10th Carbon and its compounds CBSE BoardTest Paper

VERY SHORT ANSWER QUESTIONS

1. How many covalent bonds are present in ethane , C2H6 .

2. What do you mean by catenation ?

3. Name the simplest hydrocarbon .

4. Which functional group is 
present in (a) Methanal (b) Propanone ?

5. Draw electron dot structure of the first member of alcohol homologous series.

6. Give name and formula of simplest ketone .

7. What is absolute alcohol ?

8. Write the structure and name of compound A in the following reaction :
CH3 CH2 OH ------------> A+H2O

9. Name and give formula for higher homolog of ethanol .

10. What do you mean by octet rule ?

11. Differentiate between soaps and detergents on the basis of their chemical composition .

12. What is glacial acetic acid ?

13. Draw the structure of a micelle .

14. Which of the following hydrocarbons will give addition reaction ?

C2H6 , C3H8 , C3H4 , C2H4

15. Give a chemical test to distinguish between Ethane and ethane.
Short answer questions
1. Explain the nature of covalent bond using the bond formation in CH3Cl

2. What are isomers ? explain with an example.

3. What are hydrocarbons ? Give general formulaes of alkanes , alkenes , and alkynes

4. What is homologous series ? Give its characteristics .

5. State two conditions under which hydrocarbons give sooty flame on combustion.

6. How will you diffrentiate ethane and ethanoic acid by a simple chemical test ? Also draw electron dot

structure for these two .

7. What do you mean by (a) Denatured alcohol (b) Glacial acetic acid ?

8. Explain the following reactions (a) Esterification (b) saponification .

9. A brisk effervescence is produced when a piece of sodium metal is added to ethanol . 
(a) write the   chemical equation for reaction 
(b) Name the gas evolved . How will you test this gas ?

10. Why are carbon and its compounds used as fuels ?

11. How ethanol and ethanoic acid can be differentiated on the basis of their physical and chemical

properties ?

12. What happens when etanoic acid is 

(a) treated with sodium bicarbonate (b) heated with conc. H2SO4

(c) heated with ethanol in the presence of conc. H2SO 4 ? Give equations .

13. Explain following reactions of carbon compounds ? (a) addition reaction (b) oxidation (c) substitution .

14. What is a covalent bond .Describe the formation of O2 and N2 .

15. An organic compound X is an essential constituent of wine and beer . Oxidation of X yields an 
organic acid Y which is present in vinegar . Name the compounds X and Y . Also write their formulae.

Long answer questions

1. (a) Explain cleansing action of soap ? (b) Differentiate between soaps & detergents.

2. Explain formation of scum when soap reacts with hard water.Why is detergent a better cleansing agent 
 than soap?

3. (a) Why does carbon form compounds mainly by covalent bonding ? (b) List any two reasons for
carbon forming very large number of compounds ?

4. Name the class of organic compounds to which CH 3 - CH = CH 2 belongs . Give its IUPAC name .
Which product is formed when this compound is treated with H2 in the presence of nickel catalyst .also
give name and formula of higher homolog of CH 3 - CH= CH2

5 Two compounds A & B have molecular formulae C3H6 & C3H8 respectively, which one is likely to 
show addition reaction ? Giive an equation to show how addition reaction is useful in making vegetable
ghee.

6. An organic compound X is a liquid which often freezes during winter time in cold countries ,has the

molecular formula C2H4O2 . On warming it with ethanol in the presence of a few drops of conc. sulphuric 
acid , a compound Y is formed , which is having sweet smell.
(a) Identify X & Y.  (b) Write a chemical equation for the reaction