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Lead pencil is made up of ………………….....

Lead pencil is made up of …………………..

A

lithium

B

charcoal

C

lead

D

graphite

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The correct Answer is:
A, D
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LAKHMIR SINGH & MANJIT KAUR-CARBON AND ITS COMPOUNDS-Exercise
  1. The hydrocarbon which has alternate single and double bonds arranged i...

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  2. Which of the following cannot exhibit isomerism ?

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  3. Lead pencil is made up of …………………..

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  4. The number of isomers formed by the hydrocarbon with molecular formula...

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  5. The number of carbon atoms joined in a spherical molecule of bukminste...

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  6. A solid element X has four elecrtrons in the outermost shell of its to...

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  7. Two organic compounds A and B have the same molecular formula C(6)H(1...

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  8. The solid element A exhibits the property of catenation. It is also pr...

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  9. An element E exists in three allotropic forms A, B and C. In allotrope...

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  10. You are given the following molecular formulae of some hydrocarbons: ...

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  11. Which of the following compounds can have a triple bond? C(2)H(4),C(...

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  12. Write the molecular and strucatural formula of a cyclic hydrocarbon w...

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  13. What is the molecular formula and structrual formula of a cyclic hydro...

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  14. Write the molecular fromula of : (i) an alkane (ii) an alkne, and ,(ii...

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  15. Which of the following compounds can have a double bond? C(4)H(10),...

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  16. Which of the following hydrocarbons is unsaturated ? C(3)H(4),C(2)H(...

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  17. Write the molecular formula of ethanol

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  18. What is the next higher homologue of methanol (CH(3)OH)?

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  19. Identify the functional group present in the following compound and na...

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  20. Give it he common name and IUPAC name of the simplest aldehyde.

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