MCQ
An exothermic reaction is one which
- ATakes place only on heating
- BIs accompanied by a flame
- CIs accompanied by a absorption of heat
- ✓Is accompanied by evolution of heat
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$(a)$ $R_2SiO$ 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
