‘Hypersil’ is a ______________ steel?
‘Hypersil’ is a ______________ steel?
A. High speed
B. Silicon
C. Molybdenum
D. Tungsten
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Presence of even 0.005% of _____________ in copper makes it highly brittle, rendering it useless for wire-drawing?
Presence of even 0.005% of _____________ in copper makes it highly brittle, rendering it useless for wire-drawing?A. Oxygen
B. Arsenic
C. Antimony
D. BismuthWhich of the following is the most widely used insulating material for steam carrying pipelines ?
Which of the following is the most widely used insulating material for steam carrying pipelines ?A. Ceramic fibre blanket
B. Glass wool and 85% magnesia
C. Vermiculite
D. Slag woolSpecify the material of construction suitable for handling concentrated HNO3 at 100°C ?
Specify the material of construction suitable for handling concentrated HNO3 at 100°C ?A. High silicon iron, Kel-F and Teflon
B. Tin and wood
C. Silicone rubber
D. Stainless steelEvaporators used in caustic soda recovery and production plant are made of_______________?
Evaporators used in caustic soda recovery and production plant are made of_______________?A. Monel metal
B. Gun metal
C. Wood metal
D. Babbitt metalAll materials obey Hooke’s law within elastic limit. When elastic limit is reached, the tensile strain__________________?
All materials obey Hooke’s law within elastic limit. When elastic limit is reached, the tensile strain__________________?A. Increases very quickly
B. Decreases very quickly
C. Increases in proportion to stress
D. Decreases in proportion to stressAn alloy used as thermocouple material comprises of 40% nickel and 60% copper. It is called____________________?
An alloy used as thermocouple material comprises of 40% nickel and 60% copper. It is called____________________?A. Constantan
B. Kanthal
C. Chromel
D. German silver