Q. The electrical conductivity of a __________ decreases with rise in temperature.

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Q. Which one occupies the lowermost position in the electromotive series of metals ?

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Q. Addition of nickel to copper improves its

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Q. Presence of even 0.005% of __________ in copper makes it highly brittle, rendering it useless for wire-drawing.

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Q. Ceramic materials fabrication can not be done by

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Q. Which has the maximum melting point out of the following ?

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Q. Cast iron is

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Q. Which of the following has no effect on the carbide forming tendency in steels ?

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Q. Approximate value of the modulus of elasticity for steel is about __________ x 10⁶ kg/cm².

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Q. High speed cutting tool steels contain about __________ percent of tungsten.

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Q. The 'bomb' in the bomb calorimeter is made of

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Q. Which of the following is produced by condensation polymerisation ?

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Q. The crystal structure of most of the common metals is

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Q. Telfon (PTFE) is corroded by

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Q. Hastelloy C is a good material of construction in chemical process industry, since it is

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Q. Mixing vessel used for the chlorination of methane to produce methyl chloride is made of

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Q. The loss of strength in compression which occurs, when there is a gain of strength in tension due to over loading is called

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Q. Pick out the wrong statement.

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Q. For storing water and acid free benzol, use a __________ vessel.

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Q. The chlorinator used in the manufacture of DDT is made of

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