Mock Test 1 — p-Block Elements (Class 11)

Element NOT in Group 13:

Inert pair effect is best exhibited by:

Diborane has:

The Lewis acid strength order:

Borax bead test identifies:

The strongest reducing agent in Group 14:

Allotrope of C with C60 molecule:

Silica reacts with:

Silicones contain repeating unit:

The most abundant metal in Earth's crust:

Number of bridging H atoms in $B_2H_6$:

Coordination number of Si in $SiO_4^{4-}$:

Oxidation state of C in CO₂:

Assertion (A): Tl shows +1 oxidation state more stable than +3. Reason (R): Inert pair effect makes 6s² electrons of Tl inert toward bonding.

Assertion (A): Boric acid is a Lewis acid. Reason (R): It accepts OH⁻ from water to form $[B(OH)_4]^-$, releasing H⁺.