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JEE CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

1 Medium

1 of 1

Application +4 | -1

In the chemical reaction,

{K}_2 {Cr}_2 {O}_7+{XH}_2 {SO}_4+{YSO}_2 \rightarrow {K}_2 {SO}_4+{Cr}_2\left({SO}_4\right)_3+{ZH}_2 {O}\,\,\, {X}, {Y}

and

{Z}

are

View answer and explanation

Correct option: A

1,3,1

Option A (1,3,1) is correct because it correctly balances the given chemical reaction, ensuring the conservation of mass and charge.

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Mercury is transported in metal containers made of: Cadmipone is a mixture of: The number of element from the following that do not belong to lanthanoids is :
Eu, Cm, Er, Tb, Yb and Lu Statement-I:

{Sm}^{3+}

{Dy}^{3+}

have same colour (yellow).

Statement-II: Both ions are having same number of unpaired electrons. The most common oxidation state of Lanthanoid
elements is +3. Which of the following is likely to
also form other oxidation state? A mixture of

\mathrm{Ti}{\mathrm{O}_2}

\mathrm{BaS}{\mathrm{O}_4}