CBSE Class 10 Science Carbon and Its Compounds Quiz 1

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CBSE › Class 10 › Science › Carbon and Its Compounds

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1. Carbon exists in the atmosphere in the form of

A carbon monoxide only B carbon monoxide in traces and carbon dioxide C carbon dioxide only D coal

2. Graphite is used as a lubricant in machines because

A it is a good conductor of electricity. B it has a high melting point and slippery layers. C its density ranges from 1. 9 to 2. 3 g/cm D it is strong and soft.

3. The allotrope of carbon which is a good conductor of heat and electricity is

A diamond B graphite C charcoal D none of these

4. Which of the following does not belong to the same homologous series?

A CH B C C C D C

5. Which of the following is not considered as crystalline allotrope of carbon?

A Coal B Diamond C Graphite D Fullerence

6. Which form of carbon is found in Golkonda mines of Karnataka?

A Diamond B Graphite C Coal D Coke

7. Lead pencil contains

A graphite B diamond C lead D lead sulphate

8. Mineral acids are stronger acids than carboxylic acids because

A (i) and (iv) B (ii) and (iii) C (i) and (ii) D (iii) and (iv)

9. When ethyl alcohol and acetic acid are mixed, the resulting ester has a chemical formula

A CHCOOCH B CHCOOCH C CHCOOCH

10. A few drops of ethanoic acid were added to solid sodium carbonate. The observation made was that

A a hissing sound was produced B brown fumes evolved C brisk effervescence occurred D a pungent smelling gas evolved

Practice more on Carbon and Its Compounds

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