JEE CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

1 Easy

1 of 1

Remembering +4 | -1

As percentage of carbon increase in iron, its hardness:

View answer and explanation

Correct option: B

Increases

Option B (Increases) is correct because increasing the carbon content in iron increases its hardness due to the formation of iron carbide (cementite), which is a hard and brittle phase.

More Questions from d & f- BLOCK ELEMENTS

Practice All Chapter MCQs →

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}

and

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

is called