Chemistry · JEE

Chemical equations and stoichiometry Mock Test for JEE

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Syllabus context

Part of Some Basic Concepts in Chemistry in JEE Main Chemistry.

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Q1ChemistryUnit 1: Some Basic Concepts in Chemistry

Volume of

N_{2},

in litres, liberated on heating 6.4 g of

N H_{4} N O_{2}

is:

Q2ChemistryUnit 1: Some Basic Concepts in Chemistry

On dividing 0.46 by

15.374,

the actual answer is

0.02992 .

The correctly reported answer will be:

Q3ChemistryUnit 1: Some Basic Concepts in Chemistry

Equation for the following reaction.

\boldsymbol{C u}+\boldsymbol{x} \boldsymbol{H} \boldsymbol{N} \boldsymbol{O}_{3} \rightarrow \boldsymbol{C u}\left(\boldsymbol{N} \boldsymbol{O}_{3}\right)_{2}+

2 H_{2} O+2 N O_{y}

Find the value of

x

and

y

Q4ChemistryUnit 1: Some Basic Concepts in Chemistry

heated together, the maximum weight of

C l_{2}

gas evolved will be:

Q5ChemistryUnit 1: Some Basic Concepts in Chemistry

In the reaction

4 N H_{3}+5 O_{2} \longrightarrow

4 N O+6 H_{2} O,

when one mole of ammonia and one mole of oxygen are made to react to completion, then

Q6ChemistryUnit 1: Some Basic Concepts in Chemistry

White phosphorous reacts with limited chlorine and the product is hydrolyzed in the presence of water. What would be the mass of HCl obtained by the hydrolysis of the product formed by the reaction of 62 g of white phosphorus with chlorine in the presence of water?

Q7ChemistryUnit 1: Some Basic Concepts in Chemistry

\boldsymbol{F} \boldsymbol{e}_{\boldsymbol{x}} \boldsymbol{O}_{3}(\boldsymbol{s})+\boldsymbol{2} \boldsymbol{A} \boldsymbol{l}(\boldsymbol{s}) \rightarrow \boldsymbol{2} \boldsymbol{F} \boldsymbol{e}(\boldsymbol{l})+

\boldsymbol{A l}_{2} \boldsymbol{O}_{\boldsymbol{y}}(\boldsymbol{s})+\boldsymbol{H} \boldsymbol{e} \boldsymbol{a} \boldsymbol{t}

Find the value of

x

and

y

Q8ChemistryUnit 1: Some Basic Concepts in Chemistry

The standard solution of sodium hydroxide cannot be prepared by direct weighing of cold sodium hydroxide because it is :

Q9ChemistryUnit 1: Some Basic Concepts in Chemistry

50 \mathrm{mL}

of sample of hard water gave good lather with

6 \mathrm{mL}

of standard soap solution (1 mL soap solutions = 1 mg

\mathrm{CaCO}_{3}

. If the hardness is only due to

M g\left(H C O_{3}\right)_{2},

the weight of milk of lime required to remove the hardness completely from

100 \mathrm{kg}

of that sample of water is:

Q10ChemistryUnit 1: Some Basic Concepts in Chemistry

Calculate the volume of

\mathrm{CO}_{2}

formed at STP when 2.32 g of zinc carbonate decomposes with no further loss in weight.

Q11ChemistryUnit 1: Some Basic Concepts in Chemistry

Calcium carbonate decomposes into calcium oxide and carbon dioxide. The reactant is:

Q12ChemistryUnit 1: Some Basic Concepts in Chemistry

The mass of carbon anode consumed (giving of carbon dioxide) in the production of

270 \mathrm{kg}

aluminium metal bum bauxite by Hall process is: (Atomic

\operatorname{mass} A l=27)

Q13ChemistryUnit 1: Some Basic Concepts in Chemistry

10 \mathrm{L}

of hard water required

0.56 \mathrm{g}

of lime (CaO) for removing hardness. Hence, the temporary hardness in ppm (part per million) of

C a C O_{3}

is :

Q14ChemistryUnit 1: Some Basic Concepts in Chemistry

How many grams of magnesium oxide is formed when 4.8 gm of magnesium is combined with

3.2 \mathrm{gm}

of oxygen?

Q15ChemistryUnit 1: Some Basic Concepts in Chemistry

Water gas is an equi-molar mixture of hydrogen and carbon monoxide. If 250 litres of water gas is burnt in air. Assuming both reactants and products are at same temperature and pressure, the volume of

O_{2}

required is

2 C O+O_{2} \rightarrow 2 C O_{2} ; 2 H_{2}+O_{2} \rightarrow

2 H_{2} O

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For a topic-level test, aim for 20–30 minutes. For a full subject mock, allow 60–90 minutes to mirror JEE timing.

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Aim for 70%+ accuracy initially, then push toward 85%+ as your exam date approaches. Review explanations for every wrong answer.

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