Silicon has a strong tendency to form polymers like silicones. The chain length of silicone polymer can be controlled by adding :-

Among the following substituted silanes,the one which will give rise to a cross-linked silicone polymer on hydrolysis is:

$A$ major constituent of Portland cement,except lime,is:

Which of the following is the pyro silicate ion?

Which of the following gives $SO_2$ with dilute $H_2SO_4$?

With respect to graphite and diamond,which of the statement$(s)$ given below is (are) correct?
$(A)$ Graphite is harder than diamond.
$(B)$ Graphite has higher electrical conductivity than diamond.
$(C)$ Graphite has higher thermal conductivity than diamond.
$(D)$ Graphite has higher $C-C$ bond order than diamond.