Week 7

Question 1

Cycloalkanes is also called

Answer 1

alicylic compounds

Question 2

Cycloalkanes (alicylic compounds) are___________ containing C-C and C-H single bonds only

Answer 2

saturated cyclic hydrocarbons

Question 3

What is the simplest member cycloalkane?

Answer 3

cyclopropane (C3H6)

Question 3

Cycloalkanes are represented as_______

Answer 3

polygons

Question 3

It is the most studied, understood and is considered the most important cycloalkane

Answer 3

cyclohexane(C6H12)

Question 4

Classifications of cyclic compounds

Answer 4

(1) Homocyclic compounds
(2) Heterocyclic compounds

Question 4

These are cyclic compounds having atoms of the same elements as their ring members

Answer 4

Homocyclic compounds

Question 4

(True or False)
Cycloalkanes are represented as polygons with the understanding each corner to a C atom where requisite number of H atom is attached considering its divalent nature

Answer 4

False
(tetravalent)

Question 5

Homocyclic compounds consist of C atoms only are known as

Answer 5

Carbocyclic compounds or carbocycles

Question 5

These are cyclic compounds having atoms of different elements as ring members including carbon atoms

Answer 5

Heterocyclic compounds

Question 6

(True or False)
Heterocyclic compounds are cyclic compounds having atoms of the same elements as their ring members

Answer 6

False
(different elements)

Question 6

(True or False)
Homocyclic compounds are cyclic compounds having atoms of different elements as ring members including carbon atoms

Answer 6

False
(same elements)

Question 6

(True or False)
Heterocyclic compounds may contain oxygen, nitrogen, sulfur or halogens in place of C atom in the ring

Answer 6

False
(not halogens)

Question 7

We name compounds containing two fused or bridged rings as ________

Answer 7

bicycloalkanes

Question 8

(True or False)
We interpose an expression in parenthesis within the name that denotes the number of carbon atoms in each bridge

Answer 8

False
(brackets)

Question 9

First two members are_____ ,next three members are _____,_ and higher ones are _____

Answer 9

gases, liquids, solids

Question 10

(True or False)
Cycloalkanes are soluble in water, alcohol and ether

Answer 10

False
(insoluble in water)

Question 11

(True or False)
Cycloalkanes’ boiling points show a gradual increase with increase of molecular mass

Answer 11

True

Question 12

(True or False)
Cycloalkanes’ boiling points are lower than those of isomeric alkenes or corresponding alkanes

Answer 12

False
(higher)

Question 13

(True or False)
Cycloalkanes’ density increase gradually with increase of molecular mass

Answer 13

True

Question 14

(True or False)
Lower numbers are lighter than water and floats over it

Answer 14

True

Question 15

________with halogens in the presence of light occurs in all cycloalkanes

Answer 15

Substitution reaction

Question 15

Lower members undergo _____ with H2, X2 and HX.

Answer 15

addition reaction

Question 16

(True or False)
Substitution reaction with halogens in the presence of light occurs in all cycloalkanes

Answer 16

True

Question 17

(True or False) Lower members undergo substitution reaction with H2, X2 and HX.

Answer 17

False (addition reaction)

Question 18

(True or False) The tendency of forming addition compounds increases with increase in size of ring

Answer 18

False (tendency of forming addition compounds decreases)

Question 19

It is an increase in energy when tetrahedral bond angles deviate from the optimum angle of 109.5°

Answer 19

Angle strain

Question 20

Cycloalkanes are halogenated in the presence of sunlight or UV light like alkane

Answer 20

Free radical substitution

Question 21

α-ω from dihalides having halogen atoms on two ends of carbon chains (α-ω dihalides) with Na or Zn dust gives rise to the formation of cycloalkanes called

Answer 21

Intramolecular Wurtz Reaction or Freund reaction

Question 22

This can be used to prepare cycloalkanes from three to six carbon atoms

Answer 22

Intramolecular Wurtz Reaction or Freund reaction

Question 23

In the medical application, cycloalkanes are used as an __________ in the production of drugs

Answer 23

organic solvent

Question 24

(True or False) Cycloalkanes are utilized in the manufacture of hair products as well as in the food industries

Answer 24

True

Question 25

The cycloalkane called ______ is used as an anesthetic agent in medical field

Answer 25

cyclopropane

Question 26

(True or False) The cycloalkane called cyclohexane is used as an anesthetic agent in medical field

Answer 26

False (cyclopropane)

Question 27

(True or False) Carboplatin which is derived from cyclopentane is used to treat cancer

Answer 27

False (cyclobutane)

Question 28

is derived from cyclobutane is used to treat cancer

Answer 28

carboplatin

Question 29

(True or False) Some of cycloalkanes are used for pigmentation purposes and also used as fragrances in perfume manufacturing sector

Answer 29

True

Question 30

Some of cycloalkanes are found in the _____ of plants and animals as _________

Answer 30

tissues steroids