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1.

When carbon burns in air, it forms two oxides CO and `CO_(2)`. This shows that carbon has:A. two allotropic formsB. two oxidation statesC. two isotopesD. four electrons in valency shells.

Answer» Correct Answer - B
Discussion
2.

Indiborane:A. 1 bridged hydrogen and two terminal hydrogens are present.B. 2 bridged hydrogen and four terminal hydrogens are presentC. 3 bridged hydrogens and three terminal hydrogens are presentD. none of the above.

Answer» Correct Answer - B
Discussion
3.

`C Cl_(4)` is inert towards hydrolysis but `SiCl_(4)` is readily hydrolysed b ecause:A. carbon cannot expand its octet but silicon can expand its octetB. ionisation potential of carbon is higher than siliconC. carbon forms double and triple bondsD. electronegatively of carbon is higher thatn that of silicon.

Answer» Correct Answer - A
Discussion