MCQ
Correct option :
- A
- B
- ✓
- D$R$ to $S$ is carried out at $pH$ = $9.5$
✓
Answer
Correct option: C.
c
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Answer the following by appropriately matching the lists based on the information given in the paragraph Consider the Bohr's model of a one$-$electron atom where the electron moves around the nucleus. In the following List$-I$ contains some quantities for the $n^{t /}$ orbit of the atom and List$-II$ contains options showing how they depend on $n$. Which of the following options has the correct combination considering List$-I$ and List$-II$?
$(1)$ Which of the following options has the correct combination considering List$-I$ and List$-II$?
$(1) (II), (R) (2) (I), (P) (3) (I), (T) (4) (II), (Q)$
$(2)$ Which of the following options has the correct combination considering List$-I$ and List$-II$?
$(1) (III), (S) (2) (IV), (Q) (3) (IV),(U) (4) (III), (P)$
Give the answer or quetion $(1)$ and $(2)$
→| List$-I$ | List$-II$ |
| $(I)$ Radius of the $n^{\text {th }}$ orbit | $(P)$ $\propto n ^{-2}$ |
| $(II)$ Angular momentum of the electron in the $n^{\text {th }}$ orbit | $(Q)$ $\propto n ^{-1}$ |
| $(III)$ Kinetic energy of the electron in the $n^{\text {th }}$ orbit | $(R)$ $\propto n ^0$ |
| $(IV)$ Potential energy of the electron in the $n^{\text {th }}$ orbit | $(S)$ $\propto n ^1$ |
| $(T)$ $\propto n ^2$ | |
| $(U)$ $\propto n ^{1 / 2}$ |
$(1) (II), (R) (2) (I), (P) (3) (I), (T) (4) (II), (Q)$
$(2)$ Which of the following options has the correct combination considering List$-I$ and List$-II$?
$(1) (III), (S) (2) (IV), (Q) (3) (IV),(U) (4) (III), (P)$
Give the answer or quetion $(1)$ and $(2)$
The Lassiagne's extract is boiled with dil $\mathrm{HNO}_3$ before testing for halogens because,
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