Carbon and its Compounds

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Carbon and its Compounds - 05

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Q1. When ethanoic acid is treated with NaHCO3 the gas evolved is *

1 point

CO2

CH4

Q2. Ethanol on complete oxidation gives *

1 point

CO2 and water

acetone/ethanone

ethanal

acetic acid/ethanoic acid

Q3. Which of the following will give a pleasant smell of ester when heated with ethanol and a small quantity of sulphuric acid? *

1 point

CH3COOH

CH3CHO

CH3OH

CH3CH2OH

Q4. Name the functional group present in CH3COCH3 *

1 point

Ketone

Alcohol

Aldehyde

Carboxylic acid

Q5. Why does carbon form compounds mainly by covalent bonding? *

1 point

All the above

It requires large amount of energy to form C4+ or C-4

It shares its valence electrons to complete its octet.

There are four electrons in the outermost shell of carbon.

Q6. Addition reactions are undergone by *

1 point

saturated hydrocarbons (alkanes)

only alkenes

both alkenes and alkynes

only alkynes

Q7. Identify ‘A’ in the following reaction:CH3COOH + Na2CO3 → A + CO2 + H2O *

1 point

CH3COONa

NaOH

CH2(Na)COOH

NaHCO3

Q8. Which of the following belongs to homologous series of alkynes?C6H6, C2H6, C2H4, C3H4. *

1 point

C2H6

C6H6

C3H4

C2H4

Q9. A hydrocarbon has four carbon atoms. Give its molecular formula if it is an alkene. *

1 point

C4H4

C4H10

C4H6

C4H8

Q10. Give the IUPAC name of CH3COOC2H5. *

1 point

Ethyl ethanoic acid

Butanoate

Ethyl methyl carboxylic acid

Ethyl ethanoate

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