B:-Class B
C:-Class C
D:-Class D
Correct Answer:- Option-C

Question79:-Class A fire extinguishers type contains
A:-Carbon dioxide gas under pressure
B:-Bi carbonate of soda solution and sulphuric acid
C:-Solution of aluminium sulfate and bicarbonate of soda
D:-Dry chemical, granular type material
Correct Answer:- Option-B

Question80:-The defect take place in the blanket due to the use of unsuitable
chemicals is called

A:-Emulsification
B:-Glazing

C:-Paper sticking
D:-Swelling

Correct Answer:- Option-D

Question81:-Which fold is made at right angle to the preceding fold by changing the
direction of the sheet 90° before the second fold is made?

A:-Accordion
B:-Parallel
C:-Right - angle
D:-Left - angle
Correct Answer:- Option-C
Question82:-The false feature about the made end paper is
A:-The made end paper has two fly leaves and one made end leaf

B:-Three folded sheets or six open sheets are used to prepare one made end
paper

C:-The fourth end sheet is tipping sheet
D:-This end paper is very simple and used in paper back cover books
Correct Answer:- Option-D

Question83:-A method in which metal wire is forced through the folded edges of a
signature and formed into staples to hold the pages together is called

A:-Saddle stitching
B:-Side stitching
C:-Wire rolling

D:-Wire sewing