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प्रश्न
The disposal of nuclear waste safely is a big challenge before scientists.
पर्याय
True
False
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उत्तर
True
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संबंधित प्रश्न
Compare and contrast bio-mass and hydro electricity as sources of energy.
Fill in the following blank with suitable word:
Uranium-235 atoms will split when hit by .......... This is called ...........
Fill in the following blank with suitable word:
In a nuclear power station, nuclear fission takes place in the .............
In the reactor of a nuclear power plant, name the material which is used:
(a) as a moderator
(b) to absorb radiations
(c) in the fuel rods
(d) in the control rods
(e) to carry away heat
The 'coolants' which can be used in the reactor of a nuclear power station are:
(a) liquid mercury and nitrogen dioxide
(b) liquid sodium and carbon dioxide
(c) liquid ammonia and carbon monoxide
(d) liquid boron and uranium oxide
One MeV of nuclear energy is equivalent to:
(a) 1.6 × 10−13 J
(b) 1.6 × 10−19 J
(c) 1.6 × 10−16 J
(d) 1.6 × 10−15 J
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
The mass numbers of four elements A, B, C and D are 2, 20, 135 and 235, respectively. Which one of them will be most suitable to make:
a hydrogen bomb?
Give a scientific reason.
It is absolutely necessary to control the fission reaction in nuclear power plants.
The element X has an atomic mass number of 238 and an atomic number
of 92. It emits an alpha particle forming an element y. Y can be represented
by
Which one of the following statements about alpha and beta particles is
correct?
What do you understand by radioactive decay? An isotope of Uranium `""_92^238 "U"` is radioactive and changes into Thorium 92 by the emission of an alpha particle. Write a symbolic equation for this decay process.
Complete the following nuclear change:
\[\ce{_92P^238->[-α] ...P1 ... ->[-β]...P2 ... ->[-β] ... P3 ...}\]
What will an alpha particle change into when it absorb one electron.
State charge and mass of β-particle.
State the energy conversion taking place in a solar cell.
Complete the following fission reaction:
\[\ce{_92U^235 _0n^1 -> _aSb^133 + _41Co^b + 4_0n_1 + energy}\]
Write down the values of a and b.
Copy and complete the nuclear reaction by filling in the blanks.
\[\ce{_92U^235 + _0n^1 -> _56Ba^{\underline{\phantom{....}}} + \underline{\phantom{..}}Kr^92 + 3 _0n^1}\]
Express 1 a.m.u. in MeV.
