MCQ
Which allotrpic form of carbon does not have hexagonal rings in its structure
  • diamond
  • B
    graphite
  • C
    fullerene
  • D
    None of the above

Answer

Correct option: A.
diamond
a

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

Similar questions

The type of magnetism exhibited by ${\left[ {Mn{{\left( {{H_2}O} \right)}_6}} \right]^{2 + }}$ ion is
Rate of reaction is given by following rate law $ - \frac{{d\left[ c \right]}}{{dt}} = \frac{{{k_1}\,\left[ c \right]}}{{1 + {k_2}\,\left[ c \right]}}$ order of reaction when concentration is verh high
A current of $10.0\, A$ flows for $2 .00\, h$ through an electrolytic cell containing a molten salt of metal $X$. This results in the decomposition of $0 .250\, mol$ of metal $X$ at the cathode. The oxidation state of $X$ in the molten salt is $(F = 96,500\, C$)
Consider the figure provided.

$1 \mathrm{~mol}$ of an ideal gas is kept in a cylinder, fitted with a piston, at the position $\mathrm{A}$, at $18^{\circ} \mathrm{C}$. If the piston is moved to position $B$, keeping the temperature unchanged, then ' $x$ ' $L$ atm work is done in this reversible process.

$\mathrm{x}=$ . . . . . . $\mathrm{L} \mathrm{atm.} \mathrm{(nearest} \mathrm{integer)}$

[Given : Absolute temperature $={ }^{\circ} \mathrm{C}+273.15$, $\left.\mathrm{R}=0.08206 \mathrm{~L} \mathrm{~atm} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\right]$

For a reaction, $I^-+ OCl^-\to IO^-+ Cl^-$ is an aqueous medium, the rate of reaction is given by $\frac{{d[I{O^ - }]}}{{dt}} = K\frac{{[{I^ - }][OC{l^ - }]}}{{[O{H^ - }]}},$ The overall order of reaction is
The correct order of heat of hydrogenation of given molecules is
Following four solutions are prepared by mixing different volumes of $NaOH$ and $HCl$ of different concentrations, $pH$ of which one of them will be equal to $1$?
The most stable complex among the following is
$3\,g$ urea is dissolved in $45\,g$ of water. The relative lowering of vapour pressure is
The reaction,