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The allotropic form of carbon which is u...

The allotropic form of carbon which is used for making lead of pencil is,(1)Lamp black (2)Charcoal (3)Graphite (4)Gascarbon

A

lamp black

B

charcoal

C

graphite

D

gascarbon

Text Solution

Verified by Experts

The correct Answer is:
C
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V PUBLICATION-THE p - BLOCK ELEMENTS-QUESTION BANK
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  2. The aqueous solution of borax is

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  3. The allotropic form of carbon which is used for making lead of pencil...

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  4. The gas which combines with haemoglobin to damage is oxygen- carrying ...

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  5. The carbide which is used as abrasive is, (1)WC (2)CaC2 (3)Al4 C3 (...

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  6. Pyrosilicates are the silicates in which two tetrahedral units are lin...

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  7. A l^(3+)' is not isoelectronic with (1)Ne (2)Na^+ (3)F^- (4)Ca^2+

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  8. Which one of the following elements has the highest melting point? (1)...

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  9. Orthoboric acid, H3BO3 is a

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  10. The hybridisation of boron in 'B F3' and 'BF4' respectively is sp^2, s...

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  11. Amorphous form of silica is : tridynite, cristobalite, fumed silica, ...

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  12. In silicon dioxide : each siliçon atom is surrunded by four oxygen ato...

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  13. Carborundum is

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  14. Which of the following statement about boric acid is false. : It acts ...

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  15. Which of the following statement about boric acid is false. : It acts ...

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  16. Boron trioxide can be reduced with........to get boron Carbon Hydroge...

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  17. When boron burns in air it forms:

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  18. Which compound among the following is an antiseptic? BCl3' H3 BO3' B...

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  19. The boron compound which is formed whena solution of borax is acidifie...

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  20. Which of the following shows a tendency of dimerisation:?BCl3 BF3 BB...

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