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161.

The time required for air seasoning of soft wood is

A.	15 to 30 days	B.	30 to 60 days
C.	60 to 90 days	D.	90 to 120 days

162.

The time required for seasoning of timber in kilm seasoning is

A.	2 to 5 days	B.	5 to 10 days
C.	10 to 20 days	D.	20 to 40 days

163.

The timber whose thickness is less than 5 cm and the width exceeds 12 cm, is called a

A.	board	B.	plank
C.	batten	D.	log

164.

The strength of timber is maximum in the direction

parallel

perpendicular

165.

An assembled product made up of veneers and adhesives is called

A.	board	B.	plank
C.	plywood	D.	batten

166.

The thickness of five-ply sheet varies from

A.	3 to 6 mm	B.	6 to 9 mm
C.	9 to 16 mm	D.	16 to 20 mm

167.

The thickness of lamin boards vary from

A.	5 to 12 mm	B.	12 to 15 mm
C.	12 to 25 mm	D.	25 to 30 mm

168.

The wood generally used for railway sleepers is

A.	mango	B.	kail
C.	babul	D.	deodar

169.

The chief ingredient of a paint is

A.	alcohol	B.	drier
C.	oil	D.	pigment

170.

The liquid medium used in oil paints is

A.	thinner	B.	alcohol
C.	linseed oil	D.	turpentine