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Complete and balance the following equations:
S+H2SO4(conc.) →
Concept: Group 16 Elements - The Oxygen Family >> Sulphuric Acid
Complete and balance the following equation:
\[\ce{PCl3 + H2O ->}\]
Concept: Group 15 Elements - The Nitrogen Family >> Phosphorus Halides
Write balanced chemical equations involved in the following reactions:
Chlorine gas reacts with cold and dilute NaOH
Concept: Compounds of Halogens
Write balanced chemical equations involved in the following reactions:
Calcium phosphide is dissolved in water.
Concept: Group 15 Elements - The Nitrogen Family >> Oxoacids of Phosphorus
Draw structures of the following:
XeF4
Concept: Group 18 Elements - The Noble gas Family
Draw structures of the following:
`S_2O_8^{2-}`
Concept: Group 16 Elements - The Oxygen Family >> Oxoacids of Sulphur
Give reactions for the following:
O – O single bond is weaker than S – S single bond.
Concept: Group 16 Elements - The Oxygen Family
Tendency to show –3 oxidation state decrease from Nitrogn (N) to Bismuth (Bi).
Concept: Group 15 Elements - The Nitrogen Family >> Oxides of Nitrogen
Cl2 acts as a bleaching agent.
Concept: Group 17 Elements - The Halogen Family
Write one difference between transition elements and p-block elements with reference to variability of oxidation states.
Concept: Group 16 Elements - The Oxygen Family >> Oxoacids of Sulphur
Why phenol undergoes electrophilic substitution more easily than benzene?
Concept: Chemical Reaction of Ethers - Electrophilic Substitution
Give a reason for the following :
Ozone is thermodynamically less stable than oxygen.
Concept: Group 16 Elements - The Oxygen Family >> Ozone
Write the structure of main compounds A and B in the following reaction:
\[\ce{CH3CH2CN->[CH3MgBRH/3O+]A->[LiAIH4]B}\]
Concept: Methods of Preparation of Alcohols
Why phenol undergoes electrophilic substitution more easily than benzene?
Concept: Methods of Preparation of Phenols
Account for the following:
o-nitrophenol is more steam volatile than p-nitrophenol.
Concept: Chemical Reactions of Alcohols and Phenols >> Reactions Involving Cleavage of O-H Bond
Give simple chemical test to distinguish between Ethanol and Phenol.
Concept: Commercially Importance Alcohols
Give reasons for the following:
Sulphur in vapour state shows paramagnetic behaviour.
Concept: Group 16 Elements - The Oxygen Family >> Sulphur - Allotropic Forms
Give reasons for the following:
Ozone is thermodynamically less stable than oxygen.
Concept: Group 16 Elements - The Oxygen Family >> Ozone
Write the name of gas released when Cu is added to
dilute HNO3
Concept: Group 15 Elements - The Nitrogen Family >> Nitric Acid
Write the name of gas released when Cu is added to
conc. HNO3
Concept: Group 15 Elements - The Nitrogen Family >> Nitric Acid
