Related Questions

The major constituent of laminate of safety glass, which holds the broken glass, pieces in their places during accident (and thus minimises the danger from flying glass fragments) is
A Polyvinyl alcohol
B Polyvinyl acetale
C Polyvinyl butyral
D PVC
__________ glass is used for the manufacture of optical glass.
A Pyrex
B Soda
C Flint
D Crooke's
In distributing milk at a summer camp it is found that a quart of milk will fill either 3 large glass tumblers. How many small glass tumblers can be filled with one large glass tumbler ?
A 11/5
B 7/5
C 5/3
D 7/3
In distributing milk at a summer camp it is found that a quart of milk will fill either 3 large glass tumblers or 5 small lass tumblers. How many small glass tumblers can be filled with one large glass tumbler?
A 11/5
B 7/5
C 5/3
D 7/3
A glass when full of milk, weighs 1 kg. It weighs 0.75 kg when the glass is half full. What is weight of the empty glass?
A 0.25 kg
B 0.35 kg
C 0.40 kg
D 0.50 kg
Frother is added in the froth floatation cell used in ore beneficiation to stabilise the air bubbles (i.e., froth), which will hold the ore particles, but it does not affect the floatability of minerals. Which of the following is not used as a frother?
A Cresylic acid
B Xanthaies
C Pine oil
D All of the above
Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.
A CaO
B MnO2
C ZnO
D FeS
If 15 men working independently and at the same rate can manufacture 27 baskets in an hour, how many baskets would 45 men working independently and at the same rate manufacture in 40 minutes?
A 27
B 35
C 40
D 54
If 15 men working at the same rate can manufacture 27 baskets in an hour, how many baskets would 45 men manufacture in 40 minutes?
A 27
B 54
C 35
D 40
Which of the following is not a raw material used for the manufacture of ordinary glass?
A Iron oxide
B Soda ash
C Limestone
D Silica

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