Chemistry
Metal are good conductors, because

The molecules in them are very close to each other
The molecules in them collide very freely
They contain free electrons
They contain reflecting surface

ANSWER DOWNLOAD EXAMIANS APP

Chemistry
What are the components responsible for acid rain?

Nitrogen monoxide (NO) and Carbon monoxide (CO)
Sulphur dioxide (SO2) and Nitrogen oxides (NOx)
Carbon dioxide (CO2) and Carbon monoxide (CO)
Oxides of carbon (COx) and Oxides of nitrogen (NOx)

ANSWER DOWNLOAD EXAMIANS APP