A. X-ray
B. Magnetic particle
C. Dye penetrant
D. Ultrasonic
✅ The correct answer is option C.
Basic Chemical Engineering MCQs
Which of the following is an example of stress corrosion ?
A. Season cracking of brass
B. Caustic embrittlement of steel
C. Both (a) & (b)
D. Neither (a) nor (b)
✅ The correct answer is option C.
Heat flow across a hollow sphere of inner radius ‘r₁’ and outer radius ‘r₂’ is directly proportional to
A. (r₂ – r₁)/(r₁ – r₂)
B. (r₂ . r₁)/(r₂ – r₁)
C. (r₁ + r₂)/(r₁ . r₂)
D. (r₁ . r₂)/(r₁ + r₂)
✅ The correct answer is option B.
Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.
A. Cementite
B. Austenite
C. Martensite
D. Pearlite
✅ The correct answer is option B.
Percentage of differential pressure lost in a venturimeter with a tapering of 15° may be about
A. 1
B. 10
C. 25
D. 50
✅ The correct answer is option B.
Slight displacement of a floating body in liquid makes it to oscillate about its
A. Centre of pressure
B. Centre of gravity
C. Metacentre
D. Centre of pressure
✅ The correct answer is option C.
Specific heat of an ideal gas depends upon its
A. Molecular weight
B. Pressure
C. Temperature
D. Volume
✅ The correct answer is option C.
__________ flux is used for the extraction of metal from its self fluxing ores.
A. No
B. Acid
C. Basic
D. Neutral
✅ The correct answer is option A.
Thermoplastics are never moulded using
A. Injection moulding
B. Blow moulding
C. Extrusion
D. Compression moulding
✅ The correct answer is option D.
While the recrystallisation temperature for pure metals is 0.3 Tm, the same for alloys is equal to __________ x Tm (where, Tm Melting temperature).
A. 0.25
B. 0.45
C. 0.70
D. 0.95
✅ The correct answer is option C.