MCQ
$\pi-$ bonding is not present in
- ✓Grignard reagent
- BDibenzene chromium
- CZeise’s salt
- DFerrocene
✓
Answer
Correct option: A.
Grignard reagent
a
(a)Grignard reagent is, $R - Mg - X$.
(a)Grignard reagent is, $R - Mg - X$.
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
Assertion : The radius of the first orbit of hydrogen atom is $0.529\,\mathop A\limits^o$
Reason : Radius of each circular orbit $(r_n) - 0.529\,\mathop A\limits^o \,(n^2/Z),$ where $n = 1, 2, 3$ and $Z =$ atomic number.
→Reason : Radius of each circular orbit $(r_n) - 0.529\,\mathop A\limits^o \,(n^2/Z),$ where $n = 1, 2, 3$ and $Z =$ atomic number.
Which of the following product will be obtained in the given (consider minor product also) Beckman $n-$ type rearrangement ?
→Which of the following interaction lies in the range of $8 - 42\, kJ/mol$ ?
→The $IUPAC$ name of the complex -
→$\left[ Ag \left( H _{2} O \right)_{2}\right]\left[ Ag ( CN )_{2}\right]$ is :
If $1$ molal solution of benzoic acid in benzene has a freezing point depression of $2.56\,^oC$.
$(K_f = 5.12\,^oC\,mol^{-1}\, kg)$ and boiling point elevation of $2.53\,^oC$ $(K_b = 2.53\,^oC\,mol^{-1}\,kg)$, then select the correct statement/s :
Statement $I :$ there is dimer formation when undergoing freezing.
→$(K_f = 5.12\,^oC\,mol^{-1}\, kg)$ and boiling point elevation of $2.53\,^oC$ $(K_b = 2.53\,^oC\,mol^{-1}\,kg)$, then select the correct statement/s :
Statement $I :$ there is dimer formation when undergoing freezing.
Statement $II :$ there is no change when undergoing boiling
Statement $III :$ reverse of $I$ and $II$
Statement $IV :$ dimer formation in freezing and boiling state
The results given in the below table were obtained during kinetic studies of the following reaction:
→$2 A + B \longrightarrow C + D$
| Experiment | $[ A ] / molL ^{-1}$ | $[ B ] / molL ^{-1}$ | Initial $rate/molL$ $^{-1}$ $\min ^{-1}$ |
| $I$ | $0.1$ | $0.1$ | $6.00 \times 10^{-3}$ |
| $II$ | $0.1$ | $0.2$ | $2.40 \times 10^{-2}$ |
| $III$ | $0.2$ | $0.1$ | $1.20 \times 10^{-2}$ |
| $IV$ | $X$ | $0.2$ | $7.20 \times 10^{-2}$ |
| $V$ | $0.3$ | $Y$ | $2.88 \times 10^{-1}$ |
$X$ and $Y$ in the given table are respectively :
The Van't Hoff factor for sodium phosphate would be
Dissociation constant for a monobasic acid is $10^{-4}$ . What is the $pH$ of the monobasic acid ? (If $\%$ dissociation $= 2\,\%$ )
→Which of the following is prepared by electrolytic method
A pink colored salt on dry heating becomes blue in colour. Salt may contain