12th Chemistry Monthly Test - 2 ( p-Block Elements-I )

St. Britto Hr. Sec. School - Madurai

12th Chemistry Monthly Test - 2 ( p-Block Elements-I )-Aug 2020

Time : 2.00 Hours

Part - A

Generic 2 - Answer All Question

What happens to CO₂ when dissolved in water?

Give the uses of alum.

Write a short note on anamolous properties of the first element of p-block

Give the structure of CO and CO₂.

Among group 14 elements, name
(i) the most electro negative element
(ii) the most metallic element

What is inert pair effect?

Name the building block of zeolites. Why zeolites have high porosity?

Mention the physical properties of boranes.

How is boric acid extracted from borax?

What is water gas equilibrium?

Starting from Sicl₄, prepare the following in steps not exceeding the number given in parentheses.
(i) Silicon
(ii) Linear silicon containing methyl groups only
(iii) Na₂SiO₃

Give the uses of Borax

What are the uses of boron trifluoride?

Boron does not react directly with hydrogen. Suggest one method to prepare diborane from BF₃.

Write a note on Fisher tropsch synthesis

What is crystal field splitting?

What is phosgene? How is it prepared?

What is burnt alum?

What are alums?

Name the two important ores of Boron.

What is oxo process?

What are silicones?

(i) Silicones are used for making waterproof fabrics. Give reason.
(ii) Diamond - bad conductor of electricity.

What is catenation ? describe briefly the catenation property of carbon

Give the formula of chlorosilazanes. Explain its preparation from SiCI₄.

Draw the structure of borazole B₃N₃H₆.

Which one is more soluble in diethyl ether, anhydrous Alcl₃ or hydrated Alcl₃? Explain in terms of bonding.

Write the reaction of diboranes with water and alkali.

Describe briefly allotropism in p- block elements with specific reference to carbon

Explain the formation of boron trifluoride.

Part - B

Generic 5 - Answer All Question

A double salt which contains fourth period alkali metal (A) on heating at 500K gives (B). aqueous solution of (B) gives white precipitate with BaCl₂ and gives a red colour compound with alizarin. Identify A and B.

How will you identify borate radical?

What are the various methods by which carbon-di-oxide is prepared?

Distinguish between diamond and graphite.

A hydride of 2^nd period alkali metal (A) on reaction with compound of Boron (B) to give a reducing agent (C). identify A , B and C.

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12th Chemistry Monthly Test - 2 ( p-Block Elements-I )

St. Britto Hr. Sec. School - Madurai

12th Chemistry Monthly Test - 2 ( p-Block Elements-I )-Aug 2020

Part - A

Generic 2 - Answer All Question

What happens to CO2 when dissolved in water?

Give the uses of alum.

Write a short note on anamolous properties of the first element of p-block

Give the structure of CO and CO2.

Among group 14 elements, name (i) the most electro negative element (ii) the most metallic element

What is inert pair effect?

Name the building block of zeolites. Why zeolites have high porosity?

Mention the physical properties of boranes.

How is boric acid extracted from borax?

What is water gas equilibrium?

Starting from Sicl4, prepare the following in steps not exceeding the number given in parentheses. (i) Silicon (ii) Linear silicon containing methyl groups only (iii) Na2SiO3

Give the uses of Borax

What are the uses of boron trifluoride?

Boron does not react directly with hydrogen. Suggest one method to prepare diborane from BF3.

Write a note on Fisher tropsch synthesis

What is crystal field splitting?

What is phosgene? How is it prepared?

What is burnt alum?

What are alums?

Name the two important ores of Boron.

What is oxo process?

What are silicones?

(i) Silicones are used for making waterproof fabrics. Give reason. (ii) Diamond - bad conductor of electricity.

What is catenation ? describe briefly the catenation property of carbon

Give the formula of chlorosilazanes. Explain its preparation from SiCI4.

Draw the structure of borazole B3N3H6.

Which one is more soluble in diethyl ether, anhydrous Alcl3 or hydrated Alcl3? Explain in terms of bonding.

Write the reaction of diboranes with water and alkali.

Describe briefly allotropism in p- block elements with specific reference to carbon

Explain the formation of boron trifluoride.

Part - B

Generic 5 - Answer All Question

A double salt which contains fourth period alkali metal (A) on heating at 500K gives (B). aqueous solution of (B) gives white precipitate with BaCl2 and gives a red colour compound with alizarin. Identify A and B.

How will you identify borate radical?

What are the various methods by which carbon-di-oxide is prepared?

Distinguish between diamond and graphite.

A hydride of 2nd period alkali metal (A) on reaction with compound of Boron (B) to give a reducing agent (C). identify A , B and C.

Write a note on zeolites.

How are silicates classified? Give an example for each type of silicate.

How will you convert boric acid to boron nitride?

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What happens to CO₂ when dissolved in water?

Give the structure of CO and CO₂.

Among group 14 elements, name
(i) the most electro negative element
(ii) the most metallic element

Starting from Sicl₄, prepare the following in steps not exceeding the number given in parentheses.
(i) Silicon
(ii) Linear silicon containing methyl groups only
(iii) Na₂SiO₃

Boron does not react directly with hydrogen. Suggest one method to prepare diborane from BF₃.

(i) Silicones are used for making waterproof fabrics. Give reason.
(ii) Diamond - bad conductor of electricity.

Give the formula of chlorosilazanes. Explain its preparation from SiCI₄.

Draw the structure of borazole B₃N₃H₆.

Which one is more soluble in diethyl ether, anhydrous Alcl₃ or hydrated Alcl₃? Explain in terms of bonding.

A double salt which contains fourth period alkali metal (A) on heating at 500K gives (B). aqueous solution of (B) gives white precipitate with BaCl₂ and gives a red colour compound with alizarin. Identify A and B.

A hydride of 2^nd period alkali metal (A) on reaction with compound of Boron (B) to give a reducing agent (C). identify A , B and C.