121.
The directional solidification in casting can be improved by using

122.
In a compound die

123.
In a simple die

124.
Linde welding uses

125.
A neutral flame is obtained by supplying

126.
The electrodes used in spot welding have a tip of

127.
The cold chisels are made by

128.
The minimum size of a bloom is

129.
When the file is moved to and fro over the work, it is known as

130.
The binder commonly used in making oil sand, is

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