What are the products obtained when ammonia is reacted with excess chlorine?

• N₂ and NCl₃

• N₂ and HCl

• N₂ and NH₄Cl

• NCl₃ and HCl

Which one ofthe following orderis correct for the bond energies of halogen molecules?

• I₂ > Cl₂ > Br₂

• Br₂ > Cl₂ > I₂

• I₂ > Br₂ > Cl₂

• Cl₂ > Br₂ > I₂

Which one of the following halogens liberates oxygen, when passed through hot concentrated KOH solution ?

• I₂

• Cl₂

• Br₂

• F₂

Order of reactivity of halogen acids towards an alcohol is

• HCl > HBr > HI

• HBr > HI > HCl

• HI > HBr > HCl

• HI > HCl > HBr

What are the products formed when ammonia reacts with excess chlorine?

• N₂ and NCl₃

• NCl₃ and HCl

• N₂ and NH₄Cl

• N₂ and HCl

Compound X is anhydride of sulphuric acid. The number of σ-bonds and the number of π-bonds presentin X are, respectively :

• 3,3

• 4,2

• 2,4

• 4,3

127.

Which one of the following is a correct pair with respect to molecular formula of xenon compound and hybridization state of xenon in it?

• XeF₄, sp³

• XeF₂, sp

• XeF₂, sp³d

• XeF₄, sp²

The oxidation state of Xe in XeO₃ and the bond angle in it respectively are:

• +6, 109°

• +8, 103°

• +6, 103°

• +8, 120°

Fluorosis disease is caused due to the reaction of with excess of fluoride in the body.

• Ca

• Mg

• Fe

• K

Two oxides of nitrogen, NO and NO₂ react together at 253K and form a compound of nitrogen X. X reacts with water to yield another compound of nitrogen Y. The shape of the anion of Y molecule is :

• tetrahedral

• triangular planar

• square planar

• pyramidal