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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

All Topics  9594

Which of the following has the highest density and the lowest melting point ?
A Stainless steel
B Titanium
C Lead
D Aluminium
Correct Answer: Lead
Which of the following is the hardest _______________?
A Cementite
B Pearlite
C Austenite
D Ferrite
Correct Answer: Austenite
For platinum thermocouples, lead wires are made of___________________?
A Copper & copper-nickel alloys
B Copper & iron
C Iron & nickel
D Tin & nickel
Correct Answer: Copper & copper-nickel alloys
Which of the following is the lightest of engineering metals ?
A Magnesium
B Aluminium
C Titanium
D Tin
Correct Answer: Magnesium
Pick out the wrong statement?
A The toughness of a material decreases, when it is heated
B Crane hooks are normally made of wrought iron
C Cold working of a metal decreases its fatigue strength
D The temperature at which new grains are formed in a metal is known as the recrystallisation
Correct Answer: Cold working of a metal decreases its fatigue strength
Pick out the wrong statement?
A Pure rubber is as useless as pure gold as a material of construction
B Thermal conductivity of aluminium is higher than that of copper; hence it is increasingly used for utensil making
C Copper has poor weldability
D Reinforced plastics are made from both thermoplastic as well as thermosetting plastics
Correct Answer: Thermal conductivity of aluminium is higher than that of copper; hence it is increasingly used for utensil making
Pick out the wrong statement?
A Wrought iron contains about 0.02% carbon
B Wrought iron cannot be easily forged and welded
C The chilled cast iron does not contain graphite
D Spheroidal grey cast iron contains graphite flakes
Correct Answer: Wrought iron cannot be easily forged and welded
Pick out the correct statement?
A Stainless steel is nothing but chromium coated steel
B Hardening of a soft metal can be done by alloying it with another metal or non-metal
C Plastic deformation of a material is its temporary distortion under the action of applied stress
D Rusting of iron is not electrochemical in nature
Correct Answer: Hardening of a soft metal can be done by alloying it with another metal or non-metal
Pick out the wrong statemen?
A Hardening makes the steel more brittle
B High alloy steels contain more than 50% alloying element
C 18/8 stainless steel is a magnetic steel
D Both B. and C.
Correct Answer: Both B. and C.
Pick out the wrong statement ?
A Alloys are harder than their component elements
B Presence of silicon in steel decreases its electrical resistance
C Karbate is an acid resistant material of construction
D Nichrome, a steel alloyed with 10% Ni and 20% Cr can be used upto a temperature of 1100°C
Correct Answer: Presence of silicon in steel decreases its electrical resistance
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