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1.
Which of the following is used for removing air bubbles from glass during its manufacture?
2.
Optic fibres are mainly used for which of the following?
3.
In vulcanization, natural rubber is heated with
4.
Paper is manufactured by
5.
The element common to all acids is
6.
Monazite is an ore of
7.
Production of chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which of the following domestic products?
8.
Bell metal is an alloy of
9.
Water is a good solvent of ionic salts because
10.
The main constituents of pearls are