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

St. Britto Hr. Sec. School - Madurai

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

Time : 1.30 Hours

Part - A

Multiple Choice Question - Answer All Question

Oxalic acid on heating with cone H₂SO₄ gives

CO only
CO₂ only
CO₂+ H₂0
CO + CO₂ + H₂O

The incorrect statement regarding structure of ozone is______

Bond angle is less than 120°
It is linear
The two oxygen-oxygen bond length in ozone are identical
Both (b) and (c).

hot concentrated H₂SO₄ is miderately strong oxidising agent which of the following reactions does not show oxidising behaviour?
\(Cu+2H_{ 2 }{ SO }_{ 4 }\longrightarrow { CuSO }_{ 4 }+{ SO }_{ 2 }+{ 2H }_{ 2 }O\)

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

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

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

The incorrect statement among the following is_________

Reducing character of hydrides of group 15 increases down the group
Basicity of hydrides of group 15 increases down the group
NCl₅ does not exist
Phosphorus and arsenic can form P\(\pi \)-drt bond but not nitrogen

Which of the following is correct?

H₃PO₃ is dibasic and reducing
H₃PO₃ is dibasic and non-reducing
H₃PO₄ is tribasic and reducing
H₃PO₃ is tribasic and non-reducing

Oxidation states of P in H₄P₂O₅' H₄P₂O₆, H₄P₂O₇ are respectively _________

+3, +4, +5
+3, +5, +4
+5,+3,+4
+5,+4,+3

Orthophosphorus acid on heating gives________

Hypophosphorus
Orthophosphoric acid
Phosphine gas
both (b) and (c)

Among the following, which is the strongest oxidizing agent?

Cl₂
F₂
Br₂
l₂

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

P₄O₆ reacts with cold water to give

H₃PO₃
H₄P₂O₇
HPO₃
H₃PO₄

Part - B

Generic 2 - Answer All Question

Discuss the oxidising power of fluorine

Explain Why inspite of nearly the same electronegativity, nitrogen forms hydrogen bonding while chlorine does not - Give reason.

Give the reason for bleaching action of Cl₂.

Although \(\triangle\)H of fluorine is less negative than that of chlorine, but fluorine is a stronger oxidising agent than chlorine, why?
How is ammonia prepared in the lab?

What is inert pair effect?

Part - C

Generic 3 - Answer All Question

Write the reason for the anamolous behaviour of Nitrogen.

Give a test for sulphate?

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.
Give the uses of sulphuric acid.

How will you prepare chlorine in the laboratory?

Part - D

Generic 5 - Answer All Question

Explain the oxidising property of sulphuric acid.

An amorphous solid (A) burns in air to form a gas (B)which turns lime water milky. The gas is also produced as a byproduct during roasting of sulphide ore. This gas decolourises acidified aqueous KMnO₄ solution and reduces Fe³⁺ to Fe²⁺. Identify the solid 'A' and the gas 'B' and write the reactions involved.

Explain the Deacon's process
Deduce the oxidation number of oxygen in hypofluorous acid – HOF.

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

St. Britto Hr. Sec. School - Madurai

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

Part - A

Multiple Choice Question - Answer All Question

Oxalic acid on heating with cone H2SO4 gives

The incorrect statement regarding structure of ozone is______

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

The correct order of the thermal stability of hydrogen halide is

The incorrect statement among the following is_________

Which of the following is correct?

Oxidation states of P in H4P2O5' H4P2O6, H4P2O7 are respectively _________

Orthophosphorus acid on heating gives________

Among the following, which is the strongest oxidizing agent?

When Copper is heated with cone HNO3 it produces

P4O6 reacts with cold water to give

Part - B

Generic 2 - Answer All Question

Discuss the oxidising power of fluorine

Explain Why inspite of nearly the same electronegativity, nitrogen forms hydrogen bonding while chlorine does not - Give reason.

Give the reason for bleaching action of Cl2.

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

How is ammonia prepared in the lab?

What is inert pair effect?

Part - C

Generic 3 - Answer All Question

Write the reason for the anamolous behaviour of Nitrogen.

Give a test for sulphate?

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.

Give the uses of sulphuric acid.

How will you prepare chlorine in the laboratory?

Part - D

Generic 5 - Answer All Question

Explain the oxidising property of sulphuric acid.

Explain the Deacon's process

Deduce the oxidation number of oxygen in hypofluorous acid – HOF.

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Oxalic acid on heating with cone H₂SO₄ gives

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

Oxidation states of P in H₄P₂O₅' H₄P₂O₆, H₄P₂O₇ are respectively _________

When Copper is heated with cone HNO₃ it produces

P₄O₆ reacts with cold water to give

Give the reason for bleaching action of Cl₂.

What is the hybridisation of iodine in IF₇? Give its structure?