A. Its structure is very compact
B. No free electrons are present
C. It is of crystalline nature
D. There are only carbon atoms present
✅ The correct answer is option B.
Basic Chemical Engineering MCQs
“Internal energy of a gas obeying Vanderwall’s equation of state, (p + a/v²)(V – b) = RT , depends upon its”
A. Pressure & temperature
B. Pressure & specific volume
C. Temperature & specific volume
D. Temperature only
✅ The correct answer is option A.
Disposable patterns are made of
A. Metal
B. Polystyrene
C. Rubber
D. Wood
✅ The correct answer is option B.
Filler metal is not used in the __________ welding.
A. Seam
B. Electric spot
C. Projection
D. All of the above
✅ The correct answer is option D.
The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the
A. Resilience
B. Toughness
C. Ductility
D. Impact strength
✅ The correct answer is option A.
Chromium molybdenum steel can not be welded using __________ welding.
A. Thermit
B. Electrical resistance
C. Oxy-acetylene
D. Any of these
✅ The correct answer is option B.
Use of flux during soldering is done to
A. Increase flidity of solder by lowering its melting temperature
B. Prevent oxide formation
C. Wash away surplus solder
D. Full up the joint gap
✅ The correct answer is option B.
Optical activity is a/an __________ property.
A. Additive
B. Constitutive
C. Both A & B
D. Neither A nor B
✅ The correct answer is option C.
The concentration of (H⁺) ions is 4 x 10⁻⁵ in a solution. Then pH of the solution will be (Given log 4 = 0.6 )
A. 4.4
B. 5.6
C. 8.4
D. 2.4
✅ The correct answer is option A.
Pick out the wrong statement about the machinability of metals. Machinability of a metal
A. Decreases with increase in strain hardening tendencies
B. Decreases with increase in hardness, in general
C. Depends on the composition, microstructure and physical & mechanical properties
D. Decreases with increases in tensile strength & decrease in grain size
✅ The correct answer is option D.