Question

Match the followings
$\begin{array}{cccc}& \text{List-I}& & \text{List-II}\\ \left(I\right)& \text{Cathode rays}& \left(P\right)& \text{Helium nuclei}\\ \left(II\right)& \text{Alpha particles}& \left(Q\right)& \text{Uncertainty principle}\\ \left(III\right)& \text{J.J. Thomson}& \left(R\right)& \text{Electromagnetic radiation}\\ \left(IV\right)& \text{X-rays}& \left(S\right)& \text{Plum Pudding Model}\\ & & \left(T\right)& \text{Atomic number}\\ & & \left(U\right)& \text{Electrons}\end{array}$

• A. $I-P;II-R;III-T;IV-S$
• B. $I-Q;II-T;III-U;IV-R$
• C. $I-T;II-P;III-R;IV-Q$
• D. $I-U;II-P;III-S;IV-R$

Answer 1

The correct option is D $I-U;II-P;III-S;IV-R$

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.