1111. Teh carbonating tower used in solvay process of soda ash manufacture is made of :
A. Cast iron *
B. Stainless steel
C. Karbate
D. Lead lined steel
1112. Pick out the wrong statement pertaining to the properties of glasses . Glasses generally have :
A. High electrical insulation properties
B. Sharp melting points *
C. Low coefficient of thermal expansion
D. A much higher compressive strength than their tensile strengths
1113. The weathering index of a coal :
A. Provides an estimate of the ash fusion temperature
B. Is related to its calorific value
C. Is a measure of its size stability when stored and exposed to weather *
D. Is a gauge of its tendency to stick together
1114. Gun metal is an alloy of :
A. Nickel, tin and copper
B. Copper, tin and zinc
C. Copper, phosphorus and nickel
D. Manganese, phosphorus and nickel *
1115. Balls in a ball mill are usually made of :
A. Steel *
B. Cast iron
C. Stainless steel
D. Bronze
1116. Plasma is :
A. A high temperature neutral gas
B. Nothing but ionised gas *
C. A source of maximum pressure controllable and constant
D. Formed at very low temperature
1117. In a fuel cell, chemical energy is converted into :
A. Electrical energy directly *
B. Mechanical energy
C. Electrical energy and stored there in
D. None of these
1118. Bronze is an alloy of copper and :
A. Lead
B. Tin *
C. Nickel
D. Zinc
1119. Rotary kilns in cement industry are lined with ________ bricks :
A. Fire clay
B. Silica
C. Lead
D. High alumina and high magnesia bricks *
1120. In the kraft (Sulphate) process of the paper manufacture, the digestor is made of :
A. Cash iron
B. Stainless steel *
C. Karbate carbon
D. Wrought iron