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.