Class 10 ICSE - ORGANIC CHEMISTRY - 1

ORGANIC CHEMISTRY - Important questions - 1

Name the following.

1.         The tetravalent non-metal which shows Catenation.

2.         The property of organic compounds having same molecular formula but different structural formula.

3.         A series of organic compounds where the successive members of that series follow a regular structural pattern.

4.         The hydrocarbons containing Carbon-Carbon multiple bond/s.

5.         The isomerism shown by the compounds differ in the arrangement of Carbon atoms in the chain.

6.         The functional group which is indicated by the secondary suffix ‘-oic acid’.

7.          Alkenes undergo this type of reactions.

8.         Theses organic compounds undergo substitution reactions.

9.         These compounds are also called as paraffins.

10.     The compound in which one Carbon atom is joined to four Hydrogen atoms by single covalent bonds.

11.     The gas produced when sodium propionate is heated with Soda lime.

12.     The gas produced when Sodium ethanoate is heated with Soda lime.

13.     The alkane obtained when Methyl iodide is reduced in presence of Zn/Cu couple.

14.     The reaction which is not suitable for the preparation of alkanes having even number of Carbons atoms.

15.     A hydrocarbon which contributes towards Green House Effect.

16.     The product formed in the step 3 of Chlorination of Methane.

17.     The product obtained in the final step of Chlorination of Methane.

18.     The gas produced when an Alkane burns in presence of sufficient Oxygen.

19.     The product obtained by the oxidation of Methane in a red hot Copper tube.

20.     The product formed when Methane is oxidized in presence of MoO as a catalyst.

21.     A Hydrocarbon used in the Manufacture of Carbon black used as a pigment in shoe polish.

22.     The hydrocarbons containing olefenic bond.

23.     The dehydrating agent used to prepare Ethene from Ethyl alcohol.

24.     The alkene produced when Ethyl alcohol is heated with Conc. Sulphuric acid at 170⁰C.

25.     The alkaline solution used to purify Ethane prepared from Ethyl alcohol.

26.     Dehydrogenation of Ethyl bromide in presence of this compound gives Ethene.

27.     An alkene which has a pleasant smell.

28.     The catalyst used in the hydrogenation of alkenes.

29.     The compound which is produced by dehydrohalogenation of Ethyl bromide and decolourises Bromine water.

30.     The alkene used in the artificial ripening of fruits and welding purposes.

ORGANIC CHEMISTRY - PRACTICE PAPER - 2

ORGANIC CHEMISTRY - PRACTICE PAPER - 2

a) Draw the branched structures of the following organic compounds.                                          

i) 2-Methyl-1-Butene

ii) 3-Chloro pentanal

iii) 3-Methyl-Butan-1-ol

iv) Methoxy Ethane

b) Correct and rewrite the following statements.                                                                        

i) Isomers have the same Structural formula and molecular formula.

ii) Ethyl bromide on boiling with alcoholic KOH gives Ethyl alcohol.

iii) The successive members of a homologous series differ by –CH– group.

c) State your observations when:                                                                                                 

i) Acetylene is treated with Ammoniacal Silver nitrate solution.

ii) Methane burns in sufficient Oxygen.

ORGANIC CHEMISTRY - PRACTICE PAPER - 1

Organic chemistry class 10  ICSE

Organic Chemistry

Practice Paper -1

Question 1

a) Select the suitable word for the following statements.                                                                         

( Ethyl alcohol, Acetic acid, Hydrogenation, Ethane, Acetylene, decarboxylation)

i) The gas evolved when Sodium Propionate is heated with Soda lime.

ii) The gas used for welding purposes.

iii) An organic compound used as thermometric liquid.

iv) The process by which Ethane is obtained from Ethene.

b) Choose the correct answer from A, B, C or D.                                                                            

i) Which one of the following statement does not describe the property of alkenes.

A) Unsaturated Hydrocarbons                   B) Undergo addition reactions

C) Undergo substitution reaction               D) decolourizes Bromine water

ii) The organic compound which gives a red precipitate with Ammoniacal Cuprous chloride.

A) Ethyne               B) Ethene                    C) Ethane                    D) Ethylene

iii) Which of the following reactions serves as a test for Acetic acid.

A) Decarboxylation                                    B)Halogenation           C) Esterification 

D) Dehydro halogenation

iv) The general formula C_nH_2n represents _{_____________}

A) Alkanes             B) Alkenes                  C) Alkynes                  D) Alcohols.

c) Write balanced equations for the following conversions.                                                            

i) Calcium Carbide to Ethyne

ii) Ethanol from Ethyl chloride

iii) Acetic acid from Ethyl alcohol (slow oxidation)

iv) Diethyl ether from Ethyl alcohol.

NOMENCLATURE - ORGANIC CHEMISTRY

NOMENCLATURE - ORGANIC CHEMISTRY

Rules of Nomenclature in IUPAC system:

The name of every compound consists of :

Prefix + Root word + primary suffix + secondary suffix.

Root word – indicates the number of Carbons present in the principal chain of the compound.

 Primary suffix – indicates the nature of the between the Carbon atoms in the principal chain.

Secondary suffix – indicates the functional group.

Prefix – indicates the substituent.

No. of Carbon atoms	Root word		Nature of the bond	Primary suffix
1	Meth		C – C single bond	ane
2	Eth		C = C double bond	ene
3	Prop		C º C triple bond	yne
4	But
5	Pent

Functional group	Secondary suffix		Substituent	prefix
– COOH	oic acid		– CH3	Methyl
– CHO	al		– C2H5	Ethyl
– CO –	one		– Cl	Chloro
– OH	ol		– Br	Bromo
			– I	Iodo