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) which state of matter represented by air?

A) liquid

B) plasma

C) gas

D) Solid

2 / 12

2) Diamond and graphite are allotropic forms of?

A) Oxygen

B) Sulphur

C) Silicon

D) Carbon

3 / 12

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

A) Br2 > I2

B) F2 > Cl2

C) Cl2 > Br2

D) Br2 > F2

4 / 12

4) The general formula of Carboxylic acids is:

A) Cn H2n+1 COOH

B) Cn H2n COOH

C) Cn H2n+2 COOH

D) Cn H2n O2

5 / 12

5) Which factor increases water scarcity in Pakistan?

A) Wind speed

B) Soil erosion

C) Population growth

D) Cloud formation

6 / 12

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

A) 78 %

B) 92 %

C) 21 %

D) 50 %

7 / 12

7) Fish is a good source of :

A) Glucose

B) Carbohydrates

C) Sugar

D) Protein

8 / 12

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

A) Reversible

B) Exothermic

C) Endothermic

D) Irreversible

9 / 12

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

A) Protons

B) Valence electrons

C) Atomic mass

D) Neutrons

10 / 12

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

A) Ammonia

B) Hydrogen

C) Oxygen

D) Carbondioxide

11 / 12

11) Reduction of propyl chloride mainly produces:

A) Methane

B) Propyne

C) Propene

D) Propane

12 / 12

12) 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) Elimination

D) Oxidation

Your score is

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

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

Total 12 MCQs

Evaluate your concepts

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1 / 12

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

A) Exothermic

B) Combustion

C) Endothermic

D) Neutralization

2 / 12

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

A) Forward reaction is faster than backward

B) Backward reaction occurs simultaneously

C) Products never form

D) Energy is not involved

3 / 12

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

A) -1

B) +2

C) -2

D) 0

4 / 12

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

A) All become gases

B) melting point increases

C) Density increases

D) Reactivity decreases

5 / 12

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

A) 0.1 g of H2

B) 14 g of N2

C) 44 g of CO2

D) 10 g of H2O

6 / 12

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

A) C2H6

B) C3H8

C) CH4

D) C4H8

7 / 12

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

A) -1

B) +2

C) +1

D) -2

8 / 12

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

A) Use of catalytic converters in cars and vehicle

B) Melting of ice glaciers

C) Combustion of fossil fuels containing sulfur compounds

D) Rusting of iron industry

9 / 12

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

A) Salt + N2 + H2O

B) Salt + CO2 + H2O

C) Salt + H2O +NH3

D) Salt only

10 / 12

10) An alkane is most likely to undergo :

A) Neutralization reaction

B) Addition reaction

C) Dehydration reaction

D) Substitution reaction

11 / 12

11) Chemistry mainly deals with the study of :

A) Matter and its interactions

B) Living organisms

C) Planets and its stars

D) Historical events

12 / 12

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

A) 10 %

B) 21 %

C) 90 %

D) 78 %

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

A) Al2O2

B) Al2O

C) AlO

D) Al2O3

3 / 12

3) Substitution reactions commonly occur in:

A) Aldehydes

B) Alkynes

C) Alkanes

D) Alkenes

4 / 12

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

A) Dissolved nitrates

B) Dissolved plastic

C) Dissolved oxygen

D) Sewage

5 / 12

5) 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

6 / 12

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

A) Electron cloud

B) Orbits

C) Nucleus

D) Shells

7 / 12

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

A) Eelectrons

B) Occupied shells

C) Neutrons

D) Protons

8 / 12

8) Which compound is an alkane?

A) C2H4

B) C4H10

C) C3H6

D) C2H2

9 / 12

9) Carbon monoxide and particulates are mainly produced by:

A) Evaporation

B) Incomplete combustion

C) Plant respiration

D) Complete combustion

10 / 12

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

A) Base + water → acid

B) Base + acid → salt + water

C) Base → ions only

D) Base + metal → salt

11 / 12

11) Sulphur contributes to acid rain mainly by forming:

A) HCl

B) H2CO3

C) HNO3

D) H2SO4

12 / 12

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

A) covalent compounds

B) Ionic compounds

C) Network solids

D) Metallic compounds

Your score is

FBISE-2025-2nd Annual Paper Objective

149

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

Total 12 MCQs

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1 / 12

1) Which ion is usually formed by chlorine?

A) Cl-

B) Cl+

C) Cl-2

D) Cl-2

2 / 12

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

A) Covalent bond

B) Hydrogen bond

C) Metallic bond

D) Ionic bond

3 / 12

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

A) Physical Chemistry

B) Analytical chemistry

C) Inorganic Chemistry

D) Biochemistry

4 / 12

4) One of the main source of protein is:

A) oil

B) water

C) Sugar

D) Meat

5 / 12

5) Electrons in higher energy energy levels are:

A) Far from nucleus

B) Less energetics

C) Closer to nucleus

D) Stable

6 / 12

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

A) 2.41 x 10^24

B) 2.0 x 10^23

C) 6.022 x 10^23

D) 3.01 x 10^23

7 / 12

7) The functional group in amines is

A) -OH

B) -CHO

C) -NH2

D) -COOH

8 / 12

8) Which of the following is a saturated hydrocarbon?

A) CH3-CH3

B) CH2=CH-Cl

C) CH2=CH2

D) CH≡CH

9 / 12

9) Catalytic converters help in controlling the emission of:

A) He

B) N2O2

C) Cl2

D) CO, NO

10 / 12

10) Most compressible state of matter is:

A) Liquid

B) Gas

C) Plasma

D) Solid

11 / 12

11) Identify the reducing agent in given reaction.

Fe2O3 + 3CO → 2Fe + 3CO2

A) Fe

B) CO2

C) CO

D) Fe2O3

12 / 12

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

A) Group I

B) Group III

C) Group II

D) Group VII

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

A) Solid

B) Liquid

C) Gas

D) Plasma

2 / 12

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

A) Ionization energy

B) Electron affinity

C) Electronegativity

D) Atomic radius

3 / 12

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

A) Physical Chemistry

B) Nuclear Chemistry

C) Organic chemistry

D) Geo chemistry

4 / 12

4) The given element belongs to which period?

A) 2

B) 4

C) 1

D) 3

5 / 12

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

A) 4

B) 1

C) 3

D) 2

6 / 12

6) Identify the covalent compound.

A) CaO

B) NaCl

C) CH4

D) NaF

7 / 12

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

A) Al, 1000 °C

B) Ni, 200-300 °C

C) Zn

D) Zn + H2SO4

8 / 12

8) The oxidation number of Ca+2 is:

A) -1

B) -2

C) 0

D) +2

9 / 12

9) General formula of alcohol is :

A) RCHO

B) RCOR

C) ROR

D) R-OH

10 / 12

10) Identify the compound that is unsaturated :

A) CH3-CH3

B) CH≡CH

C) CH4

D) CH3-OH

11 / 12

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

A) H2SO4

B) CaCO3

C) Ca(NO3)2

D) CaC2O4

12 / 12

12) Number of protons in Br :

A) 45

B) 25

C) 35

D) 80

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

A) 450-750 °C

B) 2000 °C

C) 200-250 °C

D) 170 °C

2 / 12

2) Which element has greater atomic radius?

A) Rb

B) Na

C) Li

D) K

3 / 12

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

A) 4 g

B) 2 g

C) 8 g

D) 1 g

4 / 12

4) Identify the unsaturated hydrocarbons:

A) CH4

B) CH3-CH3

C) CH3-CH2-CH3

D) CH2=CH2

5 / 12

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

A) 4

B) 1

C) 2

D) 3

6 / 12

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

A) Organic chemistry

B) Geochemistry

C) Astrochemistry

D) Analytical chemistry

7 / 12

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

A) Liquid

B) Plasma

C) Solid

D) Gas

8 / 12

8) The oxidation number of Al+3 is:

A) +3

B) -3

C) +1

D) 0

9 / 12

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

A) Ca(NO3)2

B) CaCO3

C) H2SO4

D) CaC2O4

10 / 12

10) Atomic number of the following element is:

A) 30

B) 26

C) 13

D) 56

11 / 12

11) The given element belongs to group:

A) I A

B) VIII A

C) VII A

D) III A

12 / 12

12) General formula of carboxylic acid is:

A) RCOR

B) RCOOH

C) ROR

D) RCHO

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) At a high peak water shall boil at:

A) > 100 °C

B) < 100 °C

C) 100 °C

D) 0 °C

2 / 12

2) Amalgam used by dentist is an example of:

A) liquid in liquid

B) liquid in solid

C) solid in liquid

D) solid in solid

3 / 12

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

A) 9

B) 7

C) 6

D) 8

4 / 12

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

A) A-3

B) A-2

C) A+3

D) A+2

5 / 12

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

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

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

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

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

6 / 12

6) Which of the following list contains only elements?

A) Sulphur, Carbon

B) Hydrogen, Oxygen,salt

C) Water, Oxygen

D) Air, Water, Fire

7 / 12

7) Recognize the ionic bond:

A) CH4

B) CCl4

C) HCl

D) KCl

8 / 12

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

A) C-14

B) Cl-14

C) Cu-14

D) Ca-14

9 / 12

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

A) 1.204 x 10^24

B) 1.084 x 10^25

C) 1.806 x 10^24

D) 6.022 x 10^23

10 / 12

10) Identify the molecular ion:

A) N-3

B) O-2

C) O2-1

D) H+1

11 / 12

11) The value of Avogadro’s number is:

A) 6.022 x 10^19

B) 6.022 x 10^21

C) 6.022 x 10^23

D) 6.022 x 10^25

12 / 12

12) 10 g sugar in 100 g water is an example of:

A) suspension

B) Colloid

C) Solvent

D) Aqueous solution

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) Medicinal chemistry

B) Inorganic chemistry

C) Environmental chemistry

D) Organic chemistry

2 / 10

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

A) Physical chemistry

B) Geochemistry

C) Organic chemistry

D) Inorganic chemistry

3 / 10

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

A) Organic chemistry

B) Astrochemistry

C) Polymer chemistry

D) Industrial chemistry

4 / 10

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

A) Analyical chemistry

B) Organic chemistry

C) Environmental chemistry

D) Geochemistry

5 / 10

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

A) Geochemistry

B) Organic chemistry

C) Astrochemistry

D) Analytical chemistry

6 / 10

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

A) Inorganic

B) Environmental

C) Physical

D) Organic

7 / 10

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

A) Environmental chemistry

B) Inorganic chemistry

C) Industrial chemistry

D) Physical chemistry

8 / 10

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

A) Astrochemistry

B) Green chemistry

C) Analytical chemistry

D) Physical chemistry

9 / 10

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

A) Organic chemistry

B) Geochemistry

C) Environmental chemistry

D) Inorganic chemistry

10 / 10

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

A) Analytical chemistry

B) Organic chemistry

C) Astrochemistry

D) Physical 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) Following are states of matter:

A) Solid

B) Gas

C) All of these

D) Liquid

2 / 5

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

A) Element

B) Atom

C) Solution

D) Compound

3 / 5

3) Matter can be described by both its:

A) Chemical properties

B) None of these

C) Physical properties and chemical properties

D) Physical properties

4 / 5

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

A) Electron microscope

B) The nacked aye

C) Telescope

D) Microscope

5 / 5

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

A) Liquid

B) Solid

C) Matter

D) Gas

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) U-235

B) All of these

C) U-238

D) U-234

2 / 8

2) M-Shell has sub-shells:

A) 3s, 3p, 3d

B) 2s, 2p

C) 1s, 2s

D) 1s, 2s, 3s

3 / 8

3) 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

4 / 8

4) Na has electronic configuration:

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

B) 1s2, 2s2, 2p7

C) 1s2, 2s2, 2p5, 3s2

D) 1s2, 2s2, 3s1

5 / 8

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

A) p

B) d

C) f

D) s

6 / 8

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

A) Iodine-131

B) Cobalt-60

C) Carbon-14

D) Iodine-123

7 / 8

7) Number of neutrons in the given element are:

A) 14

B) 15

C) 27

D) 13

8 / 8

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

A) Same number of neutrons

B) Different number of protons

C) Same number of electrons

D) Same mass number

Your score is

FBISE-NBF-Chapter#04

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

Total 9 MCQs

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1 / 9

1) Number of periods in the periodic table are:

A) 8

B) 5

C) 16

D) 7

2 / 9

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

A) ionization energy

B) electron affinity

C) Nuclear charge

D) Shielding effect

3 / 9

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

A) high ionization energy

B) relatively greater atomic sizes

C) similar electronic configuration

D) decreased nuclear charge

4 / 9

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

A) VII A

B) II A

C) VIII

D) I A

5 / 9

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

A) Mg

B) Na

C) Br

D) Xe

6 / 9

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

A) Na

B) Rb

C) LI

D) K

7 / 9

7) Period number of Al is:

A) 3

B) 2

C) 4

D) 1

8 / 9

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

A) 6

B) 10

C) 8

D) 7

9 / 9

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

A) 2s2, 2p1

B) 3s2, 3p2

C) 2s2, 2p2

D) 2s2, 2p3

Your score is

FBISE-NBF-Chapter#05

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

Total 9 MCQs

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1 / 9

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

A) 4

B) 3

C) 2

D) 6

2 / 9

2) Which of the following atoms will form cation:

A) Atomic number=17

B) Atomic number=18

C) Atomic number=15

D) Atomic number=20

3 / 9

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

A) 3

B) 1

C) 4

D) 2

4 / 9

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

A) 3

B) 4

C) 2

D) 5

5 / 9

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

A) b

B) d

C) a

D) c

6 / 9

6) Which of the following atoms obey duplet rule?

A) H2

B) F2

C) N2

D) O2

7 / 9

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

A) Each sulphur atom gains one electron

B) sodium forms cation

C) Each sodium atom loses one electron

D) sulphur forms anion

8 / 9

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

A) Atomic no. 19

B) Atomic no. 18

C) Atomic no.17

D) Atomic no. 16

9 / 9

9) Identify the covalent compound.

A) NaCl

B) H2O

C) MgO

D) KF

Your score is

FBISE-NBF-Chapter#06

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

Total 7 MCQs

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1 / 7

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

A) 2x

B) x

C) 1.5 x

D) 0.5 x

2 / 7

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

A) 1.008 g

B) 1 g

C) 4.032 g

D) 8.064 g

3 / 7

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

A) 159.5

B) 185.5

C) 149.5

D) 249.5

4 / 7

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

A) atoms

B) mass

C) molecules

D) Volume

5 / 7

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

A) 44 g

B) 6 g

C) 12 g

D) 24 g

6 / 7

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

A) 16

B) 12

C) 23

D) 106

7 / 7

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

A) 1

B) 0.1

C) 0.05

D) 0.5

Your score is

FBISE-NBF-Chapter#07

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

Total 5 MCQs

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1 / 5

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

A) N2 to NH3

B) N2 to NO

C) N2 to NO2

D) N2 to HNO3

2 / 5

2) Consider the following reaction:

H2S + Cl2 → 2HCl + S

In this reaction H2S behaves as:

A) Oxidizing agent

B) Electrolyte

C) Catalyst

D) Reducing agent

3 / 5

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

A) Silver atoms to silver (I) ion

B) Oxygen molecule to oxide ion

C) Chlorine molecule to chloride ion

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

4 / 5

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

Zn + H2 → Zn + H2O

A) O

B) ZnO

C) Zn

D) H2

5 / 5

5) The oxidation state of Cr in K2Cr2O7 is:

A) +3

B) +12

C) +6

D) -6

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) energy

C) Lactic acid

D) water

2 / 5

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

A) None of these

B) Endothermic

C) Exothermic

D) May or may not be Exothermic or endothermic

3 / 5

3) All chemical reactions involve:

A) Ctalysts

B) All of these

C) Energy changes

D) Enzymes

4 / 5

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

A) None of these

B) equal to

C) Lowe than

D) greater than

5 / 5

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

A) Decreasing the enthalpy of reaction

B) None of these

C) increasing the enthalpy of reaction

D) increasing activation energy

Your score is

FBISE-NBF-Chapter#09

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

Total 5 MCQs

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1 / 5

1) Which is true about the equilibrium state?

A) The forward reaction stops

B) Both forward and reverse reactions stop

C) The reverse reaction stops

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

2 / 5

2) 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 only

B) HI only

C) H2, I2 and HI

D) H2 or I2

3 / 5

3) 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) Forward and reverse rates become equal

D) reaction continues to oocur in both the directions

4 / 5

4) In an irreversible reaction, equilibrium is:

A) established when reaction stops

B) never established

C) established quickly

D) established slowly

5 / 5

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

A) pressure or volume of the system is not changed

B) Concentration of any reactant or product is not changed

C) all of the above are observed

D) temperature of the reaction is not changed

Your score is

Practice Test # 01

9th-Practice Test # 01

Total 12 MCQs

Evaluate your concepts

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1 / 12

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

A) Organic chemistry

B) Analytical chemistry

C) Physical chemistry

D) Astrochemistry

2 / 12

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

A) Organic

B) Physical

C) Inorganic

D) Environmental

3 / 12

3) Matter can be described by both its:

A) Chemical properties

B) Colligative properties

C) Physical chemistry

D) Physical properties and chemical properties

4 / 12

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

A) compound

B) solution

C) mixture

D) molecule

5 / 12

5) Following are states of matter:

A) Gas

B) All of these

C) Liquid

D) Solid

6 / 12

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

A) telescope

B) microscope

C) the nacked eye

D) electron microscope

7 / 12

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

A) Inorganic chemistry

B) Organic chemistry

C) Geochemistry

D) Environmental chemistry

8 / 12

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

A) Analytical chemistry

B) Green chemistry

C) Physical chemistry

D) Astrochemistry

9 / 12

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

A) Physical chemistry

B) Organic chemistry

C) Geochemistry

D) Inorganic chemistry

10 / 12

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

A) Gas

B) Solid

C) Liquid

D) Matter

11 / 12

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

A) Analytical chemistry

B) Geochemistry

C) Organic chemistry

D) Environmental chemistry

12 / 12

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

A) Geochemistry

B) Analytical chemistry

C) Astrochemistry

D) Organic chemistry

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) 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) Both particles mve towards the negative electrode

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

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

D) Both particles mve towards the positive electrode

2 / 12

2) 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) Proton number (Atomic number)

B) Isotope number

C) Relative atomic mass

D) Necleon number

3 / 12

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

A) Cobalt-60

B) Iodine-131

C) Carbon-14

D) Iodine-123

4 / 12

4) 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 the largest particles due to their negative charge

C) Electrons are much smaller than both protons and neutrons

D) Protons and neutrons have nearly identicle sizes and masses

5 / 12

5) Which isotope is used in nuclear reactors?

A) U-234

B) All of these

C) U-238

D) U-235

6 / 12

6) Number of neutrons in the given element are:

A) 14

B) 13

C) 27

D) 15

7 / 12

7) The given element has electronic configuration:

A) 1s2, 2s2, 2p5, 3s2

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

C) 1s2, 2s2, 2p7

D) 1s2, 2s2, 3s1

8 / 12

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

A) same number of electrons

B) Same number of neutrons

C) Same number of protons

D) same mass number

9 / 12

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

A) Outermost energy level where electrons reside

B) Nucleus composed of protons and neutrons

C) It is evenly distributed throughout the entire atom

D) Electrons, due to their negative charge

10 / 12

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

A) f

B) s

C) d

D) p

11 / 12

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

A) They have same atomic number

B) they have same physical properties

C) they have same number of protons

D) they have same chemical properties

12 / 12

12) M-shell has sub-shells:

A) 1s, 2s, 3s

B) 3s, 3p, 3d

C) 1s, 2s

D) 2s, 2p

Your score is

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Learn Chemistry, The Easy Way

9th Chemistry