CHM205 – 2019

Which of the following options is used in glass and cement manufacture.

________ is used to strenghten rubber, as a pigment in inks, paints, paper and plastics.

Diamond is not a conductor of electricity because of _________.

It does not have delocalised electrons

The elements of Group 4 show oxidation states of _____

Among the Group 4 elements moving from carbon to silicon the covalent radius increases sharply afterwards the increase is gradual, this is attributed to __________.

Tin is obtained by ___________.

_________ is used for making crucibles, as a lubricant in heavy machines and as pencil lead.

Which of the following statement is correct?

Although diamond occur in nature but it can be obtained artificially by __________.

Group 4 elements form mostly covalent compounds because of _______.

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