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NEET UG CHEMISTRY MCQ: STRUCTURE OF ATOM
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Assertion : The neutrons are better initiators of nuclear reactions, than the protons, deutrons or particles of the same energy.
Reason : Neutrons are uncharged particles and hence, they are not repelled by positively charged nucleus.
Reason : Neutrons are uncharged particles and hence, they are not repelled by positively charged nucleus.
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Correct option: A
If both assertion and reason are true and the reason is the correct explanation of the assertion.
Option A is correct because neutrons are uncharged and thus not repelled by the nucleus, making them effective initiators of nuclear reactions.
More Questions from STRUCTURE OF ATOM
Practice All Chapter MCQs β
Which of the following pairs have identical values of e/m?
The correct de Broglie relationship is:
Assertion: Unlike sound waves, electromagnetic waves do not require medium and can move in vacuum.
Reason: The oscillating electric and magnetic fields produced by oscillating charged particles are parallel to each other and both are perpendicular to the direction of propagation of the wave. S-I: The orbital has maximum electron density along the y axis and its nodal plane is xz plane.
S-II : For a given atom, for all values of , the -orbitals have the same shape, but the overall size decreases as '' increases. S-I: Elements like and were discovered when their minerals were analysed by spectroscopic methods.
S-II: The element helium was discovered in the sun by spectroscopic method. In which one of the following, the number of protons is greater than number of neutrons but number of protons is less than the number of electrons?
Reason: The oscillating electric and magnetic fields produced by oscillating charged particles are parallel to each other and both are perpendicular to the direction of propagation of the wave. S-I: The orbital has maximum electron density along the y axis and its nodal plane is xz plane.
S-II : For a given atom, for all values of , the -orbitals have the same shape, but the overall size decreases as '' increases. S-I: Elements like and were discovered when their minerals were analysed by spectroscopic methods.
S-II: The element helium was discovered in the sun by spectroscopic method. In which one of the following, the number of protons is greater than number of neutrons but number of protons is less than the number of electrons?