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

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

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

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123.  Duco is one of the patent forms of
A. emulsion paints
B. plastic paints
C. bituminous paints
D. cellulose paints.

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124. Varnish is a transparent or semi-transparent solution of resinuous substances in
A. alcohol
B. linseed
C. turpentine
D. all the above.

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125. The most important constituent of an oil paint, is
A. thinner
B. vehicle
C. pigment
D. all the above.

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126. The most important constituent of varnish, is
A. drier
B. solvent
C. resin
D. all the above.

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