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All Chemistry 10 papers

Matric 10 · Past paper

Chemistry 10 past paper 2024

79 published questions in this index. The full practice view lets you work through them and track your own attempts.

24 MCQs55 written questionsPractise this paper

Question index

2(iv)
Briefly explain the strange behavior of water with temperature variation and its importance.
Part B2 marksannualMatter
7
The density of water is maximum at:
MCQannualMatter
10
Percentage of Nitrogen in urea is
MCQannualStoichiometry
10
Percentage of sodium chloride in sea water:

This is a skimmable index, not a replacement for the study surface. Open the practice view to answer questions and use the linked study material.

Chemistry 10 Past Paper 2024 | Notely

MCQ

annual

Stoichiometry

2

In electrolytic refining of copper, ______ is used as anode called:

MCQannualElectrochemistry

1

In given expression what is the product? Kc = [R][S]/[P][Q][T]

MCQannualReaction Kinetics

2(v)

Determine the reactants and products in the given expressions: a. Kc = [H2O][CO]/[H2][CO2] b. Kc = [CH3OH]/[2H2][CO]

Part B1.5 marksannualReaction Kinetics

2(v)

Determine Kc expression and units. H2 + I2 2HI

Part B1.5 marksannualReaction Kinetics

2(vi)

What is meant by chemical equilibrium in a reversible chemical reaction? Give an example.

Part B2 marksannualReaction Kinetics

4

For given reaction P + Q R + S, Kc = ?

MCQannualReaction Kinetics

Q.3

Describe equilibrium constant. Derive Kc expression for general reaction: aA + bB cC + dD

Part C2 marksannualReaction Kinetics

Q.3

State Law of Mass Action. Drive an expression to determine equilibrium constant.

Part C2 marksannualReaction Kinetics

2

The pH of acid rain is less than:

MCQannualSalts

2(iii)

Write down balanced chemical equations showing the formation of salt in the following. a. Acid-Base Reaction b. Reaction of acid with metal oxide

Part B1.5 marksannualSalts

2(iv)

Write down balanced chemical equations showing the formation of salt. a. Reaction of Salt with salt b. Reaction of acid with metal oxide

Part B1.5 marksannualSalts

2(vi)

Hard water hampers the cleaning action of soap. How?

Part B1 marksannualSalts

2(vii)

What are Arrhenius acids and bases? Briefly explain with examples.

Part B1.5 marksannualSalts

2(viii)

What is meant by self-ionization of water? Write its chemical equation.

Part B1 marksannualSalts

2(x)

What is meant by self-ionization of water? Write its chemical equation.

Part B1.5 marksannualSalts

3

Complete the reaction. AgNO3 + NaCl -> ______ + NaNO3

MCQannualSalts

5

Complete the reaction. H2CO3 + 2NaOH -> ______ + 2H2O

MCQannualSalts

5

The pH of acid rain is less than:

MCQannualSalts

9

The soap forms scum with:

MCQannualSalts

12

Which water causes kettle (pots) to fur?

MCQannualSalts

Q.3

Describe the Bronsted-Lowry concept of acid and base. Explain the following reaction in light of this concept: H2O + NH3 -> NH4+ + OH-

Part C3 marksannualSalts

Q.3

Describe Lewis concept of acids and bases with examples.

Part C3 marksannualSalts

Q.4

What is soft water? Explain two methods for removing permanent hardness of water.

Part C2 marksannualSalts

Q.4

What is Hardness of water? Explain the following methods to remove hardness of water. a. By Ion exchange method b. By boiling

Part C2 marksannualSalts

1

The naturally occurring metallurgical compounds are:

MCQannualNitrogen, Sulphur And Metals

2(i)

What is slaked lime? How is it produced during Solvay process?

Part B1 marksannualNitrogen, Sulphur And Metals

2(i)

Write three demerits of Acid rain.

Part B1 marksannualNitrogen, Sulphur And Metals

2(ii)

Write the names of the three raw materials used to manufacture sodium carbonate.

Part B1 marksannualNitrogen, Sulphur And Metals

2(ii)

Write sources and harmful effects of any three major Air Pollutants.

Part B1 marksannualNitrogen, Sulphur And Metals

2(ix)

Write down three advantages of Solvay Process.

Part B1 marksannualNitrogen, Sulphur And Metals

2(vi)

Briefly explain roasting process with two examples.

Part B1.5 marksannualNitrogen, Sulphur And Metals

2(vii)

What is calcination? How is CO2 released reused in the Solvay Process?

Part B1 marksannualNitrogen, Sulphur And Metals

2(viii)

Briefly describe acid rain. Write its causes.

Part B1.5 marksannualNitrogen, Sulphur And Metals

2(x)

Write chemical reactions to show ozone layer formation.

Part B1.5 marksannualNitrogen, Sulphur And Metals

2(xi)

What is global warming? How is it caused?

Part B1 marksannualNitrogen, Sulphur And Metals

2(xi)

What is global warming? How is it caused?

Part B1 marksannualNitrogen, Sulphur And Metals

2(xi)

What is Urea? Write the names of raw materials used to prepare urea.

Part B1 marksannualNitrogen, Sulphur And Metals

4

The percentage of Nitrogen in the air is:

MCQannualNitrogen, Sulphur And Metals

6

One Ozone molecule has ______ number of oxygen atoms.

MCQannualNitrogen, Sulphur And Metals

7

Which gas has highest percentage in the air?

MCQannualNitrogen, Sulphur And Metals

9

Ozone is an allotropic form of:

MCQannualNitrogen, Sulphur And Metals

11

Oil detergent is used to concentrate a metallic ore in:

MCQannualNitrogen, Sulphur And Metals

Q.5

Differentiate between stratosphere and troposphere.

Part C2 marksannualNitrogen, Sulphur And Metals

Q.5

Draw flowsheet diagram of Solvay process.

Part C0.5 marksannualNitrogen, Sulphur And Metals

Q.5

What is Bessemerization? How it is different from cyclone separation?

Part C2 marksannualNitrogen, Sulphur And Metals

Q.6

Differentiate between stratosphere and troposphere.

Part C2 marksannualNitrogen, Sulphur And Metals

2(ii)

How is methane prepared from methyl chloride? Write complete balanced reaction.

Part B1 marksannualOrganic Chemistry

2(iii)

Write the structural formula of the following. a. Neo-pentane b. n-propane c. Ethanol

Part B1 marksannualOrganic Chemistry

2(viii)

Differentiate between open chain and closed chain compounds with the help of structural formulas.

Part B1.5 marksannualOrganic Chemistry

2(viii)

Differentiate between Alicyclic and cyclic compounds with the help of structural formulas.

Part B1.5 marksannualOrganic Chemistry

2(x)

Identify and name the functional groups in the following: a. CH3OCH3 b. CH3COOH c. CH3NH2

Part B1 marksannualOrganic Chemistry

8

The reduction of alkyl halides takes place in the presence of:

MCQannualOrganic Chemistry

8

Methane reacts with explosion with:

MCQannualOrganic Chemistry

2(i)

Write names of the following: a. C3H8 b. C2H4Br2 c. C4H8

Part B1 marksannualHydrocarbons

2(i)

Why lighter alkanes are used as fuel?

Part B1 marksannualHydrocarbons

2(iv)

Derive alkyl radicals from the following alkanes. Write formulas as well. a. Ethane b. Pentane c. Butane

Part B1 marksannualHydrocarbons

2(iv)

Derive alkyl radicals from the following: a. Methane b. Iso-butane c. Propane

Part B1 marksannualHydrocarbons

2(ix)

Write two methods for the preparation of ethane. Give chemical equations.

Part B1.5 marksannualHydrocarbons

2(ix)

Write two methods for preparation of alkene.

Part B1.5 marksannualHydrocarbons

2(x)

Complete reaction: a. Cl-HC=CH-Cl + Zn -> b. CH3-C≡CH + 2H2 (Ni, 200-300°C) ->

Part B1.5 marksannualHydrocarbons

11

Stem 'But-' represents ______ number of carbon atoms.

MCQannualHydrocarbons

Q.5

Write chemical equations showing reaction of KMnO4 with, alkenes and alkynes.

Part C2 marksannualHydrocarbons

Q.6

Write names and uses of any four fractions obtained by fractional distillation of petroleum.

Part C1 marksannualHydrocarbons

Q.6

Write chemical equations showing reactions of KMnO4 with, alkenes and alkynes.

Part C2 marksannualHydrocarbons

Q.6

Enlist any four fractions obtained by distillation of petroleum. Also write their uses.

Part C1 marksannualHydrocarbons

12

The functional group of aldehydes is:

MCQannualCarboxylic Compounds

2(iii)

Briefly describe following with examples. a. Mono saccharides b. Proteins c. Vitamins

Part B1 marksannualBiochemistry

2(iii)

Briefly describe following with examples. a. Carbohydrates b. Lipids c. Oligosaccharides

Part B1 marksannualBiochemistry

2(ix)

Sucrose, lactose and maltose are disaccharides. How?

Part B1 marksannualBiochemistry

2(v)

Identify any two functional groups found in Amino acid. Draw structure of an amino acid.

Part B1 marksannualBiochemistry

2(v)

Compare between essential and non-essential amino acids.

Part B1.5 marksannualBiochemistry

3

Molecules of amino acids join to form a protein by eliminating ______ molecule.

MCQannualBiochemistry

6

If peptide has amino group on left then ______ group will be on the right side.

MCQannualBiochemistry

Q.4

What is RNA? Describe structure and function of RNA.

Part C2 marksannualBiochemistry

Q.4

What is Nucleic Acid? Differentiate between DNA and RNA?

Part C2 marksannualBiochemistry