia

20 questions

Termokimia

quiz

Worksheet

•

11th Grade

aromatic

20 questions

aromatic

quiz

Worksheet

•

10th - 12th Grade

Senyawa Hidrokarbon (Kelas XI)

20 questions

Senyawa Hidrokarbon (Kelas XI)

quiz

Worksheet

•

11th Grade

Ancol-Phenol-Andehit-Axit

20 questions

Ancol-Phenol-Andehit-Axit

quiz

Worksheet

•

11th - 12th Grade

DANH PHÁP ANKEN

15 questions

DANH PHÁP ANKEN

quiz

Worksheet

•

11th - 12th Grade

ANĐEHIT

20 questions

ANĐEHIT

quiz

Worksheet

•

11th Grade

UH Hidrokarbon

15 questions

UH Hidrokarbon

quiz

Worksheet

•

11th Grade