12th Chemistry Monthly Test - 1( p-Block Elements-II)

St. Britto Hr. Sec. School - Madurai

12th Chemistry Monthly Test - 1( p-Block Elements-II)-Aug 2020

Time : 2.30 Hours

Part - A

Multiple Choice Question - Answer All Question

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

The basicity of pyrophosphorous acid ( H₄P₂O₅) is

Which reaction is not feasible__________

\({ 2H }_{ 2 }O+{ 2F }_{ 2 }\longrightarrow 4HF+{ O }_{ 2 }\)
\({ 2H }_{ 2 }O+{ 2F }_{ 2 }\longrightarrow 4HF+{ O }_{ 2 }\)
\(2KBr+{ Cl }_{ 2 }\longrightarrow 2KCl+{ Br }_{ 2 }\)
\(2KBr+{ Cl }_{ 2 }\longrightarrow 2KCl+{ Br }_{ 2 }\)

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

NF₃
PF₃
NI₃
Both (a) and (b)

Thr hybridisation and shape of SF₆ is respectively?

sp³d²,square planar
sp³d²,octahedral
sp³d see-saw
sp3d,trigonal bipyramindal

Strong reducing behaviour of H₃PO₂ is due to______

High oxidation state of phosphorus
High electro gain enthalpy of phosphorus
Presence of two-OH groups and one P-H bond
Presence of one-OH groups and two P-H bonds

When Copper is heated with cone HNO₃ it produces

Cu (NO₃)₂ and N₂0
Cu (NO₃)₂ and NO₂
Cu (NO₃)₂ and NO
Cu (NO₃)₂ NO and N₂O

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

Most easily liquefiable gas is

Which is dibasic?

Orthophosphoric acid
Pyrophosphoric acid
Orthophosphorus acid
Hypophosphorus acid

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
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

Among the following, which is the strongest oxidizing agent?

Cl₂
F₂
Br₂
l₂

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

Repeated use of which one of the following fertilizers would increase the activity of the soil_______

Ammonium sulphate
Superphosphate of lime
Urea
Potassium nitrate

Pick the wrong one among the following

F₂ - Yellow
Br₂ - Red
Cl₂ - Colourless
I₂- Violet

Part - B

Generic 2 - Answer All Question

Give two uses of nitric acid
Elements of group 16 show lower value of first ionization enthalpy compared to group 15, why?

How is ammonia prepared in the lab?

(i) Nitric oxide becomes brown when released in air.why?
(ii) BiCl₃ is more stable than BiCl₃, Why?

How is SO₂ an air pollutant?

Although \(\triangle\)H of fluorine is less negative than that of chlorine, but fluorine is a stronger oxidising agent than chlorine, why?

Chalcogens belongs to p-block. Give reason.

Account for the following:
(i) O-O bond lengths in ozone molecule are identical.
(ii) Most of the reactions in fluorine are exothermic.

How would you account for the following? The electron gain enthalpy with negative sign is less for oxygen than that of sulphur.

Give the reason for bleaching action of Cl₂.

There is a huge difference between the melting and boiling points of oxygen and sulphur. Why?

Acidic character increases from HF to HI. I State whether the above statement is True or false and give reason for your answer.

(i) Give correct order of boiling point of hydride of group 17.
(ii) Fluorine exhibits only -1 oxidation state whereas other halogens show +1, +3, +5 and +7 oxidation state also Explain.
Why fluorine is more reactive than other halogens?

Give reason for the following:
F₂ is more reactive than CIF₃ but CIF₃ is more reactive than Cl₂

Give two uses of nitrogen

Give the uses of helium.

Part - C

Generic 3 - Answer All Question

Out of H₂O and H₂S which one has higher bond angle and why?
Explain the structure of ammonia

Complete the following reactions
(l) Cl₂+ H₂0\(\longrightarrow \)?
(ii) XeF₆ + 2H₂0 \(\longrightarrow \) ?
(Iii) XeF₆ + 2H₂0\(\longrightarrow \)?

Explain the commercial method of preparation of nitric acid. (or) How nitric acid is prepared by Ostwald's process

Give a reason to support that sulphuric acid is a dehydrating agent.

An element A occupies group number 17and period number 2) is the most electronegative element. Element A reacts with another element B) which occupies group number 17 and period number 4) to give a compound Compound C undergoes sp³d² hybridsation and has octahedral structur. Identify the elements a and B and the compound C.Write the reactions.

Explain the characteristic properties of hydrogen halides.

Give the balanced equation for the reaction between chlorine with cold NaOh and hot NaOH.

Why CIF ₃ exists but FCl₃ does not exist - Give reason.

CIF₃ molecule has aT-shaped structure and not a trigonal planar one. Why?

What is Haber's process? (or) How is ammonia synthesized by Haber's process?
Name a reaction for the estimation of Ozone.

Part - D

Generic 5 - Answer All Question

Suggest a reason why HF is a weak acid, whereas binary acids of the all other halogens are strong acids.

Complete the following reactions.
1. NaCl + MnO₂ + H₂SO₄ ⟶
2. NaNO₂ + HCl ⟶
3. IO₃-+ I^- + H⁺ ⟶
4. I₂ + S₂O₃^2- ⟶
5. P₄ + NaOH + H₂O ⟶
6. AgNO₃ + PH₃ ⟶
7. Mg + HNO₃ ⟶
8. KCIO₃ \(\overset { a }{ \longrightarrow } \)
9. \(\quad Cu+\overset { Hotconc }{ { H }_{ 2 }SO_{ 4 } } \) ⟶
10. Sb + Cl₂ ⟶
11. HBr + H₂SO₄ ⟶
12. XeF₆ + H₂O ⟶
13. XeO₆^4- + Mn²⁺ + H⁺ ⟶
14. XeOF₄ + SiO₂ ⟶
15. \(Xe+{ F }_{ 2 }\overset { Ni/200atm }{ \underset { 400^{ 0 }C }{ \longrightarrow } } \).

Write the valence shell electronic configuration of group-15 elements.

Account for the following:
(i) Reducing character decreases from SO₂ to TeO₂.
(ii) Xenon forms compounds with fluorine and oxygen only.
What happens when PCl₅ is heated?

What type of hybridisation occur in
a) BrF₅
b) BrF₃

Comment

Add Comment

InstaQB

Institutions

12th Standard English Medium

12th Standard Tamil Medium

11th Standard English Medium

11th Standard Tamil Medium

10th Standard English Medium

9th Standard English Medium

8th Standard English Medium

7th Standard English Medium

Class XII

Class XI

12Th Standard

11Th Standard

10Th Standard

9Th Standard

12th Chemistry Monthly Test - 1( p-Block Elements-II)

St. Britto Hr. Sec. School - Madurai

12th Chemistry Monthly Test - 1( p-Block Elements-II)-Aug 2020

Part - A

Multiple Choice Question - Answer All Question

Among the following the correct order of acidity is

The basicity of pyrophosphorous acid ( H4P2O5) is

Which reaction is not feasible__________

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

Thr hybridisation and shape of SF6 is respectively?

Strong reducing behaviour of H3PO2 is due to______

When Copper is heated with cone HNO3 it produces

In which of the following , NH3 is not used?

Most easily liquefiable gas is

Which is dibasic?

Assertion : bond dissociation energy of fluorine is greater than chlorine gas Reason: chlorine has more electronic repulsion than fluorine.

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

Among the following, which is the strongest oxidizing agent?

Which is true regarding nitrogen?

Repeated use of which one of the following fertilizers would increase the activity of the soil_______

Pick the wrong one among the following

Part - B

Generic 2 - Answer All Question

Give two uses of nitric acid

Elements of group 16 show lower value of first ionization enthalpy compared to group 15, why?

How is ammonia prepared in the lab?

(i) Nitric oxide becomes brown when released in air.why? (ii) BiCl3 is more stable than BiCl3, Why?

How is SO2 an air pollutant?

Although \(\triangle\)H of fluorine is less negative than that of chlorine, but fluorine is a stronger oxidising agent than chlorine, why?

Chalcogens belongs to p-block. Give reason.

Account for the following: (i) O-O bond lengths in ozone molecule are identical. (ii) Most of the reactions in fluorine are exothermic.

How would you account for the following? The electron gain enthalpy with negative sign is less for oxygen than that of sulphur.

Give the reason for bleaching action of Cl2.

There is a huge difference between the melting and boiling points of oxygen and sulphur. Why?

Acidic character increases from HF to HI. I State whether the above statement is True or false and give reason for your answer.

(i) Give correct order of boiling point of hydride of group 17. (ii) Fluorine exhibits only -1 oxidation state whereas other halogens show +1, +3, +5 and +7 oxidation state also Explain.

Why fluorine is more reactive than other halogens?

Give reason for the following: F2 is more reactive than CIF3 but CIF3 is more reactive than Cl2

Give two uses of nitrogen

Give the uses of helium.

Part - C

Generic 3 - Answer All Question

Out of H2O and H2S which one has higher bond angle and why?

Explain the structure of ammonia

Complete the following reactions (l) Cl2+ H20\(\longrightarrow \)? (ii) XeF6 + 2H20 \(\longrightarrow \) ? (Iii) XeF6 + 2H20\(\longrightarrow \)?

Explain the commercial method of preparation of nitric acid. (or) How nitric acid is prepared by Ostwald's process

Give a reason to support that sulphuric acid is a dehydrating agent.

Explain the characteristic properties of hydrogen halides.

Give the balanced equation for the reaction between chlorine with cold NaOh and hot NaOH.

Why CIF 3 exists but FCl3 does not exist - Give reason.

CIF3 molecule has aT-shaped structure and not a trigonal planar one. Why?

What is Haber's process? (or) How is ammonia synthesized by Haber's process?

Name a reaction for the estimation of Ozone.

Part - D

Generic 5 - Answer All Question

Suggest a reason why HF is a weak acid, whereas binary acids of the all other halogens are strong acids.

Write the valence shell electronic configuration of group-15 elements.

Account for the following: (i) Reducing character decreases from SO2 to TeO2. (ii) Xenon forms compounds with fluorine and oxygen only.

What happens when PCl5 is heated?

What type of hybridisation occur in a) BrF5 b) BrF3

Comment

Other Study material

12th Chemistry Weekly Test - 3 ( Chemistry in Ever

12th Chemistry Weekly Test - 1 (Hydroxy Compounds

The basicity of pyrophosphorous acid ( H₄P₂O₅) is

Thr hybridisation and shape of SF₆ is respectively?

Strong reducing behaviour of H₃PO₂ is due to______

When Copper is heated with cone HNO₃ it produces

In which of the following , NH₃ is not used?

Assertion : bond dissociation energy of fluorine is greater than chlorine gas
Reason: chlorine has more electronic repulsion than fluorine.

(i) Nitric oxide becomes brown when released in air.why?
(ii) BiCl₃ is more stable than BiCl₃, Why?

How is SO₂ an air pollutant?

Account for the following:
(i) O-O bond lengths in ozone molecule are identical.
(ii) Most of the reactions in fluorine are exothermic.

Give the reason for bleaching action of Cl₂.

(i) Give correct order of boiling point of hydride of group 17.
(ii) Fluorine exhibits only -1 oxidation state whereas other halogens show +1, +3, +5 and +7 oxidation state also Explain.

Give reason for the following:
F₂ is more reactive than CIF₃ but CIF₃ is more reactive than Cl₂

Out of H₂O and H₂S which one has higher bond angle and why?

Complete the following reactions
(l) Cl₂+ H₂0\(\longrightarrow \)?
(ii) XeF₆ + 2H₂0 \(\longrightarrow \) ?
(Iii) XeF₆ + 2H₂0\(\longrightarrow \)?

Why CIF ₃ exists but FCl₃ does not exist - Give reason.

CIF₃ molecule has aT-shaped structure and not a trigonal planar one. Why?

Account for the following:
(i) Reducing character decreases from SO₂ to TeO₂.
(ii) Xenon forms compounds with fluorine and oxygen only.

What happens when PCl₅ is heated?

What type of hybridisation occur in
a) BrF₅
b) BrF₃