Carbon and its Compounds

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Carbon and its Compounds - 02

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Q1. From which of the following substance pencil lead is formed? *

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Graphite

Charcoal

Wood

Lead

Q2. Anion is formed when *

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Atom loses electrons

Atom gains electrons

Atom shares electrons

Proton is lost by the atom

Q3. The I.U.P.A.C name of CH3CH2CH=CHCH3 is *

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Pent-2-ene

Pent-3-ene

But-1-ene

3-Butene

Q4. Ester is formed by the reaction between *

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An acid and an alcohol

An acid and a base

An acid and an alkene

A base and an alcohol

Q5. What is denatured alcohol? *

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Ethyl alcohol containing 60% of water by weight

Ethyl alcohol which has been made unfit for drinking purpose by adding small amount of poisonous substance

Alcohol having properties of an acid

Methyl alcohol which has been made unfit for drinking purpose by adding small amount of poisonous substance

Q6. Which of the following substance produces brisk effervescence with baking soda solution? *

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Sunflower oil

Vinegar

Ethanoic acid

Table salt

Q7. Carbon exists in the atmosphere in the form of *

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Only carbon dioxide

Only carbon monoxide

Coal

Carbon monoxide in traces and carbon dioxide

Q8. Which of the following statements are usually correct for carbon compounds? These (i) Are good conductors of electricity. (ii) Are poor conductors of electricity. (iii) Have strong forces of attraction between their molecules. (iv) Do not have strong forces of attraction between their molecules. *

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(ii) and (iv)

(ii) and (iii)

(i) and (iii)

(i) and (iv)

Q9. A molecule of methane (CH4) has *

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Only triple bonds

Only double bonds

Two double bonds and one single bond

Only single bonds

Q10. Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of *

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Substitution reaction

Oxidation reaction

Addition reaction

Displacement reaction

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