Download Class X Chemistry-Carbon and its compounds

INDIAN SCHOOL MUSCAT
DEPARTMENT OF CHEMISTRY
WORKSHEET (CLASS-X)
CARBON AND ITS COMPOUNDS
1. What is the unique property of carbon atom? How is this property helpful to us?
2. Why is graphite a good conductor of electricity but diamond is a non-conductor of electricity?
3. Which of the following molecule is called Buckminster fullerene?
C90 , C60 , C70 , C120
4. Why carbon forms compounds by sharing of electrons and not by the formation of ions?
5. Explain why diamond is hard while graphite is soft.
6. Classify the following compounds as alkanes, alkenes and alkynes.
C2H4 , C3H4 , C4H8 , C5H12 , C5H8 , C3H8
7. Write the electron dot structure for:
(a) Ammonia (NH3)
(b) Nitrogen (N2)
(d) Carbon dioxide (CO2)
(e) Cyclohexane (C6H12)
(g) Methane (CH4)
(h) Oxygen (O2)
(c) Ethyne (C2 H2)
(f) Benzene (C6H6)
8. Give reason for the formation of large number of carbon compounds.
9. A hydrocarbon molecule has 3 carbon atoms. Write down its molecular formulae if it is an
(i) alkane,
(ii) alkene,
(iii) alkyne
10. Draw all the possible structural isomers of
(a) Butane
(b) Pentane
Also give their IUPAC names.
11. Name the functional groups in the following compounds.
(i) CH3CHO
(ii) CH3COCH3
(iii) CH3CH2CH2COOH
(iv) CH3CH2CH2OH
Also write the IUPAC names of these compounds.
12. The general formula of a homologous series of carbon compounds is CnH2n. Write the
molecular formulae, structures and IUPAC names of the second and fourth member of this
series.
13. Amongst saturated and unsaturated hydrocarbons, which is more reactive and why?
14. Addition of chlorine to methane to form chloromethane is termed as substitution reaction.
Why?
15. Complete the following reactions. Also name the final products.
(a) CH3COOC2H5
NaOH
(b) CH3COOH + NaHCO3
(c) CH3COOH + C2H5OH
Conc. H SO
2
4
(d) C2H5OH + Na
(e) CH3COOH + NaOH
16. An organic compound with molecular formula C2H4O2 produces brisk effervescence on
addition of sodium carbonate/bicarbonate.
(a) Identify the organic compound.
(b) Name the gas evolved.
(c) How will you test this gas?
(d) Write a chemical equation for the above reaction.
(e) List two important uses of the above compound.
17. What is an oxidising agent? Name two oxidising agents which can oxidise ethanol to ethanoic
acid. Write the equation of the reaction involved.
18. Explain the cleansing action of soaps.
19. Differentiate between soaps and detergents.
20. Give reason:
(a) A mixture of oxygen and ethyne is burnt for welding and not a mixture of ethyne and air.
(b) Soaps do not work well with hard water.