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NEET UG CHEMISTRY MCQ: STRUCTURE OF ATOM
1
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Understanding
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Statement I: Electrons are negatively charged.
Statement II: The application of electric and magnetic field deflected the rays in the discharge tube towards the positive plate.
Statement II: The application of electric and magnetic field deflected the rays in the discharge tube towards the positive plate.
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Correct option: A
Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I.
Option A is correct. Electrons are negatively charged, and their deflection towards the positive plate in a discharge tube confirms this negative charge.
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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?