________________ gas hampers oxygen from reaching the brain.

Bevel is used for ______

___________ are the rings of metal which can be used for fasten two members abutting each other.

Dovetail saw is used to cut ______

_____________ term is used to indicate the taking off the edge of corner or arris of a wooden piece.

The hazard due to fire spread into a building through the open air is known as__________

The hazard with concerns damage or destruction of building itself is known as the __________

The class of fire-load limiting between 2.23×10^6 to 4.60×10^6 is considered as __________