A. Work hardening
B. Bauschinger effect
C. Creeping effect
D. Stress recovery effect
✅ The correct answer is option B.
Basic Chemical Engineering MCQs
While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterised by the
A. Low impact strength
B. High flexibility
C. Better finish and surface appearance
D. High plastic deformation
✅ The correct answer is option A.
Unit molar solution of __________ is the best conductor of electricity.
A. Sodium chloride
B. Acetic acid
C. Sulphuric acid
D. Sucrose
✅ The correct answer is option C.
For preparation of porous bearings by powder metallurgy, preferred particle shape is
A. Spherical
B. Nodular
C. Irregular
D. No preferred shape
✅ The correct answer is option A.
Basicity [%Cao + %MgO/% SiO₂) of the slag in Indian blast furnace is in the range of
A. 0.7-1.0
B. 1.1-1.4
C. 1.5 – 1.8
D. 2.0 – 2.5
✅ The correct answer is option B.
In a totally irreversible isothermal expansion process for an ideal gas, ΔE = 0, ΔH = 0. Then ΔQ and ΔS will be
A. ΔQ = 0, ΔS=0
B. ΔQ = 0 , ΔS = +ve
C. ΔQ = 0, ΔS = -ve
D. ΔQ = +ve , ΔS= +ve
✅ The correct answer is option B.
A metal having a Poisson’s ratio = 0.3 is elastically deformed under uniaxial tension. If the longitudinal strain = 0.8, then the magnitude of thickness strain is
A. -0.8
B. 0.8
C. +0.08
D. -0.24
✅ The correct answer is option D.
Metal cutting by oxy-acetylene flame is accomplished by the __________ of the metal.
A. Burning
B. Intensive oxidation
C. Evaporation
D. None of these
✅ The correct answer is option B.
Cast iron compared to steel is better in
A. Ductility
B. Strength
C. Malleability
D. Fluidity & castability
✅ The correct answer is option D.
α-rays are
A. Negatively charged
B. Positively charged
C. Neutral
D. Same as X-rays
✅ The correct answer is option B.