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CBSE

Chemistry

NEET Chemistry : The p-Block Elements

51.

When lead nitrate is heated it produces :

52.

Silicon is :

53.

Inorganic graphite is :

54.

Water gas is :

55.

Borax is used as a cleansing agent because on dissolving in water it gives

56.

Assertion : Borax bead test is not suitable for Al(III).

Reason : Al₂O₃ is insoluble in water.

If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.

57.

Assertion: Silicones are hydrophobic in nature.

Reason: Si-O- Si linkages are moisture sensitive.

If both assertion and reason are true and reason is the correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true, but reason is false.
Both assertion and reason are false statements.

58.

Which of the following is a carbonate ore?

59.

Which of the following organo - silicon compound on hydrolysis will give a three dimensional silicone ?

60.

The energy gaps (E_g) between valence band and conduction band for diamond, silicon and germanium are in the order

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