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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

Pick out the wrong statement?
A The nucleus of a hydrogen atom is identical with a proton
B A, β-ray particle is identical with an electron
C Mass of an electron is about 1/1800th of the lightest nucleus
D Positron is heavier than a proton
Correct Answer: Positron is heavier than a proton
Pick out the wrong statement?
A The ratio of the density of the ‘nucleus’ to that of the ‘atom’ is 1012
B α-particle is identical with a doubly charged helium ion
C The mass of deuterium atom is half that of helium atom
D Gamma rays are high energy electrons
Correct Answer: Gamma rays are high energy electrons
Pick out the correct statement?
A Positron is the antiparticle of electron
B In α-decay, the ratio of neutron to proton decreases
C Ionising power of β-rays is higher than that of α-rays
D Speed of α-rays is more than that of γ-rays
Correct Answer: Positron is the antiparticle of electron
Pick out the correct statement?
A Loss of electrons from neutral atoms produces negative ions
B The radius of nucleus & atomic size are of the order of 10-12 cm & 10-8 cm respectively
C Gain of electrons by neutral atoms form cations
D Proton to neutron ratio in a stable nucleus is 2 : 1
Correct Answer: The radius of nucleus & atomic size are of the order of 10-12 cm & 10-8 cm respectively
Pick out the wrong statement?
A The disintegration rate of a radioactive substance cannot be increased by heating it
B Electrons have negligible mass and unit negative change
C Deuterium atom has one proton and two neutrons in its nucleus
D Cadmium is capable of absorbing neutrons
Correct Answer: Deuterium atom has one proton and two neutrons in its nucleus
Which one is the radioactive isotope of hydrogen ?
A Deuterium
B Ortho-hydrogen
C Tritium
D None of these
Correct Answer: Tritium
Candu reactor is a ______________ nuclear reactor?
A Natural uranium fuelled heavy water cooled & moderated
B Highly enriched uranium (85% U-235) fuelled
C Homogeneous
D Fast breeder
Correct Answer: Natural uranium fuelled heavy water cooled & moderated
Heavy water is used as a moderator in a _____________________?
A Pressurised water reactor (PWR)
B Boiling water reactor (BWR)
C Candu reactor
D Molten sodium cooled reactor
Correct Answer: Candu reactor
Which is a fertile nuclear fuel ?
A U-233
B U-235
C Pu-239
D Th-232
Correct Answer: Th-232
Enriched uranium means that, it contains___________________?
A More than 0.71% of U-235
B Only fertile material
C Only fissile material
D No impurities
Correct Answer: More than 0.71% of U-235
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