Chapters
Chapter 2: p-Block Elements - I
Chapter 3: p-Block Elements - II
Chapter 4: Transition and Inner Transition Elements
Chapter 5: Coordination Chemistry
Chapter 6: Solid State
Chapter 7: Chemical Kinetics
Chapter 8: Ionic Equilibrium
Chapter 9: Electro Chemistry
Chapter 10: Surface Chemistry
Chapter 11: Hydroxy Compounds and Ethers
Chapter 12: Carbonyl Compounds and Carboxylic Acids
Chapter 13: Organic Nitrogen Compounds
Chapter 14: Biomolecules
Chapter 15: Chemistry in Everyday Life
Chapter 3: p-Block Elements - II
Tamil Nadu Board Samacheer Kalvi solutions for Class 12th Chemistry Volume 1 and 2 Answers Guide Chapter 3 p-Block Elements - II Evaluation [Pages 96 - 99]
Choose the best answer:
In which of the following, NH3 is not used?
Nessler’s reagent
Reagent for the analysis of IV group basic radical
Reagent for the analysis of III group basic radical
Tollen’s reagent
Which is true regarding nitrogen?
least electronegative element
has low ionisation enthalpy than oxygen
d-orbitals available
ability to form pπ − pπ bonds with itself
An element belongs to group 15 and 3rd period of the periodic table, its electronic configuration would be
1s2 2s2 2p4
1s2 2s2 2p3
1s2 2s2 2p6 3s2 3p2
1s2 2s2 2p6 3s2 3p3
Solid (A) reacts with strong aqueous NaOH liberating a foul smelling gas (B) which spontaneously burn in air giving smoky rings. A and B are respectively
P4 (red) and PH3
P4 (white) and PH3
S8 and H2S
P4 (white) and H2S
On hydrolysis, PCl3 gives ____________.
H3PO3
PH3
H3PO4
POCl3
P4O6 reacts with cold water to give ____________.
H3PO3
H4P2O7
HPO3
H3PO4
The basicity of pyrophosphorous acid (H4P2O5) is ____________.
4
2
3
5
The molarity of given orthophosphoric acid solution is 2M. its normality is ____________.
6N
4N
2N
none of these
Assertion: bond dissociation energy of fluorine is greater than chlorine gas
Reason: chlorine has more electronic repulsion than fluorine
Both assertion and reason are true and reason is the correct explanation of assertion.
Both assertion and reason are true but reason is not the correct explanation of assertion.
Assertion is true but reason is false.
Both assertion and reason are false.
Among the following, which is the strongest oxidizing agent?
Cl2
F2
Br2
l2
The correct order of the thermal stability of hydrogen halide is ____________.
HI > HBr > HCl > HF
HF > HCl > HBr > HI
HCl > HF > HBr > HI
HI > HCl > HF > HBr
Which one of the following compounds is not formed?
XeOF4
XeO3
XeF2
NeF2
Most easily liquefiable gas is ____________.
Ar
Ne
He
Kr
XeF6 on complete hydrolysis produces ____________.
XeOF4
XeO2F2
XeO3
XeO2
Which of the following is the strongest acid among all?
HI
HF
HBr
HCl
Which one of the following orders is correct for the bond dissociation enthalpy of halogen molecules?
Br2 > I2 > F2 > Cl2
F2 > Cl2 > Br2 > l2
I2 > Br2 > Cl2 > F2
Cl2 > Br2 > F2 > I2
Among the following the correct order of acidity is
HClO2 < HClO < HClO3 < HClO4
HClO4 < HClO2 < HClO < HClO3
HClO3 < HClO4 < HClO2 < HClO
HClO < HClO2 < HClO3 < HClO4
When copper is heated with conc HNO3 it produces ____________.
Cu(NO3)2, NO and NO2
Cu(NO3)2 and N2O
Cu(NO3)2 and NO2
Cu(NO3)2 and NO
Answer the following questions:
What is the inert pair effect?
Chalcogens belongs to p-block. Give reason.
Explain why fluorine always exhibit an oxidation state of −1?
Give the oxidation state of halogen in the following.
OF2
Give the oxidation state of halogen in the following.
O2F2
Give the oxidation state of halogen in the following.
Cl2O3
Give the oxidation state of halogen in the following.
I2O4
What are interhalogen compounds? Give examples.
Why fluorine is more reactive than other halogens?
Give the uses of helium.
What is the hybridisation of iodine in IF7? Give its structure.
Give the balanced equation for the reaction between chlorine with cold NaOH and hot NaOH.
How will you prepare chlorine in the laboratory?
Give the uses of sulphuric acid.
Give a reason to support that sulphuric acid is a dehydrating agent.
Write the reason for the anomalous behaviour of Nitrogen.
Write the molecular formula and structural formula for the following molecule.
Nitric acid
Write the molecular formula and structural formula for the following molecule.
Dinitrogen pentoxide
Write the molecular formula and structural formula for the following molecule.
Phosphoric acid
Write the molecular formula and structural formula for the following molecule.
Phosphine
Give the uses of argon.
Write the valence shell electronic configuration of group-15 elements.
Give two equations to illustrate the chemical behaviour of phosphine.
Give a reaction between nitric acid and a basic oxide.
What happens when PCl5 is heated?
Suggest a reason why HF is a weak acid, whereas binary acids of all other halogens are strong acids.
Deduce the oxidation number of oxygen in hypofluorous acid – HOF.
What type of hybridisation occur in BrF5
What type of hybridisation occur in BrF3
Complete the following reaction.
\[\ce{NaCl + MnO2 + H2SO4 ->}\]
Complete the following reaction.
\[\ce{NaNO2 + HCl ->}\]
Complete the following reaction.
\[\ce{P4 + NaOH + H2O ->}\]
Complete the following reaction.
\[\ce{AgNO3 + PH3 ->}\]
Complete the following reaction.
\[\ce{Mg + HNO3 ->}\]
Complete the following reaction.
\[\ce{KClO3 ->[\Delta]}\]
Complete the following reaction.
\[\ce{Cu + \underset{\text{(Hot conc)}}{H2SO4} ->}\]
Complete the following reaction.
\[\ce{Sb + Cl2 ->}\]
Complete the following reaction.
\[\ce{HBr + H2SO4 ->}\]
Complete the following reaction.
\[\ce{XeF6 + H2O ->}\]
Complete the following reaction.
\[\ce{XeO^4-_6 + Mn^2+ + H^+ ->}\]
Complete the following reaction.
\[\ce{XeOF4 + SiO2 ->}\]
Complete the following reaction.
\[\ce{Xe + F2 ->[Ni/200 atm][400°C]}\]
Chapter 3: p-Block Elements - II
Tamil Nadu Board Samacheer Kalvi solutions for Class 12th Chemistry Volume 1 and 2 Answers Guide chapter 3 - p-Block Elements - II
Tamil Nadu Board Samacheer Kalvi solutions for Class 12th Chemistry Volume 1 and 2 Answers Guide chapter 3 (p-Block Elements - II) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Tamil Nadu Board of Secondary Education Class 12th Chemistry Volume 1 and 2 Answers Guide solutions in a manner that help students grasp basic concepts better and faster.
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Concepts covered in Class 12th Chemistry Volume 1 and 2 Answers Guide chapter 3 p-Block Elements - II are Group 15 (Nitrogen Group) Elements, Group 16 (Oxygen Group) Elements, Oxygen, Group 17 (Halogen Group) Elements, Group 18 (Inert Gases) Elements.
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