MCQs of p-Block Elements

Showing 141 to 150 out of 173 Questions

141.

Which of the following statements is not true ?

(a)	HF is a stronger acid than HCl
(b)	Among halide ions, iodide is the most powerful reducing agent
(c)	Fluorine is the only halogen that does not show a variable oxidation state
(d)	HOCl is a stronger acid than HOBr

142.

Which one of the following orders is not in accordance with the property stated against is ?

(a)	HI > HBr > HCl > HF : Acidic property in water
(b)	F₂ > Cl₂ > Br₂ > I₂ : Electronegativity
(c)	F₂ > Cl₂ > Br₂ > I₂ : Bond dissociation energy
(d)	F₂ > Cl₂ > Br₂ > I₂ : Oxidising power

143.

The correct order of increasing bond angles in the following species are :

144.

Tincture of iodine is

145.

A : The S-S-S bond angle in S₈ molecule is 105° R : S₈ has V-shape.

146.

The shape and hybridisation of some xenon oxyfluorides are given. Choose the wrong set.

(a)	XeOF₂ → T-shape-sp³d
(b)	XeOF₄ → Square pyramidal-sp³d²
(c)	XeO₂F₂ → Distorted triangal bipyramidal-sp³d
(d)	XeO₃F₂ → Octahedral-sp³d

147.

Iodine oxidises sodium borohydride to give

148.

The wrong statement about fullerene is

(a)	it has 5-memered carbon ring
(b)	it has 6-memered carbon ring
(c)	it has sp² hybridization
(d)	it has 5-membered rings more than 6-membered rings

149.

Which of the following reactions is not proper ?

150.

Select the correct order of acidic strength.

Showing 141 to 150 out of 173 Questions