CBSE X (Chemistry) Second term (Test paper)

Class X

Second term

Unit: Chemical Substances –Nature and Behaviour

CARBON COMPOUNDS

(Question 1-10 are 1 Mark, Question 11-14 are 2 Marks and Question 15-18 are 3 Marks)

1.       Name the following functional group.  (–OH, -COOH)

2.       Give electron dot structure of CH₃Cl.

3.       Write formula of methanol.

4.       Draw structure of Chlorobutane.

5.       What are oxidizing agents?

6.       Name the functional group present in the compound               CH₃CH₂NH₂.

7.       What is the odour of the acetic acid like?

8.       Name the CH₃C=CH.

9.       How many C-H bonds are present in ethane C₂H₆.

10.   What is the need to denature alcohol?

11.   Give one example of substitution reaction.

12.   Draw structural formula of all isomers of hexane.

13.   Write chemical equation showing decarboxylation reaction of ethanoic acid.

14.   What are enzymes? Name the enzyme which ferments sugar cane to ethanol?

15.   What are synthetic detergents? Give example and how it is better than soap?

16.   What is homologous series? Explain with example. By how many carbon atoms and hydrogen atoms do any two adjacent homologues differ?

17.   What are esters? Write chemical equation showing formation of ester?

18.   Write  the reaction and name the products formed.

a)      Acetic acid and sodium hydroxide are heated together.

b)      Ethanol is burnt in oxygen in the presence of alkaline KMnO₄