MCQ
The colour of liquid ${O_2}$ is
- ARed
- BDark blue
- CPale yellow
- ✓Pale blue
✓
Answer
Correct option: D.
Pale blue
d
(d)The colour of liquid ${O_2}$ is pale blue.
(d)The colour of liquid ${O_2}$ is pale blue.
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 product is formed when $1-$chlorobutane react with alcoholic $KOH$
→If ${E_f}$ and ${E_r}$ are the activation energies of forward and reverse reactions and the reaction is known to be exothermic, then
→The strength of an aqueous $NaOH$ solution is most accurately determined by titrating
→(Note : consider that an appropriate indicator is used)
Number of functional groups present in the following compound is
How many Faradays are required to generate one gram atom of magnesium from $MgC{l_2}$
→Molar heat of vaporisation of a liquid is $6\,kJ\,mo{l^{ - 1}}$. If the entropy change is $16\,J\,mo{l^{ - 1}}\,{K^{ - 1}}$, the boiling point of the liquid is
→For the electrochemical cell, $Mg ( s )\left| Mg ^{2+}( aq , 1 M ) \| Cu ^{2+}( aq , 1 M )\right| Cu ( s )$ the standard emf of the cell is $2.70 V$ at $300 K$. When the concentration of $Mg ^{2+}$ is changed to $x$, the cell potential changes to $2.67 V$ at $300 K$. The value of $x$ is.
→(given, $\frac{ F }{ R }=11500 K V ^{-1}$, where $F$ is the Faraday constant and $R$ is the gas constant, The value of $\ln (10)=2.30$ )
Decreasing order of basicity is
→(1) $C{H_3}CON{H_2}$
(2) $C{H_3}C{H_2}N{H_2}$
(3) $ Ph-C{H_2}CON{H_2}$
The order of the magnitude of first ionisation potentials of $Be, B, N$ and $O$ is
→The $IUPAC$ name for the following compound is:
→