91. Which of the following is resistant to the action of both heat & chemicals?
A. Boro silicate glass
B. Silica glass
C. Soda lime glass
D. None of these
✅ The correct answer is option A.
Chemical Engineering
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92. Stresses encountered in the metal forming processes are less than the __________ of the material.
A. Fracture strength
B. Yield strength
C. Elastic limit
D. Limit of proportionality
✅ The correct answer is option A.
93. One ton of refrigeration is not equivalent to the heat removal rate of
A. 200 BTU/minute
B. 50 kcal/minute
C. 50 kJ/sec
D. 3.5 KW
✅ The correct answer is option C.
94. Hot extrusion process is not used for making
A. Cast iron pipe for domestic water supply
B. Aluminium curtain rods
C. Stainless steel tubes used in furnitures
D. Any of these
✅ The correct answer is option A.
95. What is the percentage of chromium in 18-4-1 high speed steel?
A. 1
B. 4
C. 18
D. 23
✅ The correct answer is option C.
96. Consumable electrodes are used in the __________ welding.
A. Gas
B. Arc
C. Thermit
D. Resistance
✅ The correct answer is option B.
97. The materials which fracture even at small strains are termed as brittle, while those materials which exhibit an appreciable deformation before failure are termed as
A. Rigid
B. Tough
C. Ductile
D. Plastic
✅ The correct answer is option C.
98. Square steel key is normally strong in failure by shear & crushing. Keys are normally made of __________ steel bars.
A. Hot rolled mild
B. Cold rolled mild
C. Forged
D. Machinable stainless
✅ The correct answer is option B.
99. If a solid is compressed adiabatically in its elastic range, its __________ remains constat
A. Internal energy
B. Enthalpy
C. Entropy
D. Temperature
✅ The correct answer is option C.
100. Particle nature of cathode rays is proved due to the fact that they
A. Travel in a straight line
B. Get deflected by magnetic electric field
C. Produce fluorescence
D. Heat the exposed material
✅ The correct answer is option B.