Materials and Construction

111. Cast iron vessels are not suitable for the storage of

1. Freon
2. H2SO4 (95%) at room temperature
3. H2SO4 (fuming)
4. Wet SO2

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112. Cast irons are generally specified by their

1. Carbon content
2. Tensile strength
3. Hardness
4. Manufacturing process

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113. Caustic soda can be stored in _________ drums.

1. Steel
2. Cast iron
3. Brass
4. Gun metal

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114. Caustic soda is produced in a mercury cell having anode and cathode made respectively of moving mercury and

1. Moving mercury and graphite
2. Graphite and moving mercury
3. Moving mercury and carbon
4. Moving mercury and crimped steel wire

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115. Caustic soda is transported in _________ lined containers.

1. Glass
2. Nickel
3. Neoprene
4. Either (B) or (C)

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116. Cementite is

1. Fe3C chemically
2. A compound of carbon and iron
3. Characterised by an orthorhombic crystal structure
4. All (A), (B) and (C)

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117. Centrifugal pump made of pyrex or glass can't be used to pump

1. Milk and fruit juices
2. Alkaline solutions
3. Dilute H2SO4 at room temperature
4. Brine

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118. Ceramic materials

1. Are exemplified by clay and mica
2. Are poor electrical conductors due to lack of free electrons
3. Never exhibit polymorphism
4. All (A), (B) and (C)

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119. Ceramic materials are

1. Organic in nature
2. Stronger in compression than in tension
3. Always amorphous in nature
4. Always bad heat conductors

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120. Ceramic materials fabrication cannot be done by

1. Welding
2. Slip casting
3. Extrusion
4. Plastic pressing

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