In which of the following, NH₃ is not used?

(a)

Nessler’s reagent

(b)

Reagent for the analysis of IV group basic radical

(c)

Reagent for the analysis of III group basic radical

(d)

Tollen’s reagent

An element belongs to group 15 and 3^rd period of the periodic table, its electronic configuration would be_______.

(a)

1s² 2s² 2p⁴

(b)

1s² 2s² 2p³

(c)

1s² 2s² 2p⁶ 3s² 3p²

(d)

1s² 2s² 2p⁶ 3s² 3p³

P₄O₆ reacts with cold water to give _______.

(a)

H₃PO₃

(b)

H₄P₂O₇

(c)

HPO₃

(d)

H₃PO₄

The molarity of given orthophosphoric acid solution is 2M. Its normality is _______.

(a)

6N

(b)

4N

(c)

2N

(d)

none of these

Among the following, which is the strongest oxidizing agent?

(a)

Cl₂

(b)

F₂

(c)

Br₂

(d)

l₂

Which one of the following compounds is not formed?

(a)

XeOF₄

(b)

XeO₃

(c)

XeF₂

(d)

NeF₂

XeF₆ on complete hydrolysis produces________.

(a)

XeOF₄

(b)

XeO₂F₂

(c)

XeO₃

(d)

XeO₂

Which of the following is strongest acid among all?

(a)

HI

(b)

HF

(c)

HBr

(d)

HCl

Among the following the correct order of acidity is ________.

(a)

HClO₂ < HClO < HClO₃ < HClO₄

(b)

HClO₄ < HClO₂ < HClO < HClO₃

(c)

HClO₃ < HClO₄ < HClO₂ < HClO

(d)

HClO < HClO₂ < HClO₃ < HClO₄

Which of the following is correct?

(a)

H₃PO₃ is dibasic and reducing

(b)

H₃PO₃ is dibasic and non-reducing

(c)

H₃PO₄ is tribasic and reducing

(d)

H₃PO₃ is tribasic and non-reducing

Which of the following halides of group 15 is not hydrolysed?

(a)

NF₃

(b)

PF₃

(c)

NI₃

(d)

Both (a) and (b)

The hybridisation and shape of SF₆ is respectively?

(a)

sp³d², square planar

(b)

sp³d², octahedral

(c)

sp³d see-saw

(d)

sp³d, trigonal bipyramindal

S-S bond is present in _______.

(a)

H₂S₂O₇

(b)

H₂SO₅

(c)

H₂S₂O₆

(d)

H₂S₂O₆

Hot concentrated H₂SO₄ is miderately strong oxidising agent which of the following reactions does not show oxidising behaviour?

(a)

\(Cu+2H_{ 2 }{ SO }_{ 4 }\longrightarrow { CuSO }_{ 4 }+{ SO }_{ 2 }+{ 2H }_{ 2 }O\)

(b)

\(Cu+2H_{ 2 }{ SO }_{ 4 }\longrightarrow { CuSO }_{ 4 }+{ SO }_{ 2 }+{ 2H }_{ 2 }O\)

(c)

\(Cu+2H_{ 2 }{ SO }_{ 4 }\longrightarrow { CuSO }_{ 4 }+{ SO }_{ 2 }+{ 2H }_{ 2 }O\)

(d)

\({ CaF }_{ 2 }+{ H }_{ 2 }SO_{ 4 }\longrightarrow { CaCO }_{ 4 }+2HF\)

Least volatile hydrogen halide is ______.

(a)

HF

(b)

HCI

(c)

HBr

(d)

HI

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

(a)

F₂ > CI₂ > Br₂ > I₂: Bond dissociation energy

(b)

HI > HBr > HCI > HF: Acidic property in water

(c)

F₂ > Cl₂ > Br₂ > l₂: Oxidising power

(d)

F₂ > Cl₂ > Br₂ > l₂: Electronegativity

Orthophosphorus acid on heating gives______.

(a)

Hypophosphorus

(b)

Orthophosphoric acid

(c)

Phosphine gas

(d)

both (b) and (c)

The incorrect statement regarding structure of ozone is______.

(a)

Bond angle is less than 120°

(b)

It is linear

(c)

The two oxygen-oxygen bond length in ozone are identical

(d)

Both (b) and (c).

Which reaction is not feasible.

(a)

\({ 2H }_{ 2 }O+{ 2F }_{ 2 }\longrightarrow 4HF+{ O }_{ 2 }\)

(b)

\(2 \mathrm{KBr}+\mathrm{I}_{2} \longrightarrow 2 \mathrm{KI}+\mathrm{Br}_{2}\)

(c)

\(2KBr+{ Cl }_{ 2 }\longrightarrow 2KCl+{ Br }_{ 2 }\)

(d)

\(2 \mathrm{KI}+\mathrm{Br}_{2} \longrightarrow 2 \mathrm{KBr}+\mathrm{I}_{2}\)

The high reactivity of fluorine is due to________.

(a)

high ionisation energy

(b)

low bond dissociation energy

(c)

low electron affinity

(d)

high electro negativity