Physics
The sky appears blue because

All colours interfere to produce blue
The atmosphere scatters blue colour more than the others
In white light, the blue component dominates
It is actually blue

ANSWER DOWNLOAD EXAMIANS APP

Physics
Ice is packed in saw dust because

Saw dust is a good conductor of heat.
Saw dust is poor conductor of heat.
Saw dust will not get melted easily.
Saw dust does not stick to the ice.

ANSWER DOWNLOAD EXAMIANS APP