Physics
Ice is packed in saw dust because

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

ANSWER DOWNLOAD EXAMIANS APP

Physics
Pressure Cooker cooks faster because

Higher temperature is attained for cooking
The material of the cooker is a good conductor
It cooks the food at low pressure
Boiling point decreases with rise of pressure

ANSWER DOWNLOAD EXAMIANS APP