The substance added to decolourise the glass articles during manufacture of glass is

The substance added to decolourise the glass articles during manufacture of glass is
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1 Answer

Answer :

Manganese dioxide.
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The ultrapure glass used to manufacture optical fibers is approximately ___pure ∙ a. 99.9 % ∙ b. 99.99 % ∙ c. 99.999 % ∙ d. 99.9999 %

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Raw materials used for the manufacture of glass are (1) sand, soda, limestone (2) sand, charcoal, soda (3) limestone, charcoal, sulphur (4) sand, sulphur, soda

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The process of gradual cooling of glass articles to room temperature is called

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Why should glass articles be annealed?

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Substance added to ore to remove impuri- ties is known as?

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A student took Sodium Sulphate solution in a test tube and added Barium Chloride solution to it. He observed that an insoluble substance has formed. The colour and molecular formula of the insoluble substance is (a) Grey, Ba2SO4 (b) Yellow, Ba(SO4)2, (c) White, BaSO4 (d) Pink, BaSO4,

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The substance added to improve the characteristics of writing paper is

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Which of the following is a correct observation when water is added to substance ̳X‘ (a) vigorous bubbling and a hissing sound (b) slow bubbling with no sound (c) vigorous bubbling with evolution of heat and a hissing sound (d) only hissing sound

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Last Answer : (c) vigorous bubbling with evolution of heat and a hissing sound