71.
Acetylene gas is stored in cylinders in

72.
Loam sand is a mixture of

73.
Green sand is a mixture of

74.
The blank diameter used in thread rolling will be

75.
The operation of cutting of a flat sheet to the desired shape is called

76.
During cold working process

77.
Most of the oxyacetylene welding is done with

78.
The width of slot cut by a hacksaw blade is _______ the width of the blade.

79.
The instrument which has all the features of try-square, bevel protractor, rule and scriber, is

80.
In a hot chamber die casting machine

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