KAMAL GRAMMAR SCHOOL

CHEMISTRY-I For IX
Time: 3 hours Marks: 60
General Instructions:
Section ‘A’: It consists of 24 Multiple Choice Questions (MCQs) and all of them are to be
answered. Section ‘B’: It consists of 12 Short Answer Questions and Eight (08) questions are to be
answered. Section ‘C’: It consists of 04 Descriptive Questions and Two (02) questions are to be
answered.

Section “A” (Compulsory) Multiple Choice Questions (MCQs)

Time: 30 minutes Marks: 24

Note:
(i) Attempt all the questions from this section.
(ii) Do not copy down the part questions. Write only the answer against the proper number
of the question and its part according to the question paper.
(iii) Each question carries 01 mark.
(iv) Write the code of your question paper in bold letters in the beginning of the
answerscript.

Q.1. Choose the correct answer for each from the given options:
(i) Al – Razi prepared ethyl alcohol by:
* Crystallization process * Chemical Process
* Sterilization *Fermentation process

(ii) Neutron was discovered by:

* Thomson * Chadwick * Bohr * Rutherford

(iii) Elements of sub group IIA are called:

* Alkali metals * Halogens * Alkaline earth metals * Noble gases

(iv) Mass number of an element represents sum of number of

* Protons and Neutrons * Protons and Electrons
* Electrons and neutrons * None of these

(v) The most electronegative elements is:

* Oxygen * Chlorine * Fluorine * Nitrogen

(vi) Valency of noble gases is:

* Zero * One * Two * Three

(vii) Which one of the following is the lightest metal?

* Calcium * Magnesium * Lithium * Sodium

(viii) The escape of a gas molecule through a pin hole is called:

* Diffusion * Effusion * Osmosis * All of these

(ix) Brass is an alloy of:

* Copper and Lead * Copper and Tin * Copper and Silver * Copper and Zinc
3
(x) The number of moles of solute dissolved in 1L or 1 dm of a solution is called_____________.
* Molarity * Normality * Mole fraction * Molality

(xi) The unit of electrochemical equivalent is:

* Gram * Gram/Ampere * Gram/Coulomb * Coulomb/gram
 (xii) One Faraday is equal to:
* 96.5 Cmol- 1 * 96500C * 6.02x1023 mol- 1 * 96.5x1023 Cmol- 1

(xiii) Which Halogen exists in liquid state?

* F2 * C12 * Br2 * At

(xiv) A formula that indicates actual number of atoms in a molecule is called:

* Chemical formula * Empirical formula * Molecular formula * Formula mass

(xv) Which rays are used for sterilization of medical instruments

* -rays * β-rays * γ-rays * X-rays

(xvi) The amount of energy given out when an electron is added to an atom is called:
* Lattice energy * Ionization energy * Electronegativity * Electron affinity

(xvii) The vertical columns in the periodic table are called:

* Periods * Groups * Long period * Short period

(xviii) At room temperature most of ionic compounds are:

* Amorphous solids * Crystalline solids * Liquids * Gases

(xix) Which one of the following gas diffuses fastest?

* Hydrogen * Helium * Fluorine * Chlorine

(xx) Density of a gas increases, when its:

* Temperature is increased * Pressure is increased
* Volume is kept constant * None of these

(xxi) The mobility of liquids is lesser than:

* Solids * Gases * Plasma * Bose Einstein Condensate

Solubility is usually expressed in grams of solute per _____ gram of solvent.

(xxii) * 10 * 100 * 1,000 * 10,000

A solution that contains large amount of dissolved solute is called:

* Dilute solution * Saturated solution * Super saturated solution * Concentrated
(xxiii) solution

A 5 percent (w/w) sugar solution means that:

* 5 g of sugar is dissolved in 90 g of water * 5 g of sugar is dissolved in 100 g of water
(xxiv) * 5 g of sugar is dissolved in 105 g of water * 5 g of sugar is dissolved in 95 g of water
 Marks: 24
Note:
(i) Attempt all the questions from this section.
(ii) Do not copy down the part questions. Write only the answer against the proper number of the
question and its part according to the question paper.
(iii) Each question carries 01 mark.
(iv) Write the code of your question paper in bold letters in the beginning of the answer script.

Q.1. Choose the correct answer for each from the given options:

i. Brass is an alloy of:

* Copper and Lead * Copper and Tin * Copper and Silver * Copper and Zinc
3
ii. The number of moles of solute dissolved in 1L or 1 dm of a solution is called_____________.
* Molarity * Normality * Mole fraction * Molality

iii. The unit of electrochemical equivalent is:

* Gram * Gram/Ampere * Gram/Coulomb * Coulomb/gram

iv. One Faraday is equal to:

* 96.5 Cmol- 1 * 96500C * 6.02x1023 mol- 1 * 96.5x1023 Cmol- 1

v. Which Halogen exists in liquid state?

* F2 * C12 * Br2 * At

vi. A formula that indicates actual number of atoms in a molecule is called:

* Chemical formula * Empirical formula * Molecular formula * Formula mass

vii. Which rays are used for sterilization of medical instruments

* -rays * β-rays * γ-rays * X-rays

viii. The amount of energy given out when an electron is added to an atom is called:
* Lattice energy * Ionization energy * Electronegativity * Electron affinity

ix. The vertical columns in the periodic table are called:

* Periods * Groups * Long period * Short period
 x. At room temperature most of ionic compounds are:
* Amorphous solids * Crystalline solids * Liquids * Gases

xi. Which one of the following gas diffuses fastest?

* Hydrogen * Helium * Fluorine * Chlorine

xii. Density of a gas increases, when its:

* Temperature is increased * Pressure is increased
* Volume is kept constant * None of these

xiii. The mobility of liquids is lesser than:

* Solids * Gases * Plasma * Bose Einstein Condensate

xiv. Solubility is usually expressed in grams of solute per _____ gram of solvent.
* 10 * 100 * 1,000 * 10,000

xv. A solution that contains large amount of dissolved solute is called:

* Dilute solution * Saturated solution * Super saturated solution * Concentrated
solution

xvi. A 5 percent (w/w) sugar solution means that:

* 5 g of sugar is dissolved in 90 g of water * 5 g of sugar is dissolved in 100 g of water
* 5 g of sugar is dissolved in 105 g of water * 5 g of sugar is dissolved in 95 g of water

xvii. Al – Razi prepared ethyl alcohol by:

* Crystallization process * Chemical Process
* Sterilization *Fermentation process

xviii. Neutron was discovered by:

* Thomson * Chadwick * Bohr * Rutherford

xix. Elements of sub group IIA are called:

* Alkali metals * Halogens * Alkaline earth metals * Noble gases

xx. Mass number of an element represents sum of number of

* Protons and Neutrons * Protons and Electrons
* Electrons and neutrons * None of these

xxi. The most electronegative elements is:

* Oxygen * Chlorine * Fluorine * Nitrogen

xxii. Valency of noble gases is:

* Zero * One * Two * Three

xxiii. Which one of the following is the lightest metal?

* Calcium * Magnesium * Lithium * Sodium

xxiv. The escape of a gas molecule through a pin hole is called:

* Diffusion * Effusion * Osmosis * All of these
 Comprehensive Examination 2021-22 ACC/Z
CHEMISTRY-I For IX
Time: 3 hours Marks: 60

General Instructions:
Section ‘A’: It consists of 24 Multiple Choice Questions (MCQs) and all of them are to be
answered. Section ‘B’: It consists of 12 Short Answer Questions and Eight (08) questions are to be
answered. Section ‘C’: It consists of 04 Descriptive Questions and Two (02) questions are to be
answered.

Section “A” (Compulsory) Multiple Choice Questions (MCQs)

Time: 30 minutes Marks: 24

Note:
(i) Attempt all the questions from this section.
(ii) Do not copy down the part questions. Write only the answer against the proper number of the
see
question and its part according to the question paper.
(iii) Each question carries 01 mark.
(iv) Write the code of your question paper in bold letters in the beginning of the answer script.

Q.1. Choose the correct answer for each from the given options:

i. The vertical columns in the periodic table are called:

* Periods * Groups * Long period * Short period

ii. At room temperature most of ionic compounds are:

* Amorphous solids * Crystalline solids * Liquids * Gases

iii. Which one of the following gas diffuses fastest?

* Hydrogen * Helium * Fluorine * Chlorine

iv. Density of a gas increases, when its:

* Temperature is increased * Pressure is increased
* Volume is kept constant * None of these

v. The mobility of liquids is lesser than:

* Solids * Gases * Plasma * Bose Einstein Condensate

vi. Solubility is usually expressed in grams of solute per _____ gram of solvent.
* 10 * 100 * 1,000 * 10,000

vii. A solution that contains large amount of dissolved solute is called:

* Dilute solution * Saturated solution * Super saturated solution * Concentrated solution

viii. A 5 percent (w/w) sugar solution means that:

* 5 g of sugar is dissolved in 90 g of water * 5 g of sugar is dissolved in 100 g of water
* 5 g of sugar is dissolved in 105 g of water * 5 g of sugar is dissolved in 95 g of water

ix. Al – Razi prepared ethyl alcohol by:

* Crystallization process * Chemical Process
* Sterilization *Fermentation process

x. Neutron was discovered by:

* Thomson * Chadwick * Bohr * Rutherford
 xi. Elements of sub group IIA are called:
* Alkali metals * Halogens * Alkaline earth metals * Noble gases

xii. Mass number of an element represents sum of number of

* Protons and Neutrons * Protons and Electrons
* Electrons and neutrons * None of these

xiii. The most electronegative elements is:

* Oxygen * Chlorine * Fluorine * Nitrogen

xiv. Valency of noble gases is:

* Zero * One * Two * Three

xv. Which one of the following is the lightest metal?

* Calcium * Magnesium * Lithium * Sodium

xvi. The escape of a gas molecule through a pin hole is called:

* Diffusion * Effusion * Osmosis * All of these

xvii. Brass is an alloy of:

* Copper and Lead * Copper and Tin * Copper and Silver * Copper and Zinc
3
xviii. The number of moles of solute dissolved in 1L or 1 dm of a solution is
called_____________.
* Molarity * Normality * Mole fraction * Molality

xix. The unit of electrochemical equivalent is:

* Gram * Gram/Ampere * Gram/Coulomb * Coulomb/gram

xx. One Faraday is equal to:

* 96.5 Cmol- 1 * 96500C * 6.02x1023 mol- 1 * 96.5x1023 Cmol- 1
xxi. Which Halogen exists in liquid state?
* F2 * C12 * Br2 * At

xxii. A formula that indicates actual number of atoms in a molecule is called:

* Chemical formula * Empirical formula * Molecular formula * Formula mass

xxiii. Which rays are used for sterilization of medical instruments

* -rays * β-rays * γ-rays * X-rays

xxiv. The amount of energy given out when an electron is added to an atom is called:
* Lattice energy * Ionization energy * Electronegativity * Electron affinity
 KAMAL GRAMMAR SCHOOL
CHEMISTRY–I For IX
Time: 2 ½ hours Marks: 36
Section “ B” ( Short- Answer Questions)
Note. Attempt any Eight (08) questions from this section. All question carry equal marks. (24)

Q.2. Define Mole. Calculate the number of Moles in 14.6 g of Magnesium Bi Carbonate
[Mg(HCO3)2].
(Atomic mass of Mg = 24, H = 1, C = 12, O = 16)
Q.3. Write any three properties of Cathode OR Anode rays.
Q.4. Define Isotopes also explain isotopes of Hydrogen.
Q.5. Define Modern Periodic Table. How many groups and periods are present in it?
Q.6. Define the following:
(i) Matter (ii) Substance (iii) Valency
Q.7. Explain Boyle’s OR Charles's law of gases.
Q.8. Define solubility. Also write the name of factors affecting solubility.
Q.9. Write three differences between:
Ionic and Covalent Compound OR Solution and Suspension
Q. 10. Define Molarity also determine the Molarity of a solution that contain 375 gram of
NaOH in 950cm3 of solution.
(Atomic Mass of Na = 23, O = 16, H = 1)
OR
3
150 cm of a gas filled in a container at 500 torr pressure . What will be its volume when
pressure changes to 750 torr?
Q. 11. Balance the following chemical equations.
(i) KClO3 KCl +O2
(ii) C2 H2 + O2 CO2+H2O
(iii) NH3 + O2 NO + H2O
Q. 12. Define any three of the following terms.
(i) Electrolysis (ii) Dilution
(iii) Metallic bonding (iv) Diffusion

Section “ C” ( Detailed- Answer Questions)

Note: Attempt any Two (02) questions from this section. All question carry equal marks. (12)

Q. 14
Describe Rutherford’s experiment which led him to the discovery of the nucleus of an
atom.
Q. 15. Define Electrochemical Cells. Also explain structure and working of any one cell.
(i) Dry cell (ii) Lead storage battery
Q. 16. What is Ionic bond? How is an Ionic bond formed between Sodium and Chlorine
atoms resulting in the production of NaCl? Explain.
Q. 17. State and explain Faraday’s 1st law of Electrolysis and also draw neat and labeled diagram.