Related Questions

ট্রিটিয়ামের অর্ধ-জীবন 12.5 বছর। একখণ্ড ট্রিটিয়ামের  78 অংশ ক্ষয় হতে কত সময় লাগবে? (The half life of Tritium is 12.5 years. To decay 78 parts of a piece of Tritium how much time is required?)
A 12.5 years
B 25 years
C 37.5 years
D 50 years
In order to have constant chain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be
A Greater than 1.0
B Less than 1.0
C Equal to zero
D Equal to 1.0
Out of the following, nucleus of __________ atom contains the largest number of neutrons.
A U-235
B U-238
C U-239
D Pu-239
Radon 222 এবং Radon-220 উভয়ই Radon এর আইসোটোপ। যদি Radon-222 এর নিউক্লিয়াসে 136 টি নিউট্রন থাকে তাহলে Radon-220 এর নিউক্লিয়াসে কতগুলো প্রোটন থাকবে? ( Radon-222 and Radon-220 are the isotopes of Radon. If Radon-222 has 136 neutrons then what will be the number of protons in the nucleus of Radon-220?)
A 84
B 86
C 134
D 136
There are 15 protons and 22 neutrons in the nucleus of an element. What is its mass number?
A 22
B 7
C 37
D 15
The atomic number is the number of neutrons in the nucleus.
A True
B False
The decay product of tritium (a beta emitter) is
A Lithium
B Helium
C Deuterium
D Hydrogen
Both tritium and deuterium have the same number of
A Neutrons
B Electrons
C Protons
D Nucleons
Neutrons have mass approximately equal to that of __________ atoms.
A Hydrogen
B Helium
C Deuterium
D None of these
A moderator __________ the neutrons.
A Slows down
B Absorbs
C Accelerates
D Reflects

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