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
$'O-N-O'$ bond angle is maximum in ?
→Colour of acidified $K _2Cr_2O_7$ is not changed by
→Wavelength of red light is absorbed by the complex
Which of the following is an amphoteric acid
During titration of acetic acid with aq. $NaOH$ solution, the neutralisation graph has a vertical line. This line indicates
→What is correct about product ?
The number of unpaired electrons in the $p$ - subshell of oxygen atom is
→If ${E_f}$ and ${E_r}$ are the activation energies of forward and reverse reactions and the reaction is known to be exothermic, then
→Gadolinium belongs to $4f$ series. Its atomic number is $64.$ Which of the following is the correct electronic configuration of gadolinium?
→The metal-having highest melting point is