Chemical Engineering Mcqs

If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same isotope will be ____________ days?

• (A)  5
• (B)  10
• (C)  20
• (D)  30

Answer

Submitted By :Ali Uppal

The critical mass of a fissionable material can be reduced by__________________?

• (A)  Heating it
• (B)  Cooling it
• (C)  Surrounding it by neutron reflecting material
• (D)  Surrounding it by neutron absorbing material

Answer

Submitted By :Ali Uppal

Energy equivalent to one atomic mass unit (amu) is ______________ MeV?

• (A)  9.31
• (B)  93.1
• (C)  931
• (D)  9310

Answer

Submitted By :Ali Uppal

Which of the following is the most harmful for the human being ?

• (A)  β-rays
• (B)  X-rays
• (C)  γ-rays
• (D)  Ultra violet rays

Answer

Submitted By :Ali Uppal

A fast breeder reactor employs___________________?

• (A)  Graphite as moderator
• (B)  Water as coolant
• (C)  Molten sodium as coolant as well as moderator
• (D)  U-235 as fuel

Answer

Submitted By :Ali Uppal

Both tritium and deuterium have the same number of_______________?

• (A)  Neutrons
• (B)  Electrons
• (C)  Protons
• (D)  Nucleons

Answer

Submitted By :Ali Uppal

Main source of ______________ is monazite sand?

• (A)  Uranium
• (B)  Polonium
• (C)  Hafnium
• (D)  Thorium

Answer

Submitted By :Ali Uppal

Research reactors are normally meant for_____________________?

• (A)  Producing high neutron flux 1012-1013 neutrons/cm2, sec and studying the effect of neutron bombardment on different materials
• (B)  Accelerating the neutrons
• (C)  Power generation
• (D)  None of these

Answer

Submitted By :Ali Uppal

Artificially produced radioactive isotopes are used for____________________?

• (A)  Power generation
• (B)  Treatment of certain diseases
• (C)  Initiating nuclear fission and fusion
• (D)  All

Answer

Submitted By :Ali Uppal

Which is a fertile nuclear fuel ?

• (A)  U-233
• (B)  U-235
• (C)  Pu-239
• (D)  Th-232

Answer

Submitted By :Ali Uppal