MCQ
$A$ and $B$ is
- A
- ✓
- C
- DNone
✓
Answer
Correct option: B.
b
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
Product $Y$ is
→The molar enthalpies of combustion of $C_2H_2(g), C (graphite)$ and $H_2(g)$ are $-1300, -394,$ and $-286\, KJ \,mol^{-1}$, respectively. The standard enthalpy of formation of $C_2H_2(g)$ is .......$kJ \,mol^{-1}$
→Correct increasing order of number of $\sigma $ and $\pi $ bonds in following structures are
→$I.\,H_2S_2O_6\,\,\,\,\,\,\,\,II.\,H_2SO_3\,\,\,\,\,\,\,\,III.\,H_2SO_5$
Differential form of the rate equation is
→$\frac{{dx}}{{dt}} = k\left[ P \right]{\left[ Q \right]^{0.5}}{\left[ R \right]^{0.5}}$
Which statement about the above equation is wrong?
Which of the following is least reactive towards electrophilic substitution
${C_6}{H_6} + CO + HCl \xrightarrow{{{\text{Anhy }}AlC{l_3}}}X + HCl$ Compound $X$ is
→Which one of the following pairs is an example of polar molecular solids?
Which of the following has '$6$' unpaired $f-$electrons ?
→Match List-$I$ with List-$II$.
→|
List-$I$ (Molecule) |
List-$II$. (Number and types of bond/s between two carbon atoms) |
| $A$. ethane | $I$. one $\sigma$-bond and two $\pi$-bonds |
| $B$. ethene | $II$. two $\pi$-bonds |
| $C$. carbon molecule, $\mathrm{C}_2$ | $III$. one $\sigma$-bond |
| $D$. ethyne | $IV$. one $\sigma$-bond and one $\pi$-bond |
Choose the correct answer from the options given below:
The nucleus of an element contain $ 9 $ protons. Its valency would be
→