ECAT Pre General Science Chapter 21 online mcq test with answers for Physics chapter 21 (Nuclear Physics)

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ECAT Physics Chapter 21 Important MCQ's

Sr.#	Question	Answer
1	The half lie of radium-226 is	A. 238 years B. 4.5 x 10⁹days C. 1620 years D. 332 years
2	The distance travelled byα-particle in a medium before coming to rest, is called	A. range ofγ-particle B. range of neutrons C. range of particle D. none of these
3	Which of these is not a radiation detector	A. Wilson cloud chamber B. cyclotron acceleration C. Geiger Miller counter D. solid state detector
4	Charge on proton is	A. 1.59 x 10^-9C B. 1.59 x 10^-7C C. -1.59 x 10^-19C D. 1.59 x 10^-19C
5	The range of particle depends upon the factor	A. charge, mass and energy of particle B. density of medium C. ionization potential of the atoms D. all the above
6	Gamma rays consist of steam of	A. electron B. proton C. photons D. all of these
7	A curie represents a very strong source of	A. α-particle B. β-particle C. γ-particle D. none of these
8	Proton was discovered by Rutherford in	A. 1915 B. 1906 C. 1910 D. 1920
9	Referring to the above figure, we can say that of all the elements, the most stable element is	A. Phosphours B. Iron C. uranium D. Lithium
10	Electrons are	A. positive charged B. negatively charged C. massless D. neutral

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ECAT Pre General Science Physics Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 21 Nuclear Physics

ECAT Pre General Science Physics Chapter 21 Nuclear Physics

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

γ-rays behave like a particle because they explain the

The number of all the protons and neutrons in a nucleus is known as

Radioactivity

Different radioactive material have

An alpha particle has a charge of

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Curie is a unit of

Proton was discovered by Rutherford in

Charge on proton is

The missing mass which is converted to energy in the formation of nucleus, is called

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

A mass difference of 0.0012 u is equivalent to and energy of:

U-238 present in the natural uranium is about:

The half life of uranium-238 is

Nucleus consists of

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

The number if neutrons in the nucleus of 92U235are

The most abundant isotope of neon is

The half lie of radium-226 is

The unit of decay constant is:

Radioactivity is

The number of protons inside a nucleus is called

Which of the following material has longer half life

The range of particle depends upon the factor

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Which of the following material has smaller has life

Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called

Neutron was discovered in

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ECAT Physics Chapter 21 Important MCQ's

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The number if neutrons in the nucleus of ₉₂U²³⁵are