12th Class Chemistry Chapter 7 Fundamental Principles of Organic Chemistry Mcqs Test Online Punjab Boards

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Question 1 of 20

Chemistry

1. The Simplest molecule of Bucky Ball contain carbon atoms:

1.8

2.20

3.100

4.60

Question 1 of 20

Question 2 of 20

2. Element that is backbone of organic molecules is

1.Hydrogen

2.Carbon

3.All of them

4.Oxygen

Question 2 of 20

Question 3 of 20

3. Select from the following the one, which is alcohol;

1.CH₃– CH₂ – OH

2.CH₃– CH₂ – Br

3.CH₃– O – CH₃

4.CH₃ CooH

Question 3 of 20

Question 4 of 20

4. In organic compounds carbon atoms form:

1.None of these

2.Metalic bond

3.Ionic bond

4.Covalent bond

Question 4 of 20

Question 5 of 20

5. There are few homologous series of compounds. The existence of homologous series is due to:

1.Polymerization

2.Cracking

3.Isomerism

4.Functional group

Question 5 of 20

Question 6 of 20

6. Relative formula C₃H₆ is of molecule:

1.Propane

2.Ethene

3.Propene

4.Ethane

Question 6 of 20

Question 7 of 20

7. Nucleophile is considered as

1.Acceptor

2.Spectator

3.Donator

4.Mutual share

Question 7 of 20

Question 8 of 20

8. Only one 'benzene ring' is present in compounds of

1.Aryl

2.Ketone

3.Carboxylic

4.Acryl

Question 8 of 20

Question 9 of 20

9. Which of the following compound is heterocyclic?

1.Pyridine

2.Thiphene

3.All of these

4.Pyrole

Question 9 of 20

Question 10 of 20

10. If a molecule contains more than one functional group it is known as:

1.Poly functional

2.Isomer

3.Derivative

4.Heterocyclic

Question 10 of 20

Question 11 of 20

11. When AgNO₃ is added to the Lassaignes’ solution which colour is formed for lodine:

1.Deep yellow

2.Green

3.Blue

4.Violet

Question 11 of 20

Question 12 of 20

12. The major portion of natural gas is:

1.Poopane

2.Ethabe

3.Methane

4.Butain

Question 12 of 20

Question 13 of 20

13. Bonding pairs of electrons in each carbon atom

1.Attract

2.Repel

3.Remain intact

4.Centrifuge

Question 13 of 20

Question 14 of 20

14. Substances which are basis of human life on earth are

1.Organic compounds

2.Matter

3.Molecules

4.Atom

Question 14 of 20

Question 15 of 20

15. When water vapours are passed over white anhydrous copper sulphate, which colour is formed?

1.Brown

2.Yellow

3.Deep blue

4.White

Question 15 of 20

Question 16 of 20

16. Formation of radicals which attack reactants molecules generate more free radicals. This step is a

1.Propagation step

2.Termination step

3.Initiation step

4.Elimination step

Question 16 of 20

Question 17 of 20

17. Lassaignes’ solution is prepared in the detection of elements of organic compound. Which metal is used for the reaction with organic compound?

1.Sodium

2.Iron

3.Aluminium

4.Copper

Question 17 of 20

Question 18 of 20

18. Types of structural isomerism are

1.Chain isomerism

2.Position isomerism

3.Functional group isomerism

4.All of them

Question 18 of 20

Question 19 of 20

19. Two optical isomers are formed from carbon atoms to create bond of

1.4 atoms

2.3 atoms

3.1 atom

4.2 atoms

Question 19 of 20

Question 20 of 20

20. Which of the following is an aromatic compound:

1.Propanol

2.Acetone

3.Cyclohexane

4.Benzene

Question 20 of 20

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