Titanox

Lithopone

White pigment

None of these

$Mn > Cr > Ti > V$

$Ti > V > Cr > Mn$

$Cr > Mn > V > Ti$

$V.Mn > Cr > Ti$

Yttrium

Chromium

Zinc

Scandium

A prime number is only divisible by 1 and itself.

All prime numbers are odd

If a number is divisible by 2 and 3, it is divisible by 6.

1 is not a prime number

$La{\left( {OH} \right)_3}$

$Eu{\left( {OH} \right)_3}$

$Er{\left( {OH} \right)_3}$

$Lu{\left( {OH} \right)_3}$

${\rm{C}}{{\rm{r}}_2}{{\rm{O}}_3}$

${\rm{Cr}}{{\rm{O}}_2}{\rm{C}}{{\rm{l}}_2}$

${\rm{CrC}}{{\rm{l}}_3}$

${{\rm{K}}_2}{\rm{S}}{{\rm{O}}_4}.{\rm{C}}{{\rm{r}}_2}{\left( {{\rm{S}}{{\rm{O}}_4}} \right)_3}.24{{\rm{H}}_2}{\rm{O}}$

Loss of electrons by Fe

Gain of electrons by Fe

Neither gain nor loss of electrons

Hydration of Fe

0

$1.87$

$5.92$

2

Carbonates soluble in dilute ${\rm{HN}}{{\rm{O}}_3}$

Nitrates

Insoluble chlorides

Same type of coloured compounds

$1.5\%$

$2.5\%$

$10\%$

Zero percent

$+ 3, + 2$

$+ 3, + 6$

$+ 2, + 6$

$+ 2, + 3$