Q. Pyrex glass is otherwise known as _________ glass.

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Q. Pyroceram glass softens above ______

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Q. Cork is composed of _____ air.

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Q. A copolymer of butadiene and acrylonitrile is known as __________

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Q. What is the percentage of elongation of styrene butadiene rubber?

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Q. Isoprene added to isobutylene gives _______

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Q. What is the common name for polysulphide rubber?

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Q. Which of the following is not a method of fabrication of rubber?

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Q. Mica manufactured by internal resistance melting method is melted at ______

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Q. Ruby mica is more commonly known as ______

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Q. Natural muscovite is normally stable up to ______

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Q. Which of the following is not a form of mica?

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Q. Which of the following varnishes is oxidizing in nature?

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Q. Dissolved resins in alcohol produce ______ varnishes.

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Q. Which of the following is not a property of insulating varnishes?

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Q. Silicone varnishes have a ______ operation.

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Q. Acrylic varnishes are generally used in _______ gases.

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Q. What kind of varnishes are used for most temperatures or classes?

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Q. At what temperature is Class F operation carried out?

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Q. Which of the following is not a coating method for varnishes?

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