MCQ
Empty space in $\text{ccp}$ lattice is:
- ✓$26\%$
- B$45\%$
- C$90\%$
- D$30\%$
✓
Answer
Correct option: A.
$26\%$
In $\text{ccp}$ lattice $74\%$ of the space is occupied by spheres and $26\%$ is empty.
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
Arrange the following in decreasing order of $BP$
→$CH_3CHO$ $( I )$, $CH_3CH_2OH$ $( II )$
$CH_3OCH_3$ $( III )$, $CH_3CH_2CH_3$ $( IV )$
When initial concentration of the reactant is doubled, the half-life period of a zero order reaction
${image}$
→Considering the above chemical reaction, identify the product $"X"$
The product obtained by dry distillation of calcium formate on reacting with ammonia yields
Cow milk, an example of natural emulsion is stabilised by:
$\begin{matrix}
{{H}_{2}}C=CH-C{{H}_{2}}-C{{H}_{2}}-CH-C{{H}_{3}}\xrightarrow[Pyridine]{SOC{{l}_{2}}} \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,| \,\,\,\,\,\,\,\, \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,OH\,\,\,\,\,\, \\
\end{matrix}$ $(A)\xrightarrow[({{H}_{2}}O)]{{{O}_{3}}/Zn}\underset{{{C}_{5}}{{H}_{9}}ClO}{\mathop{(B)}}\,\xrightarrow{NaB{{H}_{4}}}(C)$
→{{H}_{2}}C=CH-C{{H}_{2}}-C{{H}_{2}}-CH-C{{H}_{3}}\xrightarrow[Pyridine]{SOC{{l}_{2}}} \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,| \,\,\,\,\,\,\,\, \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,OH\,\,\,\,\,\, \\
\end{matrix}$ $(A)\xrightarrow[({{H}_{2}}O)]{{{O}_{3}}/Zn}\underset{{{C}_{5}}{{H}_{9}}ClO}{\mathop{(B)}}\,\xrightarrow{NaB{{H}_{4}}}(C)$
Compound $(C)$ is
The conversion of acetophenone into benzoic acid can be achieved by its reaction with
At higher altitude, boiling point of water is $95\,^oC$. The amount of $NaCl$ added to $1\, kg$ of water $(K_b = 0.52\, K\, mol^{-1}\,kg)$ in order to raise the boiling point of solution to $100\,^oC$ (assuming $90\%$ ionisation of $NaCl$) .......... $g$
→Which condition is not satisfied by an ideal solution?
For the gaseous reactions
→$A \to B$ ${k_1} = {10^{15}}{e^{ - 25000/8.34\,T}}$
$C \to D$ ${k_2} = {10^{14}}{e^{ - 15000/8.34\,T}}$
Calculate the approximate temperature at which $k_1 = k_2$ ...... $K$