Which among the following oxides is amphoteric in nature?

The $INCORRECT$ statement regarding the structure of $C_{60}$ is :

Which of the following is true for diamond?

$(1)$ Half-life of $^{14}C$ is $...........$
$(2)$ $..........$ isotope of carbon is used in radiocarbon dating.
$(3)$ Main component of ceramic,cement and glass is $........$

For the $14^{th}$ group (carbon family),which of the following statements is correct regarding the properties as the atomic number increases?

In the laboratory,silicon can be prepared by the reaction of: