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NEET UG CHEMISTRY MCQ: STRUCTURE OF ATOM
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Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Loss of electron from hydrogen atom results in nucleus of size.
Reason R: Proton always exists in combined form.
In the light of the above statements, choose the most appropriate answer from the options given below:
Assertion A: Loss of electron from hydrogen atom results in nucleus of size.
Reason R: Proton always exists in combined form.
In the light of the above statements, choose the most appropriate answer from the options given below:
View answer and explanation
Correct option: D
Both A and R are correct but R is NOT the
correct explanation of A
correct explanation of A
Option D (Both A and R are correct but R is NOT the correct explanation of A) is correct because both the assertion and the reason are true statements, but the reason does not explain the assertion.
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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?