Download App

2. structure of atom — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry2. structure of atom1 Mark
MCQ
Assertion : Angular momentum of an electron in any orbit is given by angular momentum $ = \frac{{nh}}{{2\pi }}$, where $n$ is the principal quantum number.
Reason : The principal quantum number, $n$, can have any integral value.
  • A
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • ✓
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • C
    If the Assertion is correct but Reason is incorrect.
  • D
    If both the Assertion and Reason are incorrect.
✓

Answer

Correct option: B.
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
b
Both assertion and reason are correct. Reason is not the correct explanation of assertion.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 2. structure of atom→2. structure of atom — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The wavelength of a spectral line for an electronic transition is inversely related to
→
Potassium dichromate acts as a strong oxidizing agent in acidic solution. During this process, the oxidation state changes from
→
In case of $\ce{Na}$ metal if the number of $\ce{Na}$ atom increases, the difference in energy between successive $\ce{MOs}$ in $\ce{Na(Na)_n}$ molecules :
→
If $N$ and $S$ are present in an organic compound during Lassaigne test, then both changes into
→
Which of the following sets of quantum numbers is not allowed
→
The $pH$ value of decinormal solution of $N{H_4}OH$ which is $20\%$ ionised, is
→
The formula of methane is $ \mathrm{CH}_2 $ and its succeeding member ethane is expressed in $ \mathrm{C_2H_6}$​. The common difference of succession between them is:
→
Toluene on oxidation with dilute $HN{O_3}$ and alkaline $KMn{O_4}$ gives
→
Favourable conditions for electrovalency are
→
$B{\left( {OH} \right)_3} + NaOH \to NaB{O_2} + Na\left[ {B{{\left( {OH} \right)}_4}} \right] + {H_2}O$ 

How can this reaction is made to proceed in forward direction?

→