561. Plywood is obtained by gluing wooden sheets at a pressure of
A. 100 to 150 N/cm2
B. 100 to 130?C
C. both (a) and (b)
D. Neither (a) nor (b).

562. Plywood is normally available
A. 1 mm thick
B. 2 mm thick
C. 2 to 3 mm thick
D. 3 mm to 4 mm thick.

563. Plywood is made from
A. common timber
B. bamboo fibre
C. teak wood only
D. asbestos sheets.

564. Fibre boards can be
A. distempered
B. painted
C. painted and distempered
D. used for furniture.

565. The most commonly used base for timber painting, is
A. red lead
B. zinc white
C. white lead
D. titanium white.

566. The commonly used base for iron and steel work, is
A. red lead
B. zinc white
C. white lead
D. titanium white.

567. A volatile substance added to a paint to make its application easy and smooth, is known as
A. base
B. solvent
C. vehicle
D. none to these.

568. Most commonly used solvent in oil paints, is
A. petroleum
B. spirit
C. coaltar
D. turpentine.

569. Turpentine oil is used in paints as
A. thinner
B. vehicle
C. base
D. drier.

570. Linseed oil is used in paints as
A. thinner
B. vehicle
C. base
D. drier.

NOTE
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