Physics
In heating frozen foods in sealed pouches in a microwaves, why do you first poke holes in the pouch?

To allow the aroma of the food to come out through the holes
To allow the heat to get into the food through the hole
To allow the microwaves to get into the food through the holes
To prevent the steam pressure from bursting open the pouch

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Physics
Pressure Cooker cooks faster because

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

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