9th class objective – Online Chemistry

9th Chemistry

Reference Books : National Book Foundation, KPK & Balochistan Text Book

Class 9th Chemistry notes according to latest FBISE syllabus following 2022-2023 Curriculum. Contains detailed video lectures, solved exercises, review questions, MCQs, pdf notes and past board papers solution.

FBISE-2026-1st Annual (Evening) Paper Objectives - Hard Area

FBISE-9th-2026-1st Annual-Evening Paper Objectives (Hard Area)

Total 12 MCQs

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1 / 12

1) Diamond and graphite are allotropic forms of?

A) Oxygen

B) Sulphur

C) Carbon

D) Silicon

2 / 12

2) Which of the following relationship is INCORRECT regarding relative reactivity of halogens for displacement reactions?

A) F2 > Cl2

B) Br2 > I2

C) Cl2 > Br2

D) Br2 > F2

3 / 12

3) Reduction of propyl chloride mainly produces:

A) Propene

B) Propyne

C) Methane

D) Propane

4 / 12

4) A reaction that does not go to completion is called:

A) Irreversible

B) Reversible

C) Endothermic

D) Exothermic

5 / 12

5) In the given reaction 2Na + Cl2 → 2NaCl . Sodium changes its oxidation state from 0 to +1. It is the process of:

A) Reduction

B) Addition

C) Oxidation

D) Elimination

6 / 12

6) which state of matter represented by air?

A) liquid

B) plasma

C) gas

D) Solid

7 / 12

7) Which factor increases water scarcity in Pakistan?

A) Cloud formation

B) Population growth

C) Soil erosion

D) Wind speed

8 / 12

8) The general formula of Carboxylic acids is:

A) Cn H2n+2 COOH

B) Cn H2n COOH

C) Cn H2n O2

D) Cn H2n+1 COOH

9 / 12

9) When a base reacts with an ammonium salt, it produces:

A) Hydrogen

B) Oxygen

C) Ammonia

D) Carbondioxide

10 / 12

10) Fish is a good source of :

A) Carbohydrates

B) Glucose

C) Protein

D) Sugar

11 / 12

11) The change on an ion depends on the number of:

A) Valence electrons

B) Atomic mass

C) Protons

D) Neutrons

12 / 12

12) The percentage of oxygen in clean, dry air is about :

A) 78 %

B) 21 %

C) 92 %

D) 50 %

Your score is

FBISE-2026-1st Annual (Evening) Paper Objectives

FBISE-9th-2026-1st Annual-Evening Paper Objectives

Total 12 MCQs

Evaluate your concepts

Boost your confidence for final board exams

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1 / 12

1) For a reversible reaction, why might the reaction not to completion?

A) Energy is not involved

B) Products never form

C) Backward reaction occurs simultaneously

D) Forward reaction is faster than backward

2 / 12

2) An element in Group I-A forms ions with charge :

A) +2

B) -2

C) -1

D) +1

3 / 12

3) Chemistry mainly deals with the study of :

A) Historical events

B) Living organisms

C) Matter and its interactions

D) Planets and its stars

4 / 12

4) The sum of oxidation numbers of all atoms in a sulfate ion (SO4-2) must be:

A) -1

B) 0

C) -2

D) +2

5 / 12

5) An alkane is most likely to undergo :

A) Addition reaction

B) Dehydration reaction

C) Substitution reaction

D) Neutralization reaction

6 / 12

6) Which trend is observed down the group in group I-A elements ?

A) Density increases

B) All become gases

C) Reactivity decreases

D) melting point increases

7 / 12

7) Dissolving ammonium nitrate in water causes the container to feel cold. This shows the process is:

A) Endothermic

B) Combustion

C) Neutralization

D) Exothermic

8 / 12

8) Sulphur dioxide (SO2) is released into the air during:

A) Combustion of fossil fuels containing sulfur compounds

B) Melting of ice glaciers

C) Rusting of iron industry

D) Use of catalytic converters in cars and vehicle

9 / 12

9) Which reaction products correctly show what happens when an acid reacts with a metal carbonate:

A) Salt + N2 + H2O

B) Salt + H2O +NH3

C) Salt + CO2 + H2O

D) Salt only

10 / 12

10) Which of the following can have more than one structural formula?

A) C4H8

B) C2H6

C) C3H8

D) CH4

11 / 12

11) Avogadro’s constant represents the number of molecules in:

A) 14 g of N2

B) 0.1 g of H2

C) 44 g of CO2

D) 10 g of H2O

12 / 12

12) The approximate percentage of nitrogen (N2) in clean, dry air is:

A) 78 %

B) 90 %

C) 10 %

D) 21 %

Your score is

FBISE-2026-1st Annual (Morning )Paper Objectives

FBISE-9th-2026-1st Annual-Morning Paper Objectives

Total 12 MCQs

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1 / 12

1) Which symbol shows a reversible reaction?

A) ↔

B) =

C) ⇌

D) →

2 / 12

2) Which substance in natural water is useful for aquatic life?

A) Sewage

B) Dissolved oxygen

C) Dissolved plastic

D) Dissolved nitrates

3 / 12

3) Which compound is formed by Al+3 and O-2?

A) AlO

B) Al2O2

C) Al2O

D) Al2O3

4 / 12

4) Which reaction best shows the property of a base?

A) Base + water → acid

B) Base → ions only

C) Base + metal → salt

D) Base + acid → salt + water

5 / 12

5) Substitution reactions commonly occur in:

A) Alkenes

B) Aldehydes

C) Alkanes

D) Alkynes

6 / 12

6) Which part of the atoms contains protons and neutrons?

A) Orbits

B) Nucleus

C) Shells

D) Electron cloud

7 / 12

7) The period number of an element depends on the number of:

A) Neutrons

B) Occupied shells

C) Eelectrons

D) Protons

8 / 12

8) Which type of compounds generally have low boiling points?

A) Metallic compounds

B) covalent compounds

C) Ionic compounds

D) Network solids

9 / 12

9) Carbon monoxide and particulates are mainly produced by:

A) Evaporation

B) Plant respiration

C) Incomplete combustion

D) Complete combustion

10 / 12

10) Sulphur contributes to acid rain mainly by forming:

A) HCl

B) HNO3

C) H2CO3

D) H2SO4

11 / 12

11) Which compound is an alkane?

A) C3H6

B) C2H2

C) C4H10

D) C2H4

12 / 12

12) The net ionic equation for forming silver chloride is:

A) (Na+) + (Cl-) → NaCl

B) Ag(s) + Cl(g) → AgCl(s)

C) Ag+(aq) + Cl-(aq) → AgCl(s)

D) AgNO3 + NaCl → AgCl + NaNO3

Your score is

FBISE-2025-2nd Annual Paper Objective

148

FBISE-9th-2025-2nd Annual-Objectives

Total 12 MCQs

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1 / 12

1) Number of atoms in 2 moles of O2 are:

A) 2.0 x 10^23

B) 2.41 x 10^24

C) 3.01 x 10^23

D) 6.022 x 10^23

2 / 12

2) Identify the reducing agent in given reaction.

Fe2O3 + 3CO → 2Fe + 3CO2

A) Fe

B) CO

C) Fe2O3

D) CO2

3 / 12

3) Electrons in higher energy energy levels are:

A) Far from nucleus

B) Closer to nucleus

C) Less energetics

D) Stable

4 / 12

4) Catalytic converters help in controlling the emission of:

A) Cl2

B) N2O2

C) He

D) CO, NO

5 / 12

5) One of the main source of protein is:

A) water

B) Sugar

C) oil

D) Meat

6 / 12

6) The elements of …………………. have one electron in their outer shell.

A) Group VII

B) Group II

C) Group III

D) Group I

7 / 12

7) The functional group in amines is

A) -NH2

B) -COOH

C) -CHO

D) -OH

8 / 12

8) Which of the following is a saturated hydrocarbon?

A) CH≡CH

B) CH3-CH3

C) CH2=CH2

D) CH2=CH-Cl

9 / 12

9) Most compressible state of matter is:

A) Gas

B) Plasma

C) Liquid

D) Solid

10 / 12

10) What type of bond is formed when two atoms share one or more pair of electrons?

A) Ionic bond

B) Hydrogen bond

C) Covalent bond

D) Metallic bond

11 / 12

11) Study of chemical changes that occur in living organisms is done in?

A) Physical Chemistry

B) Inorganic Chemistry

C) Biochemistry

D) Analytical chemistry

12 / 12

12) Which ion is usually formed by chlorine?

A) Cl+

B) Cl-2

C) Cl-2

D) Cl-

Your score is

FBISE-2025-1st Annual-Hard Paper Objective

FBISE-9th-2025-Hard Paper Objectives(1st Annual)

Total 12 MCQs

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1 / 12

1) Correct reagent for the hydrogenation of alkenes and alkynes is:

A) Ni, 200-300 °C

B) Zn

C) Zn + H2SO4

D) Al, 1000 °C

2 / 12

2) The given element belongs to which period?

A) 2

B) 3

C) 4

D) 1

3 / 12

3) Identify the compound that is unsaturated :

A) CH4

B) CH3-CH3

C) CH≡CH

D) CH3-OH

4 / 12

4) Number of protons in Br :

A) 80

B) 35

C) 25

D) 45

5 / 12

5) Number of moles in 64 g Oxygen (O2) is:

A) 2

B) 3

C) 1

D) 4

6 / 12

6) Identify the covalent compound.

A) NaCl

B) CH4

C) NaF

D) CaO

7 / 12

7) The oxidation number of Ca+2 is:

A) 0

B) +2

C) -2

D) -1

8 / 12

8) General formula of alcohol is :

A) RCOR

B) RCHO

C) ROR

D) R-OH

9 / 12

9) Which acid disintegrate marble buildings by forming acid rain:

A) CaC2O4

B) CaCO3

C) Ca(NO3)2

D) H2SO4

10 / 12

10) Moving left to right in a period ……………………………… decreases in periodic table.

A) Electron affinity

B) Ionization energy

C) Atomic radius

D) Electronegativity

11 / 12

11) In which state of matter do particles have the least compressibility?

A) Liquid

B) Plasma

C) Solid

D) Gas

12 / 12

12) Chemical composition of earth, rocks and minerals are studied in:

A) Nuclear Chemistry

B) Organic chemistry

C) Physical Chemistry

D) Geo chemistry

Your score is

FBISE-2025-1st Annual-Local Paper Objective

FBISE-9th-2025-Local Paper Objectives(1st Annual)

Total 12 MCQs

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1 / 12

1) Which acid disintegrates marble buildings by forming acid rain?

A) H2SO4

B) Ca(NO3)2

C) CaCO3

D) CaC2O4

2 / 12

2) In the formation of NaCl, Sodium atom losses ……………….. electrons?

A) 4

B) 2

C) 3

D) 1

3 / 12

3) Measuring the concentration of particular solution through titration is related with:

A) Geochemistry

B) Organic chemistry

C) Analytical chemistry

D) Astrochemistry

4 / 12

4) Mass of 4 moles of hydrogen gas (H2) is:

A) 2 g

B) 8 g

C) 4 g

D) 1 g

5 / 12

5) Identify the unsaturated hydrocarbons:

A) CH3-CH2-CH3

B) CH4

C) CH3-CH3

D) CH2=CH2

6 / 12

6) In which state of matter do particles have least compressibility?

A) Liquid

B) Plasma

C) Solid

D) Gas

7 / 12

7) Which element has greater atomic radius?

A) K

B) Li

C) Rb

D) Na

8 / 12

8) The oxidation number of Al+3 is:

A) +1

B) 0

C) -3

D) +3

9 / 12

9) Correct temperature required to break larger hydrocarbon into smaller hydrocarbons is:

A) 450-750 °C

B) 170 °C

C) 200-250 °C

D) 2000 °C

10 / 12

10) The given element belongs to group:

A) VIII A

B) III A

C) VII A

D) I A

11 / 12

11) General formula of carboxylic acid is:

A) RCOOH

B) RCOR

C) ROR

D) RCHO

12 / 12

12) Atomic number of the following element is:

A) 13

B) 56

C) 30

D) 26

Your score is

FBISE-2025-1st Annual-Old syllabus Paper Objective

FBISE-9th-2025-Old Syllabus Objectives(1st Annual)

Total 12 MCQs

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1 / 12

1) Predict the group and period of an element having electronic configuration of 3s2, 3p4.

A) Period=4th, Group=V-A

B) Period=3rd, Group=IV-A

C) Period=6th, Group=III-A

D) Period=3rd, Group=VI-A

2 / 12

2) Number of molecules in two moles of water is:

A) 1.204 x 10^24

B) 1.806 x 10^24

C) 1.084 x 10^25

D) 6.022 x 10^23

3 / 12

3) The value of Avogadro’s number is:

A) 6.022 x 10^23

B) 6.022 x 10^19

C) 6.022 x 10^21

D) 6.022 x 10^25

4 / 12

4) 10 g sugar in 100 g water is an example of:

A) Colloid

B) Aqueous solution

C) suspension

D) Solvent

5 / 12

5) Amalgam used by dentist is an example of:

A) liquid in liquid

B) solid in solid

C) liquid in solid

D) solid in liquid

6 / 12

6) At a high peak water shall boil at:

A) 0 °C

B) < 100 °C

C) > 100 °C

D) 100 °C

7 / 12

7) The isotope used to determine the path of carbon in photosynthesis is:

A) C-14

B) Cu-14

C) Cl-14

D) Ca-14

8 / 12

8) Recognize the ionic bond:

A) HCl

B) KCl

C) CCl4

D) CH4

9 / 12

9) A charged ion formed by an element “A” having electronic configuration 1s2, 2s2,2p6 is:

A) A-3

B) A+3

C) A-2

D) A+2

10 / 12

10) Identify the molecular ion:

A) O2-1

B) N-3

C) O-2

D) H+1

11 / 12

11) Which of the following list contains only elements?

A) Sulphur, Carbon

B) Hydrogen, Oxygen,salt

C) Air, Water, Fire

D) Water, Oxygen

12 / 12

12) Oxidation state of Mn in MnO4- 1 is?

A) 9

B) 6

C) 8

D) 7

Your score is

FBISE-NBF-Chapter#01

133

FBISE-NBF-9th-Chapter-1-Objectives

Total 10 MCQs

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1 / 10

1) The study of the interaction between drugs and biological targets, as well as the development of new medicinal agents:

A) Environmental chemistry

B) Medicinal chemistry

C) Inorganic chemistry

D) Organic chemistry

2 / 10

2) Which branch of chemistry helps to protect water that has been poisoned by soil?

A) Environmental chemistry

B) Geochemistry

C) Organic chemistry

D) Inorganic chemistry

3 / 10

3) Which area of chemistry improves to gauge the behavior of pollutants and develop techniques for pollution control?

A) Analyical chemistry

B) Environmental chemistry

C) Organic chemistry

D) Geochemistry

4 / 10

4) To identify the concentration of a particular solution through titration is an application of:

A) Astrochemistry

B) Organic chemistry

C) Analytical chemistry

D) Geochemistry

5 / 10

5) The branch of science that helps to understand chemical products and processes that reduce the use of hazardous substances:

A) Analytical chemistry

B) Physical chemistry

C) Astrochemistry

D) Green chemistry

6 / 10

6) The branch of chemistry that is concerned with the large-scale production of chemical substances is:

A) Physical chemistry

B) Environmental chemistry

C) Industrial chemistry

D) Inorganic chemistry

7 / 10

7) The batteries in our vehicles are built on the principle of electrochemistry is a application of:

A) Physical chemistry

B) Organic chemistry

C) Astrochemistry

D) Analytical chemistry

8 / 10

8) The branch of chemistry that helps to synthesize new medicines:

A) Physical

B) Inorganic

C) Environmental

D) Organic

9 / 10

9) The branch of chemistry that focuses on the study of polymers, their types, properties, uses is called:

A) Industrial chemistry

B) Astrochemistry

C) Organic chemistry

D) Polymer chemistry

10 / 10

10) Which branch of chemistry is the study of elements and their compounds except for organic compounds?

A) Organic chemistry

B) Physical chemistry

C) Geochemistry

D) Inorganic chemistry

Your score is

FBISE-NBF-Chapter#02

115

FBISE-NBF-9th-Chapter-2-Objectives

Total 5 MCQs

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1 / 5

1) Anything that has mass and occupies space is called:

A) Solid

B) Gas

C) Liquid

D) Matter

2 / 5

2) Macroscopic properties are properties that can be visualized by:

A) Electron microscope

B) Telescope

C) Microscope

D) The nacked aye

3 / 5

3) A substance formed when two or more different elements combine chemically:

A) Element

B) Compound

C) Solution

D) Atom

4 / 5

4) Following are states of matter:

A) Liquid

B) Gas

C) All of these

D) Solid

5 / 5

5) Matter can be described by both its:

A) Physical properties and chemical properties

B) None of these

C) Physical properties

D) Chemical properties

Your score is

FBISE-NBF-Chapter#03

FBISE-NBF-9th-Chapter-3-Objectives

Total 8 MCQs

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1 / 8

1) Which isotope is used in nuclear reactors?

A) All of these

B) U-238

C) U-234

D) U-235

2 / 8

2) Which of the following statement is not correct about isotopes?

A) they have same chemical properties

B) they have same physical properties

C) they have same number of protons

D) they have same atomic number

3 / 8

3) M-Shell has sub-shells:

A) 2s, 2p

B) 1s, 2s

C) 3s, 3p, 3d

D) 1s, 2s, 3s

4 / 8

4) Number of neutrons in the given element are:

A) 15

B) 13

C) 27

D) 14

5 / 8

5) Which isotope is commonly used to irradiate cancer cells?

A) Iodine-123

B) Cobalt-60

C) Iodine-131

D) Carbon-14

6 / 8

6) A sub-shell that can accommodate 6 electrons is:

A) s

B) d

C) p

D) f

7 / 8

7) Chlorine has two isotopes, both of which have:

A) Same mass number

B) Same number of neutrons

C) Different number of protons

D) Same number of electrons

8 / 8

8) Na has electronic configuration:

A) 1s2, 2s2, 2p7

B) 1s2, 2s2, 2p6, 3s1

C) 1s2, 2s2, 3s1

D) 1s2, 2s2, 2p5, 3s2

Your score is

FBISE-NBF-Chapter#04

FBISE-NBF-9th-Chapter-4-Objectives

Total 9 MCQs

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1 / 9

1) Which of the following elements you expect to have greater shielding effect?

A) K

B) Na

C) Rb

D) LI

2 / 9

2) Valence shell electronic configuration of an element M (atomic no.14) is:

A) 2s2, 2p3

B) 2s2, 2p2

C) 2s2, 2p1

D) 3s2, 3p2

3 / 9

3) Main group elements are grouped in ………………….. groups.

A) 6

B) 8

C) 10

D) 7

4 / 9

4) As you move from right to left across a period, which of the following does not increase?

A) ionization energy

B) Nuclear charge

C) electron affinity

D) Shielding effect

5 / 9

5) Which of the following elements belongs to VIII A?

A) Mg

B) Br

C) Na

D) Xe

6 / 9

6) Which of the following groups contain alkaline earth metals?

A) VII A

B) VIII

C) I A

D) II A

7 / 9

7) Number of periods in the periodic table are:

A) 5

B) 16

C) 8

D) 7

8 / 9

8) All the elements of group II A are less reactive than alkali metals. This is because these elements have:

A) relatively greater atomic sizes

B) similar electronic configuration

C) decreased nuclear charge

D) high ionization energy

9 / 9

9) Period number of Al is:

A) 4

B) 3

C) 2

D) 1

Your score is

FBISE-NBF-Chapter#05

FBISE-NBF-9th-Chapter-5-Objectives

Total 9 MCQs

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1 / 9

1) Which of the following atoms obey duplet rule?

A) F2

B) O2

C) H2

D) N2

2 / 9

2) Phosphorous belongs to third period of group V A.How many electrons it needs to complete its valence shell.

A) 4

B) 2

C) 3

D) 5

3 / 9

3) Which of the following atoms will form cation:

A) Atomic number=20

B) Atomic number=15

C) Atomic number=18

D) Atomic number=17

4 / 9

4) Silicon belongs to group IV-A. It has ……………….. electrons in the valence shell.

A) 2

B) 4

C) 3

D) 6

5 / 9

5) Which of the following atoms will not form cation or anion.

A) Atomic no.17

B) Atomic no. 18

C) Atomic no. 16

D) Atomic no. 19

6 / 9

6) In the formation of AlF3, aluminium atom loses ………………….electrons.

A) 1

B) 3

C) 4

D) 2

7 / 9

7) Which of the following is not true about the formation of Na2S:

A) sodium forms cation

B) sulphur forms anion

C) Each sulphur atom gains one electron

D) Each sodium atom loses one electron

8 / 9

8) Identify the covalent compound.

A) H2O

B) MgO

C) NaCl

D) KF

9 / 9

9) Which of the following atoms will form an ion of charge-2?

A) c

B) a

C) d

D) b

Your score is

FBISE-NBF-Chapter#06

FBISE-NBF-9th-Chapter-6-Objectives

Total 7 MCQs

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1 / 7

1) How many moles of molecules are there in 16 g of Oxygen.

A) 0.05

B) 1

C) 0.1

D) 0.5

2 / 7

2) A compound with chemical formula Na2CX3 has formula mass 106 amu. Atomic mass of the element X is:

A) 12

B) 23

C) 16

D) 106

3 / 7

3) What is the mass of carbon present in 44 g of carbon dioxide?

A) 6 g

B) 24 g

C) 12 g

D) 44 g

4 / 7

4) If one mole of carbon contains x atoms, what is the number of atoms contained in 12 g of Mg:

A) x

B) 0.5 x

C) 2x

D) 1.5 x

5 / 7

5) What is the formula mass of CuSO4.5H2O. (Atomic masses: Cu=63.5, S=32, O=16, H=1)

A) 249.5

B) 185.5

C) 149.5

D) 159.5

6 / 7

6) Which term is the same for one mole of oxygen and one mole of water?

A) molecules

B) atoms

C) mass

D) Volume

7 / 7

7) What is the mass of 4 moles of hydrogen gas?

A) 4.032 g

B) 1.008 g

C) 8.064 g

D) 1 g

Your score is

FBISE-NBF-Chapter#07

FBISE-NBF-9th-Chapter-7-Objectives

Total 5 MCQs

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1 / 5

1) The oxidation state of Cr in K2Cr2O7 is:

A) +12

B) +6

C) -6

D) +3

2 / 5

2) Which of the following elements in the given reaction is reduced?

Zn + H2 → Zn + H2O

A) H2

B) O

C) Zn

D) ZnO

3 / 5

3) In which of the following changes, the nitrogen atom is reduced?

A) N2 to NO2

B) N2 to NO

C) N2 to NH3

D) N2 to HNO3

4 / 5

4) Consider the following reaction:

H2S + Cl2 → 2HCl + S

In this reaction H2S behaves as:

A) Oxidizing agent

B) Electrolyte

C) Reducing agent

D) Catalyst

5 / 5

5) Which of the following changes reaction is an example of oxidation?

A) Chlorine molecule to chloride ion

B) Iron (III) ion to iron (II) ion

C) Silver atoms to silver (I) ion

D) Oxygen molecule to oxide ion

Your score is

FBISE-NBF-Chapter#08

FBISE-NBF-9th-Chapter-8-Objectives

Total 5 MCQs

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1 / 5

1) Which is not released in an aerobic respiration?

A) carbon dioxide

B) Lactic acid

C) water

D) energy

2 / 5

2) A catalyst increases the rate of a chemical reaction by:

A) increasing activation energy

B) Decreasing the enthalpy of reaction

C) increasing the enthalpy of reaction

D) None of these

3 / 5

3) If the ΔH value is negative than reaction will be:

A) Endothermic

B) May or may not be Exothermic or endothermic

C) None of these

D) Exothermic

4 / 5

4) Activation energy of a chemical reaction must be ………………….. the average kinetic energy of reacting molecules:

A) equal to

B) None of these

C) Lowe than

D) greater than

5 / 5

5) All chemical reactions involve:

A) All of these

B) Ctalysts

C) Energy changes

D) Enzymes

Your score is

FBISE-NBF-Chapter#09

FBISE-NBF-9th-Chapter-9-Objectives

Total 5 MCQs

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1 / 5

1) In an irreversible reaction, equilibrium is:

A) never established

B) established slowly

C) established quickly

D) established when reaction stops

2 / 5

2) Which of the following does not happen, when a system is at equilibrium state?

A) Forward and reverse reactions stop

B) concentration of reactants and products stop changing

C) reaction continues to oocur in both the directions

D) Forward and reverse rates become equal

3 / 5

3) When a mixture of H2 and I2 is sealed in a flask and temperature is kept at 25 oC, following equilibrium is established.

H2 + I2 ⇌ 2HI

Which substance or substances will be present in the eqillibrium mixture?

A) H2, I2 and HI

B) H2 or I2

C) H2 only

D) HI only

4 / 5

4) Concentration of reactants and products at equilibrium remains unchanged, if:

A) all of the above are observed

B) temperature of the reaction is not changed

C) pressure or volume of the system is not changed

D) Concentration of any reactant or product is not changed

5 / 5

5) Which is true about the equilibrium state?

A) Both forward and reverse reactions continue at the same rate

B) The reverse reaction stops

C) The forward reaction stops

D) Both forward and reverse reactions stop

Your score is

Practice Test # 01

9th-Practice Test # 01

Total 12 MCQs

Evaluate your concepts

Boost your confidence for final board exams

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1 / 12

1) Following are states of matter:

A) Gas

B) Liquid

C) Solid

D) All of these

2 / 12

2) Macroscopic properties are properties that can be visualized by:

A) electron microscope

B) the nacked eye

C) microscope

D) telescope

3 / 12

3) To identify the concentration of a particular solution through titration is an application of:

A) Geochemistry

B) Astrochemistry

C) Analytical chemistry

D) Organic chemistry

4 / 12

4) Which branch of chemistry is the study of elements and their compounds except for organic compounds?

A) Physical chemistry

B) Inorganic chemistry

C) Geochemistry

D) Organic chemistry

5 / 12

5) The branch of science that helps to understand chemical products and processes that reduce the use of hazardous substances:

A) Astrochemistry

B) Analytical chemistry

C) Green chemistry

D) Physical chemistry

6 / 12

6) Matter can be described by both its:

A) Colligative properties

B) Physical properties and chemical properties

C) Physical chemistry

D) Chemical properties

7 / 12

7) Anything that has mass and occupies space is called ……….?

A) Gas

B) Liquid

C) Matter

D) Solid

8 / 12

8) A substance formed when two or more different atoms combine chemically:

A) molecule

B) solution

C) mixture

D) compound

9 / 12

9) Which area of chemistry improves to gauge the behavior of pollutants and develop techniques for pollution control?

A) Geochemistry

B) Environmental chemistry

C) Organic chemistry

D) Analytical chemistry

10 / 12

10) Which branch of chemistry helps to protect water that has been poisoned by soil?

A) Geochemistry

B) Environmental chemistry

C) Organic chemistry

D) Inorganic chemistry

11 / 12

11) The batteries in our vehicles are built on the principle of electrochemistry. It is the application of:

A) Physical chemistry

B) Analytical chemistry

C) Astrochemistry

D) Organic chemistry

12 / 12

12) The branch of chemistry that helps to treat diseases, organic chemists synthesize new medicines:

A) Environmental

B) Organic

C) Physical

D) Inorganic

Your score is

Practice Test # 02

9th-Practice Test # 02

Total 12 MCQs

Evaluate your concepts

Boost your confidence for final board exams

Keep practicing

1 / 12

1) Which isotope is commonly used to irradiate cancer cell?

A) Carbon-14

B) Iodine-123

C) Cobalt-60

D) Iodine-131

2 / 12

2) Which of the following statement is not correct about isotopes?

A) they have same number of protons

B) They have same atomic number

C) they have same chemical properties

D) they have same physical properties

3 / 12

3) An electric field exerts a force on charged particles. Predict the path of an alpha particle (Positively charged) and a beta particle (negatively charged) in a uniform electric field.

A) The alpha particle will move towards the negative electrode, and the beta particle will move towwards the positive electrode

B) Both particles mve towards the negative electrode

C) The particles will not be affected by the electric field

D) Both particles mve towards the positive electrode

4 / 12

4) M-shell has sub-shells:

A) 2s, 2p

B) 3s, 3p, 3d

C) 1s, 2s

D) 1s, 2s, 3s

5 / 12

5) The given element has electronic configuration:

A) 1s2, 2s2, 3s1

B) 1s2, 2s2, 2p5, 3s2

C) 1s2, 2s2, 2p7

D) 1s2, 2s2, 2p6, 3s1

6 / 12

6) A sub-shell that can accommodate 6 electrons is:

A) s

B) p

C) d

D) f

7 / 12

7) The mass of an atom is primarily concentrated in its:

A) Outermost energy level where electrons reside

B) Electrons, due to their negative charge

C) It is evenly distributed throughout the entire atom

D) Nucleus composed of protons and neutrons

8 / 12

8) The periodic table is organized based on the unique number of protons in an element’s nucleus. This number is also known as the:

A) Necleon number

B) Proton number (Atomic number)

C) Relative atomic mass

D) Isotope number

9 / 12

9) Chlorine has two isotopes, both of which have:

A) Same number of protons

B) Same number of neutrons

C) same mass number

D) same number of electrons

10 / 12

10) Which isotope is used in nuclear reactors?

A) U-235

B) U-238

C) All of these

D) U-234

11 / 12

11) When comparing the relative sizes of protons, neutrons and electrons, which statement is true?

A) Neutrons are significantly larger than protons and electrons

B) Electrons are much smaller than both protons and neutrons

C) Protons and neutrons have nearly identicle sizes and masses

D) Electrons are the largest particles due to their negative charge

12 / 12

12) Number of neutrons in the given element are:

A) 15

B) 14

C) 27

D) 13

Your score is

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Learn Chemistry, The Easy Way

9th Chemistry