Methane Reacts With 1 Mole Of Chlorine In Presence Of

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Guess Paper – 2011
Class – X
Subject –Chemistry (Carbon and its Compounds)

Multiple choice questions:

1. Methane reacts with 1 mole of chlorine in presence of
sunlight to give the reaction is called
reaction.

a / Chloromethane, substitution
b / Chloromethane, substitution
c / Dichiorometharie, addition
d / Trichloromethane, substitution

2.The self linkage property (catenation) is maximum in

a / carbon
b / silicon
c / sulphur
d / phosphorus

3.The number of isomers of C6H14 are

a / 4
b / 5
c / 6
d / 3

4. Carboxylic acid containing one carbon atom is called

a / Formic acid
b / Butyric acid
c / Acetic acid
d / Propanoic acid

5.Artificial flavour for orange is obtained from

a / amyl acetate
b / isoamyl valerate
c / melhyl butyrate
d / octyl acetate

6.Drinking alcohol is very harmful and it ruins the health.
"Drinking alcohol" stands for

a / drinking methyl alcohol
b / drinking ethyl alcohol
c / drinking propyl alcohol
d / drinking isopropyl alcohol

7.Which of the following statements about graphite and
diamond is true ?

a / They have the same crystal structure
b / They have the same degree of hardness
c / They have the same electrical conductivity
d / They can undergo the same chemical reactions

8.The number of covalent bonds in C4H10 is

a / 10
b / 8
c / 13
d / 12

9.CHO represents the functional group

a / esters
b / carboxylic acid
c / alcohols
d / aldehydes

10.A functional group mainly determines the

a / physical properties
b / chemical properties
c / both
d / none of these

11.Solubility of alcohol in water is due to

a / low density of alcohol
b / volatile nature of alcohol
c / ionization

12.100% pure ethyl alcohol is called

a / rectified spirit
b / absolute alcohol
c / denatured alcohol
d / power alcohol

Answer these questions:

1. Define isomer and give two examples

2. What is the IUPAC name of , CH3CH2CH═CH2 and CH3CHO

3. What is meant by term homologous series ?What is the general formula of Alkenes

4. Classify the following as Alkane and alkyne,,

CH4, C2H4 , C2H2 , C2H6 , C3H4

5.Explain why carbon generally form compound by covalent bonding?

6. Give example of each

a..open chain

b. branched chain hydrocarbon

7. Why mixture of water and alcohol used instead of water only in radiators?

8. State any two uses of alcohol.

9. Give two differences between soap and synthetic detergent.

10. Write two test to demonstrate that acetic acid is acidic in nature.

Long answer questions:

1. Compound A is obtained from wood tar distillation . It has specific smell and burning taste. It burns with blue flame to give CO2 and H2O . It is soluble in water . It is used as fuel and solvent . It react with sodium metal and gives out H2 gas . It react with acetic acid to form pleasant fruit smelling compound B in presence of conc. . H2SO4. Name A and B and write all reaction involve in these.

2. Match A and B

A B

a. Ethene / 1. Used in antifreeze
b. Ethanol / 2. Fossil fuel
c. Ester / 3. Fruity smell
d. Soap / 4. Non biodegradable
e. Detergent / 5. Doesn’t give lather with hard water
f. Coal / 6. Ca ion and Mg ion
g. Hard water / 7. Insulator
h. Carboxy methyle cellulose / 8. Helps in suspending dirt
i. PVC / 9. Bleaching agent
j. Sodium perborate / 10. Monomer of pollethene

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