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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which element is heaviest melting and boiling point metal ? |
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Answer» Correct Answer - Tungsten `(W)` Tungsten `(W)` |
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| 2. |
Name the lightest solid non-metal having the highest tensile strenght. |
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Answer» Correct Answer - `B` Boron `(B)` |
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| 3. |
Name of the heaviest naturally occurring element.A. `U`B. `Ra`C. `Pb`D. `Hg` |
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Answer» Correct Answer - A `U(Z = 92, Aw = 238)` is the haviest element among the given elements. |
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| 4. |
Name the most poisonous element. |
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Answer» Correct Answer - `Pu` Plutonium `(Pu)` |
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| 5. |
Which elements is heaviest melting point liquid metal ? |
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Answer» Correct Answer - `Hg` Mercury `(Hg)` |
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| 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. |
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Answer» Correct Answer - D (d) Statement (d) is wrong. `Cu(Z = 29), 3rd^(10), 4s^(1)` `Cu^(o+)` (cuprous) `= 3d^(10) 4s^(0)` `Cu^(2+)` (cupric) `= 3d^(9) 4s^(0)` (one unpaired electron and hence is coloured). |
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| 7. |
Name the best and the poorest conductor of current among metals. |
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Answer» Correct Answer - `Ag` and `Pb` `Ag` and `pb` |
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| 8. |
Name the heaviest solid metal. |
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Answer» Correct Answer - `Os` Osmium `(Os)` |
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