MCQ
Which of the following compound expected to be colourless
- A$ScO$
- B${V_2}{O_3}$
- ✓$CuCN$
- D$C{r_2}{(S{O_4})_3}$
✓
Answer
Correct option: C.
$CuCN$
c
(c)
as all the electrons are paired. It is expected to be colourless.
(c)
as all the electrons are paired. It is expected to be colourless.
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
Cyclohexane, a hydrocarbon floats on water because
Product $(A)$ is
→Consider the following reaction The product '$X$' is used
→Potassium chlorate is prepared by the electrolysis of $KCl$ in basic solution
→$6 OH ^{-}+ Cl ^{-} \rightarrow ClO _{3}^{-}+3 H _{2} O +6 e ^{-}$
If only $60 \%$ of the current is utilized in the reaction, the time (rounded to the nearest hour) required to produce $10\, g$ of $KCIO _{3}$ using a current of $2\, A$ is..........
(Given : $F =96,500\, C\, mol ^{-1}$ molar mass of $\left. KClO _{3}=122\,gmol ^{-1}\right)$
Which of the following pair has elements containing same number of electrons in the outermost orbit
The oxidation number of $Mn$ in $MnO_4^{ - 1}$ is
→The equilibrium constant for the reaction
→$\mathrm{SO}_3(\mathrm{~g}) \rightleftharpoons \mathrm{SO}_2(\mathrm{~g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g})$
is $\mathrm{K}_{\mathrm{C}}=4.9 \times 10^{-2}$. The value of $\mathrm{K}_{\mathrm{C}}$ for the reaction given below is
$2 \mathrm{SO}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{SO}_3(\mathrm{~g})$ is
In which of the following pair, both the species are isoelectronic but the first one is large in size than the second?
What is the $pH$ of a $1\,M$ $C{H_3}COOH$ a solution ${K_a}$ of acetic acid $ = 1.8 \times {10^{ - 5}}.$ $K = {10^{ - 14}}\,mo{l^2}litr{e^{ - 2}}$
→Which of the following species can function both as oxidizing as well as reducing agent ?