Advertisements
Advertisements
प्रश्न
An atomic nucleus A is composed of 84 protons and 128 neutrons. It emits an α-particle and is transformed into nucleus B. Write down the composition of B.
उत्तर
A emits an α-particle, so in the nucleus of B, neutrons will be 128 – 2 = 126 and protons will be 84 – 2 = 82.
APPEARS IN
संबंधित प्रश्न
Arrange the following fuels in the order of increasing calorific values (keeping the fuel with lowest calorific value first):
LPG, Coal, Alcohol, Dung cakes, Diesel
Which one of the following is not renewable energy technology?
What is the source of energy of the sun and other stars?
One type of energy which has not been controlled so far is:
(a) ocean thermal energy
(b) nuclear fusion energy
(c) geothermal energy
(d) nuclear fission energy
A nuclear reaction is represented by the equation:
`""_1^2H+_1^2H->_2^3He+xc+E`
State two conditions under which such a reaction takes place.
The element `""_11^24 "Na"` changes to magnesium by the emission of a beta particle. Write down the symbolic equation for the beta emission.
What safety measures and needed in a nuclear power plant?
Draw a simplified labelled diagram of a hot cathode ray tube.
An isotope of uranium is 92Y238, i.e., it has mass number 235 and atomic number 92.
Find the number of protons and neutrons in its nucleus.
Give scientific reasons.
It is absolutely necessary to control the fission reaction in nuclear power plants.
