GROUP 14 BINARY COMPOUNDS

WHAT IS THE CARBIDES FORMED BY THE BONDING OF CARBON WITH THE ATOM THAT IS SLIGHTLY LESS ELECTRONEGATIVE THAN ITSELF?

• saline carbide

• interstitial carbide

• covalent carbide

WHAT IS THE LESS LIKELY COMPOUND TO BE FORMED ?

• CaC2

• SnH4

• SiH4

• C2Na2

SILICON OCCURS WIDELY IN ____ AND ____ AS SILICATES

• ROCKS

• DUST

• SANDS

• QUARTZ

WHICH ONE HAS POROUS STRUCTURE ?

• CARBON BLACK

• ACTIVATED CARBON

AS GOING DOWN GROUP 14, MELTING POINT

• DECREASE

• INCREASE

• CONSTANT

Tetrachlorides of Group 14 elements in the Periodic Table are liquid at room temperature. The least thermally stable tetrachloride is ?

• CCL4

• GeCl4

• SnCl4

• PbCl4

which of the following statements is not true ?

• diamond is the hardest substance known

• silicon exist as solid in room temperature

• germanium is softest compare to stannum

HOW MANY TYPES OF OXIDE DO CARBON FAMILY FORM ?

• 2

• 3

• 5

• 6

WHAT IS THE OTHER NAME FOR GROUP 14 ELEMENTS ?

• CARBON GROUP

• BORON GROUP

• NITROGEN GROUP

The main elements use in optical fibre that help in telecommunications and data transmission 

• LEAD

• TIN

• GERMANIUM