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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