3. Classification of elements and periodicity in properties — Chemistry STD 11 Science — Question

Statement $I : C _{2} H _{5} OH$ and $AgCN$ both can generate nucleophile.

Statement $II : KCN$ and $AgCN$ both will generate nitrile nucleophile with all reaction conditions.

Choose the most appropriate option :

$(a)$ $R_2SiO$ is repeating unit of linear silicones

$(b)$ $R$ $SiCl_3$ on hydrolysis followed by dehydration gives linear silicones

$(c)$ Silicones can be used as heat insulator

$(d)$ Silica is soluble in $HF$

The correct statement$(s)$ is/are