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. Types of structural isomerism are

1.All of them

2.Chain isomerism

3.Functional group isomerism

4.Position isomerism

Question 1 of 20

Question 2 of 20

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

1.Deep blue

2.Brown

3.Yellow

4.White

Question 2 of 20

Question 3 of 20

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

1.Molecules

2.Atom

3.Matter

4.Organic compounds

Question 3 of 20

Question 4 of 20

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

1.Acryl

2.Carboxylic

3.Ketone

4.Aryl

Question 4 of 20

Question 5 of 20

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

1.Termination step

2.Elimination step

3.Propagation step

4.Initiation step

Question 5 of 20

Question 6 of 20

6. The major portion of natural gas is:

1.Ethabe

2.Butain

3.Methane

4.Poopane

Question 6 of 20

Question 7 of 20

7. Which of the following is an aromatic compound:

1.Acetone

2.Benzene

3.Propanol

4.Cyclohexane

Question 7 of 20

Question 8 of 20

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

1.Cracking

2.Isomerism

3.Polymerization

4.Functional group

Question 8 of 20

Question 9 of 20

9. In organic compounds carbon atoms form:

1.Ionic bond

2.Metalic bond

3.None of these

4.Covalent bond

Question 9 of 20

Question 10 of 20

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

1.Isomer

2.Poly functional

3.Derivative

4.Heterocyclic

Question 10 of 20

Question 11 of 20

11. Nucleophile is considered as

1.Spectator

2.Donator

3.Mutual share

4.Acceptor

Question 11 of 20

Question 12 of 20

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

1.CH₃– CH₂ – OH

2.CH₃– O – CH₃

3.CH₃ CooH

4.CH₃– CH₂ – Br

Question 12 of 20

Question 13 of 20

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

1.Blue

2.Deep yellow

3.Green

4.Violet

Question 13 of 20

Question 14 of 20

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

1.Copper

2.Sodium

3.Iron

4.Aluminium

Question 14 of 20

Question 15 of 20

15. Bonding pairs of electrons in each carbon atom

1.Attract

2.Repel

3.Remain intact

4.Centrifuge

Question 15 of 20

Question 16 of 20

16. Relative formula C₃H₆ is of molecule:

1.Ethane

2.Propane

3.Ethene

4.Propene

Question 16 of 20

Question 17 of 20

17. Which of the following compound is heterocyclic?

1.Thiphene

2.All of these

3.Pyrole

4.Pyridine

Question 17 of 20

Question 18 of 20

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

1.8

2.20

3.100

4.60

Question 18 of 20

Question 19 of 20

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

1.2 atoms

2.1 atom

3.4 atoms

4.3 atoms

Question 19 of 20

Question 20 of 20

20. Element that is backbone of organic molecules is

1.All of them

2.Carbon

3.Oxygen

4.Hydrogen

Question 20 of 20

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