11th Chemistry Monthly Test - 3 ( Basic Concepts of Chemistry and Chemical Calculations )

MABS Institution

11th Chemistry Monthly Test - 3 ( Basic Concepts of Chemistry and Chemical Calculations )-Aug 2020

Time : 2.00 Hours

Part - A

Generic 2 - Answer All Question

The density of carbon dioxide is equal to 1.965 kgm-³ at 273 K and 1 atm pressure. calculate the molar mass of CO₂

Calculate the molar mass of the following compounds. - acetone [CH₃ COCH₃]

Balance the following equations by oxidation number method - \(Cu+{ HNO }_{ 3 }\longrightarrow Cu\left( { No }_{ 3 } \right) _{ 2 }+{ No }_{ 2 }+{ H }_{ 2 }O\)

What do you understand by the term oxidation number?

Balance the following equations by oxidation number method - \({ KMn }O_{ 4 }+{ H }_{ 2 }{ C }_{ 2 }{ O }_{ 4 }+{ H }_{ 2 }{ SO }_{ 4 }\longrightarrow { K }_{ 2 }{ SO }_{ 4 }+{ MnSO }_{ 4 }+{ CO }_{ 2 }+{ H }_{ 2 }O\)

Balance the following equations by ion electron method \(Zn+{ NO }_{ 3 }^{ - }\longrightarrow { Zn }^{ 2+ }+No\)

What do you understand by the term mole.

Calculate the molar mass of the following compounds. -Sulphurci Acid [H₂SO₄]

Calculate the molar mass of the following compounds. -boric Acid [H₃BO₃]

Which contains the greatest number of moles of oxygen atoms
i) 1 mol of ethanol
ii) 1 mol of formic acid
iii) 1 mol of H₂O

Balance the following equations by oxidation number method - \({ K }Mno_{ 4 }+{ Na }_{ 2 }{ So }_{ 3 }\longrightarrow { MnO }_{ 2 }+{ Na }_{ 2 }{ So }_{ 4 }+KOH\)

Define equivalent mass

Balance the following equations by ion electron method \({ Na }_{ 2 }{ S }_{ 2 }{ O }_{ 3 }+{ I }_{ 2 }\longrightarrow { Na }_{ 2 }{ S }_{ 4 }{ O }_{ 6 }+NaI\)

Define relative atomic mass.

Part - B

Generic 3 - Answer All Question

Balance the following reaction by oxidation number method.

How many moles of barium sulphate is precipitated when 1 mole of aluminium sulphate reacts completely with barium chloride?

Calculate the oxidation number of underlined atoms \(H_{ 4 }\underline { { P }_{ 2 } } { O }_{ 7 }\)

Calculate the number of moles in the following 4.66 mg of silicon

Write down the formulae for calculating the equivalent mass of an acid, base and oxidizing agent.

Calculate the number of moles in the following 65.6 mg of oxygen

Identify the type of redox reaction taking place in the following
\(\overset { 0 }{ { Ca }_{ (s) } } +\overset { +1 }{ 2 } \overset { -2 }{ { H }_{ 2 }O_{ (l) } } \longrightarrow \overset { +2 }{ Ca } \overset { -2+1 }{ { (0H) }_{ 2(aq) } } +\overset { 0 }{ H } _{ 2(g) }\)

How are 0.5 mol Na₂CO₃ and 0.50 M Na₂CO₃ different?

Mixture of salt and water is a solution while that of oil and water is not. Explain

Decide whether each of the following reaction involves oxidation reduction reaction or not. If it does,identify which species is oxidised and which gets oxidised?
\({ 4CH }_{ 3 }-\overset { \overset { O }{ || } }{ C } -{ CH }_{ 3 }+LiAl{ H }_{ 4 }={ 4H }_{ 2 }O\rightleftharpoons { 4CH }_{ 3 }-\overset { \overset { OH }{ || } }{ CH } -{ CH }_{ 3 }+LiOH+Al({ OH })_{ 3 }\)

Calculate the number of moles present in the following 90 g of magnesium oxide

What will be the molecular formula for the compound, whose empirical formula is CH₂CI and molar mass is 98.96 g?

Calculate the oxidation number of underlined atoms \(\underline { C } I{ O }_{ 3 }\)^-

Write the simplest formula for the following. - C₆H₁₂O₆

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11th Chemistry Monthly Test - 3 ( Basic Concepts of Chemistry and Chemical Calculations )

MABS Institution

11th Chemistry Monthly Test - 3 ( Basic Concepts of Chemistry and Chemical Calculations )-Aug 2020

Part - A

Generic 2 - Answer All Question

The density of carbon dioxide is equal to 1.965 kgm-3 at 273 K and 1 atm pressure. calculate the molar mass of CO2

Calculate the molar mass of the following compounds. - acetone [CH3 COCH3]

Balance the following equations by oxidation number method - \(Cu+{ HNO }_{ 3 }\longrightarrow Cu\left( { No }_{ 3 } \right) _{ 2 }+{ No }_{ 2 }+{ H }_{ 2 }O\)

What do you understand by the term oxidation number?

Balance the following equations by oxidation number method - \({ KMn }O_{ 4 }+{ H }_{ 2 }{ C }_{ 2 }{ O }_{ 4 }+{ H }_{ 2 }{ SO }_{ 4 }\longrightarrow { K }_{ 2 }{ SO }_{ 4 }+{ MnSO }_{ 4 }+{ CO }_{ 2 }+{ H }_{ 2 }O\)

Balance the following equations by ion electron method \(Zn+{ NO }_{ 3 }^{ - }\longrightarrow { Zn }^{ 2+ }+No\)

What do you understand by the term mole.

Calculate the molar mass of the following compounds. -Sulphurci Acid [H2SO4]

Calculate the molar mass of the following compounds. -boric Acid [H3BO3]

Which contains the greatest number of moles of oxygen atoms i) 1 mol of ethanol ii) 1 mol of formic acid iii) 1 mol of H2O

Balance the following equations by oxidation number method - \({ K }Mno_{ 4 }+{ Na }_{ 2 }{ So }_{ 3 }\longrightarrow { MnO }_{ 2 }+{ Na }_{ 2 }{ So }_{ 4 }+KOH\)

Define equivalent mass

Balance the following equations by ion electron method \({ Na }_{ 2 }{ S }_{ 2 }{ O }_{ 3 }+{ I }_{ 2 }\longrightarrow { Na }_{ 2 }{ S }_{ 4 }{ O }_{ 6 }+NaI\)

Define relative atomic mass.

Part - B

Generic 3 - Answer All Question

Balance the following reaction by oxidation number method.

How many moles of barium sulphate is precipitated when 1 mole of aluminium sulphate reacts completely with barium chloride?

Calculate the oxidation number of underlined atoms \(H_{ 4 }\underline { { P }_{ 2 } } { O }_{ 7 }\)

Calculate the number of moles in the following 4.66 mg of silicon

Write down the formulae for calculating the equivalent mass of an acid, base and oxidizing agent.

Calculate the number of moles in the following 65.6 mg of oxygen

Identify the type of redox reaction taking place in the following \(\overset { 0 }{ { Ca }_{ (s) } } +\overset { +1 }{ 2 } \overset { -2 }{ { H }_{ 2 }O_{ (l) } } \longrightarrow \overset { +2 }{ Ca } \overset { -2+1 }{ { (0H) }_{ 2(aq) } } +\overset { 0 }{ H } _{ 2(g) }\)

How are 0.5 mol Na2CO3 and 0.50 M Na2CO3 different?

Mixture of salt and water is a solution while that of oil and water is not. Explain

Calculate the number of moles present in the following 90 g of magnesium oxide

What will be the molecular formula for the compound, whose empirical formula is CH2CI and molar mass is 98.96 g?

Calculate the oxidation number of underlined atoms \(\underline { C } I{ O }_{ 3 }\)-

Write the simplest formula for the following. - C6H12O6

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The density of carbon dioxide is equal to 1.965 kgm-³ at 273 K and 1 atm pressure. calculate the molar mass of CO₂

Calculate the molar mass of the following compounds. - acetone [CH₃ COCH₃]

Calculate the molar mass of the following compounds. -Sulphurci Acid [H₂SO₄]

Calculate the molar mass of the following compounds. -boric Acid [H₃BO₃]

Which contains the greatest number of moles of oxygen atoms
i) 1 mol of ethanol
ii) 1 mol of formic acid
iii) 1 mol of H₂O

Identify the type of redox reaction taking place in the following
\(\overset { 0 }{ { Ca }_{ (s) } } +\overset { +1 }{ 2 } \overset { -2 }{ { H }_{ 2 }O_{ (l) } } \longrightarrow \overset { +2 }{ Ca } \overset { -2+1 }{ { (0H) }_{ 2(aq) } } +\overset { 0 }{ H } _{ 2(g) }\)

How are 0.5 mol Na₂CO₃ and 0.50 M Na₂CO₃ different?

What will be the molecular formula for the compound, whose empirical formula is CH₂CI and molar mass is 98.96 g?

Calculate the oxidation number of underlined atoms \(\underline { C } I{ O }_{ 3 }\)^-

Write the simplest formula for the following. - C₆H₁₂O₆