Fahrenheit and Centigrade scales have the same readings at _____________________?
A. -55°
B. -40°
C. -33°
D. -58°
Chemical Engineering Basics
Increasing sulphur content in pig iron tends to make it ________________?
Increasing sulphur content in pig iron tends to make it ________________?
A. Soft
B. Hard
C. Tough
D. Ductile & malleable
The substance used as a smoke screen in warfare is___________________?
The substance used as a smoke screen in warfare is___________________?
A. C2H2
B. SiCl4
C. P2O5
D. PCl5
The mechanism which changes the value of manipulated variable in response to the output signal from the control unit is called the___________________?
The mechanism which changes the value of manipulated variable in response to the output signal from the control unit is called the___________________?
A. Final control element
B. On-off control
C. Floating control action
D. None of these
Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of_____________________?
Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of_____________________?
A. 90% tungsten carbide and 10% cobalt
B. 70% aluminium oxide & 30% silica
C. 30% nickel, 15% chromium & 55% tungsten
D. 65% tungsten & 35% zirconium
Which of the following low melting alloy containing bismuth and lead is used for electric fuse ?
Which of the following low melting alloy containing bismuth and lead is used for electric fuse ?
A. Wood’s metal
B. Babbitt metal
C. Monel metal
D. Duralumin
Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be_____________________?
Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be_____________________?
A. 5
B. 1.25
C. 2.5
D. 3.75
Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of_________________?
Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of_________________?
A. Lumps
B. Pellets
C. Briquettes
D. Sinter
Brazing is the joining of metals_____________________?
Brazing is the joining of metals_____________________?
A. Without melting the base metal
B. With a non-ferrous filler
C. Both A. & B.
D. Neither A. nor (B)
Cementite is in the lamellar form in the _____________________ phase of steel ?
Cementite is in the lamellar form in the _____________________ phase of steel ?
A. Martenistic
B. Bainitic
C. Pearlitic
D. Ferritic