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Materials and Construction

Materials and Construction
Which of the following is not a nickel based alloy?

Nimonics
Hastelloys
Babbit metal
Inconel

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Materials and Construction
__________ can replace tungsten in high speed steel,

Cobalt
Molybdenum
Chromium
Vanadium

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Materials and Construction
The softest material in Mho's scale (for measuring hardness) is

None of these
Gypsum
Rubber
Talc

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Materials and Construction
Coke oven regenerators are made of __________ bricks.

Fire clay
Silica
Low thermal conductivity
High electrical conductivity

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Materials and Construction
Polythene (low or high density) containers are not corroded by

Any of these
Sulphuric acid (10%) at room temperature
Sulphur trioxide at 60°C
Nitric acid (95%) at room temperature

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Materials and Construction
Nickel made/clad equipments are suitable for handling

Nitric acid & hydrochloric acid (conc)
Ammonia (both aqueous & anhydrous)
Fruit juices, milk & its products and caustic soda solution
Sulphuric acid (conc)

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