MCQ
Which of the following material is not a semiconductor.
- AGermanium
- ✓Graphite
- CSilicon
- DCopper oxide
✓
Answer
Correct option: B.
Graphite
b
Graphite is conductor
Graphite is conductor
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
Hydrolysis of sucrose is glven by the following reactlon.
→Sucrose $+$ $H _{2} O \rightleftharpoons$ Glucose $+$ Fructose
If the equilibrium constant $\left( K _{c}\right)$ is $2 \times 10^{13}$ at $300\, K$, the value of $\Delta_{ r } G^{\Theta}$ at the same temperature will be:
Which sequence of steps describes the best synthesis of $2-$ phenylpropene ?
→The silicate anion in the mineral kinoite is a chain of three $SiO_4$ tetrahedra, that share corners with adjacent tetrahedra. The change of the silicate anion is
→A solution of methyl amine
(image) $\xrightarrow[\Delta ]{{{P_2}{O_5}}}A,$ product $A$ is
→Pure water boils at $-99.725^{\circ} C$ at Shimla. If $K _{ b }$ for water is $0.51 K mol ^{-1} kg$, the boiling point of 0.69 molal urea solution will be:
→Which of following orders is correct for heat of hydrogenation of these compounds ?
All the energy released from the reaction $X \rightarrow Y \cdot \Delta_{ T } G ^0=-193 \ kJ \ mol ^{-1}$ is used for oxidizing $M ^{+}$as $M ^{+} \rightarrow M ^{3+}+2 e ^{-}, E ^0=-0.25 \ V$.
→Under standard conditions, the number of moles of $M ^{+}$oxidized when one mole of $X$ is converted to $Y$ is $\left[ F =96500 \ C \ mol ^{-1}\right]$
In which of the following solvents will $AgBr$ have the highest solubility
→Highest stable $Mn$ fluoride is $MnF_4$ where as highest $Mn$ oxide is $Mn_2O_7$ due to
→