MCQ
Oxidation state of elemental carbon is
- ✓$0$
- B$1$
- C$2$
- D$3$
✓
Answer
Correct option: A.
$0$
(a) Every element always shows zero oxidation state.
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
What is the entropy change (in $J\,{K^{ - 1}}\,mo{l^{ - 1}}$) when one mole of ice is converted into water at ${0\,^o}C$ (The enthalpy change for the conversion of ice to liquid water is $6.0\,\, kJ$ $mo{l^{ - 1}}$ at ${0\,^o}C$)
→Which of the following species is planar
How many number of compounds, which have same $IUPAC$ name ?
→The major product of the reaction is
Match List-$I$ with List-$II$
→| List -$I$ Molecule | List - $II$ Shape |
| $(A)$. $\mathrm{BrF}_5$ | $(I)$. $T$-shape |
| $(B)$. $\mathrm{H}_2 \mathrm{O}$ | $(II)$. See saw |
| $(C)$. $\mathrm{ClF}_3$ | $(III)$. Bent |
| $(D)$. $\mathrm{SF}_4$ | $(IV)$. Square pyramidal |
$Na^+$, $Mg^{2+}$, $Al^{3+}$, $Si^{4+}$ are isoelectronics. Their ionic size follows the order
→The energy barrier to free rotation about carbon carbon bond of ethane is about :
Cycloalkanes are isomeric with :
$600\,mL$ of $0.01\,M\,HCl$ is mixed with $400\,mL$ of $0.01\,M\,H _2 SO _4$. The $pH$ of the mixture is $.......\times 10^{-2}$. (Nearest integer) [Given $\log 2=0.30, \quad \log 3=0.48$ $\log 5=0.69 \quad \log 7=0.84$ $\log 11=1.04]$
→Total number of stereo-isomers possible for the following compound is
