MCQ
Which of the following has the highest melting point
- A$Pb$
- ✓Diamond
- C$Fe$
- D$Na$
✓
Answer
Correct option: B.
Diamond
(b)Diamond is the hardest substance it’s melting point would be highest.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The de-Broglie wavelength associated with a particle of mass ${10^{ - 6}}\,kg$ moving with a velocity of $10\,\,m{s^{ - 1}}$, is
→The five $P-F$ bond lengths in $PF_5$ are equal whereas the $P-Cl$ bond lengths in $PCl_5$ are not equal because
→Which of the following are arranged in the decreasing order of dipole moment?
An organic compound contains carbon, hydrogen and oxygen. Its elemental analysis gave $C, 38.71\%$ and $H, 9.67\%.$ The empirical formula of the compound would be
→An electron has magnetic quantum number as $-3.$ Its principal quantum number can be
→Choose the correct structure for $PF_3Cl_2$ molecule. (electron Affenity : $Cl > F)$
→The correct $IUPAC$ name for
→Standard enthalpy of vapourisation for $\mathrm{CCl}_4$ is $30.5 \mathrm{~kJ} \mathrm{~mol}^{-1}$. Heat required for vapourisation of $284 \mathrm{~g}$ of $\mathrm{CCl}_4$ at constant temperature is_______ $\mathrm{kJ}$. (Given molar mass in $\mathrm{g} \mathrm{mol}^{-1} ; \mathrm{C}=12, \mathrm{Cl}=35.5$ )
→Heating of alkanes with fuming sulphuric acid or oleum at high temperature, which forms sulphonic acid, is called
Oxidation number of $C$ in $HNC$ is
→