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Question

Match the followings
List-IList-II(I)Cathode rays(P)Helium nuclei(II)Alpha particles(Q)Uncertainty principle(III)J.J. Thomson(R)Electromagnetic radiation(IV)X-rays(S)Plum Pudding Model(T)Atomic number(U)Electrons

A
IP; IIR; IIIT; IVS
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B
IQ; IIT; IIIU; IVR
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C
IT; IIP; IIIR; IVQ
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D
IU; IIP; IIIS; IVR
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Solution

The correct option is D IU; IIP; IIIS; IVR
I- Cathode rays are made up of electrons.
II- Alpha particles are made up of helium nuclei.
III- J.J. Thomson suggested that electrons are surrounded by a volume of positive charge. It looks like negatively charged "plums" embedded in a positively charged "pudding". So it is called as Plum Pudding model.
IV- X rays are part of electromagnetic radiation.

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