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	In radioactive decay, the new element which is formed due to the disintegration of original element is called	A. element B. daughter element C. parent element D. none of these
2	The chemical behaviour of an atom is determined by	A. binding energy B. atomic number C. mass number D. number of isotopes
3	Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called	A. deuterium B. protium C. tritium D. none of these
4	The missing mass which is converted to energy in the formation of nucleus, is called	A. packing fraction B. mass defect C. binding energy D. none of these
5	Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called	A. deuteron B. deterium C. protium D. tritium
6	Nuclei that have the same charge number but different mass number are called	A. isotones B. isomers C. isotopes D. isobars
7	Mass of proton is	A. 1.67 x 10^-27kg B. 1.67 x 10^-31kg C. 1.66 x 10^-34kg D. 1.67 x 10^-17kg
8	For an atom having atomic number Z and atomic weight A, the number of electron in an atoms	A. A - Z B. A + Z C. Z D. A
9	How much time, theα-particle more massive than an electron	A. 600 B. 7000 C. 5000 D. 15000
10	Which of the following material has smaller has life	A. uranium B. polonium C. radium D. radian

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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

Three quarks make:

Radioactivity was discovered by:

The range ofβ-particle in air is greater than that ofα-particle by

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

Radioactivity

The half lie of radium-226 is

Nucleus consists of

Curie is a unit of

The unit of decay constant is

Radiation detector are used to

Nucleon means:

The half life of radioactive substances depends upon

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

U-238 present in the natural uranium is about:

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

After alpha decay the atomic number of the atom

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

Different radioactive material have

A pair of quark and antiquark makes a:

The energy is found from Einstein's mass energy relation is called

In radio-active decay, the original element which disintegrate to another element is called

Neutron was suggested to be in the nucleus by:

β-particles are easily deflected by collisions than heavy

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

The diameter of an atom is of the order

The nucleus left after the emission of some radiation is called:

Mass of proton is of order of

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

The chemical behaviour of an atom is determined by

For Protium, the mass defect is:

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ECAT Physics Chapter 21 Important MCQ's

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