Chemical Engineering Mcqs

In the nuclear reaction, 93N239→ 94Pu239 + ?; the missing particle is a/an__________________?

• (A)  Electron
• (B)  Proton
• (C)  Neutron
• (D)  Position

Answer

Submitted By :Ali Uppal

The molecular weight of heavy water is_________________?

• (A)  10
• (B)  18
• (C)  20
• (D)  36

Answer

Submitted By :Ali Uppal

Pressure in a Pressurised Water Reactor (PWR) is used for ____________________?

• (A)  Maintaining constant pressure in the primary cooling circuit under varying loads
• (B)  Superheating the steam
• (C)  Pressurising the water in the primary coolant circuit
• (D)  None of these

Answer

Submitted By :Ali Uppal

The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element ?

• (A)  A + Z
• (B)  A – Z
• (C)  A
• (D)  Z

Answer

Submitted By :Ali Uppal

Hydrogen differs from deuterium in _____________ properties?

• (A)  Radioactive
• (B)  Physical
• (C)  Chemical
• (D)  All

Answer

Submitted By :Ali Uppal

Which of the following is artificially produced as it does not occur in nature ?

• (A)  Uranium-235
• (B)  Uranium-233
• (C)  Plutonium-239
• (D)  Both

Answer

Submitted By :Ali Uppal

Neutrons have mass approximately equal to that of _____________ atoms?

• (A)  Hydrogen
• (B)  Helium
• (C)  Deuterium
• (D)  None of these

Answer

Submitted By :Ali Uppal

The emission of an a-particle causes the resultant nucleus to have____________________?

• (A)  More atomic weight and less atomic number
• (B)  Less atomic weight and less atomic number
• (C)  Less atomic weight and more atomic number
• (D)  None of these

Answer

Submitted By :Ali Uppal

Atoms with same number of neutrons, but different number of nucleons are called___________________?

• (A)  Isotones
• (B)  Isobars
• (C)  Isotopes
• (D)  Isostere

Answer

Submitted By :Ali Uppal

Percentage of heavy water in ordinary water is around__________________?

• (A)  0.015
• (B)  7.54
• (C)  0.71
• (D)  32.97

Answer

Submitted By :Ali Uppal