Explore topic-wise InterviewSolutions in Class 11.

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Class 11 knowledge and support exam preparation. Choose a topic below to get started.

1.

Which element is heaviest melting and boiling point metal ?

Answer» Correct Answer - Tungsten `(W)`<br>Tungsten `(W)`
2.

Name the lightest solid non-metal having the highest tensile strenght.

Answer» Correct Answer - `B`<br>Boron `(B)`
3.

Name of the heaviest naturally occurring element.A. `U`B. `Ra`C. `Pb`D. `Hg`

Answer» Correct Answer - A<br>`U(Z = 92, Aw = 238)` is the haviest element among the given elements.
4.

Name the most poisonous element.

Answer» Correct Answer - `Pu`<br>Plutonium `(Pu)`
5.

Which elements is heaviest melting point liquid metal ?

Answer» Correct Answer - `Hg`<br>Mercury `(Hg)`
6.

Which of the following statement is wrong?A. In the lanthanide series the electrons occupy `4f`-orbitals in preference to `5d` the and `6p`-orbitals.B. Zero group was not present in the periodic table when Mendeleev presented it.C. Law of octave was presented by Newland.D. Cuprous compounds are coloured while cupric compounds are colourless.

Answer» Correct Answer - D<br>(d) Statement (d) is wrong.<br> `Cu(Z = 29), 3rd^(10), 4s^(1)`<br> `Cu^(o+)` (cuprous) `= 3d^(10) 4s^(0)`<br> `Cu^(2+)` (cupric) `= 3d^(9) 4s^(0)` (one unpaired electron and hence is coloured).
7.

Name the best and the poorest conductor of current among metals.

Answer» Correct Answer - `Ag` and `Pb`<br>`Ag` and `pb`
8.

Name the heaviest solid metal.

Answer» Correct Answer - `Os`<br>Osmium `(Os)`