Which of the following is not used as binders for mould materials?
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Which of the following is not used as an additive?
Nitriding process is used to increase surface hardness for which of the following materials?
The famous iron pillar located near Qutab Minar in New Delhi is made up of which material?
Which of the following is not a source of moulding sand?
Which of the following is not a type of moulding sand?
What is the percentage composition of clay in natural sand?
What is the percentage composition of water in natural sands?
What is mixed with natural sand to make it semisynthetic sand?
Which sand is used for casting cast irons and non-ferrous metals?
Natural sands are economical than synthetic sands.
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