Guess Paper Punjab Board 9th Class Chemistry
The branch of science in which we study various chemical compounds, their properties, reactions, and their use in everyday life is called chemistry. Chemistry is an important science subject for ninth-grade science students. For 9th-grade students, we created the 9th-grade chemistry assessment paper 2023 which is available here. These 9th-grade chemistry papers are very important for your board exam. 9th Class Chemistry Guess Papers 2023. We provide important guess papers for all Punjab Boards of Physics for the 9th class. In addition to BISE Lahore, and all bise board
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Chemistry Guess Papers 2023 9th Class
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Punjab Board 9th Class Chemistry Guess Paper
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Guess Paper 2023 Punjab Board 9th Class Chemistry
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CHAPTER NO.1
FUNDAMENTALS OF CHEMISTRY.
MULTIPLE CHOICE
The number of naturally occurring elements is.
02
08
108
114
Which one of the following is the Empirical formula of Benzene?
C2H2O4
C2H2O
C6H6
CH
The empirical formula of Glucose is.
CH2O
CHO
C2HO
C2H2O
The valance of iron in ferrous sulfate is.
+2
+3
+4
+5
The molecular mass of water is.
18 amu
18 g
18 mg
18 kg
How much mass is in one mole of water?
2
3
16
18
One amu is equivalent to.
1.66 x 10-24 mg
1.66 x 10-24 g
1.55 x 10-24 kg
1.66 x 10-23 g
Which one of the following molecules is not tri-atomic?
H2
O3
H2O
CO2
All of the following are triatomic molecule examples
H2
O2
H2O
CO2
SHORT QUESTIONS:
What is meant by element? Explain with example
Define Valency. Write the Valency of Na.
Define Avogadro’s number.
Define mole and give an example
Calculate the gram molecules in 40 g of phosphoric acid.
Define atomic mass unit.
Difference between Compound and Element.
What is meant by mixture? Give one example.
Define relative atomic mass based on C-12
Define the molecular formula and give an example
Write down the chemical formula of water and sugar.
Differentiate between molecular mass and formula mass
LONG QUESTIONS:
State any three/five differences between compound and mixture.
The number of (CO2) molecules in a pot is 3.01 x 1030 calculate the moles and mass.
Explain two types of molecules based on types of atoms.
Define Atomic number and Mass Number for example.
CHAPTER NO.2
STRUCTURE OF ATOM
MULTIPLE CHOICE:
Which one of the following shells contains ee sub–shells.
O –Shell
N – Shell
L – Shell
M – Shell
_________ consist of three subshell.
M –Shell
L – Shell
N – Shell
O – Shell
3. Deuterium is used to make.
Hard water
Soft water
Heavy water
Light water
Who discovered the proton?
Rutherford
J.J.Thomson
Neil Bohr
Goldstein
The P subshell has.
One orbital
Two Orbital
Three Orbital
Four Orbital
Who discovered the proton?
Rutherford
J.J.Thomson
Neil Bohr
Goldstein
Sub–shell “P” can have a maximum number of electrons.
1
4
6
8
SHORT QUESTIONS:
Write down the observations of Rutherford’s atomic model.
Compare Rutherford’s atomic theory and Bohr’s atomic theory.
Write the electronic configuration of Sulphur
Write the electronic configuration of Chloride ions Cl-
What is meant by Quantum?
Write the electronic configuration of carbon 12C6 by using subshells.
Write down the electronic configuration of nitrogen. Its atomic number is 7.
Write down defects of Rutherford’s model.
What are canal rays?
Write the electronic configuration of Aluminum.
Write the atomic number and electronic configuration of Phosphorous.
Write the electronic configuration of an element having 11 electrons.
LONG QUESTIONS:
How neutron was discovered? Write the properties.
Compare the difference between Ruther Ford’s and Neil Bohr’s atomic theories.
State any four /five properties of Cathode rays.
CHAPTER NO. 3
PERIODIC TABLE AND PERIODICITY OF PROPERTIES.
MULTIPLE CHOICE:
Who discovered the atomic number.
Dalton
Rutherford
Bohr
H. Mosely
How many blocks are there in the modern periodic table of elements?
3
4
5
6
The base of the modern periodic table is.
Mass number
Avogadro’s number
Atomic number
Quantum number
Horizontal lines are called.
Periods
Atomic number
Short periods
Long periods
How many groups are there in the long form of the periodic table?
5
18
10
20
Group 17 belongs.
Halogen
Nobel gases
Alkali metals
None
The distance between the nuclear of two carbon atoms.
154 Pm
140 Pm
110 Pm
115 Pm
The electron negativity of nitrogen is.
2
3
4
5
SHORT QUESTIONS:
What is meant by periods? Write the names elements of the first period.
Name the elements of the 1st period of the period table.
What is the trend of ionization energy in the period and group?
Define electron affinity with an example.
Name the elements of 1st group.
Define Ionization Energy.
What is the trend of ionization energy in Period?
Define electronegativity. Write electronegativity of Nitrogen, oxygen, and Florine.
LONG QUESTIONS:
Discuss any three important features of the modern periodic table.
Define atomic radius. Give its trends in periods and group of the periodic tables.
Define Shielding Effect. Explain its trend in groups and periods.
CHAPTER NO. 4
STRUCTURE OF MOLECULES.
MULTIPLE CHOICE:
The number of electrons participated in a single covalent bond.
2
3
6
8
How many electrons are involved in a triple covalent bond?
2
4
6
8
An example of a triple bond is.
O2
C2H4
N2
NH3
Which one is a polar molecule?
O2
Cl2
HCl
H2
The force among the molecules is.
Covalent force
Metallic force
Intermolecular force
Ionic force
The transistor of electrons between atoms results in.
Metallic Bounding
Ionic bounding
Covalent bounding
Coordinate covalent bonding.
A bond formed between two non–metals are expected to be.
Covalent
Ionic
Polar covalent
Coordinate covalent
Identify which pair has polar covalent bonds.
O2 and Cl2
H2O and HCl
H2O and N2
H2O and C2H2
SHORT QUESTIONS:
Define a double covalent bond and give examples.
Difference between donor atom and acceptor atom.
Define a non-polar covalent bond and give an example
Define bonding electrons.
What do you know about the triple covalent bond? Give examples.
Why is HF a weak sold?
Define polar covalent bond. Give one example
Difference between ion pair and bond pair of electrons.
Difference between the polar covalent bond and non-polar covalent bond.
Which type of covalent bond is formed in N2 gas?
Why does water has a polar covalent bond?
What is meant by Metallic bond?
LONG QUESTIONS:
Write down the properties of metals.
Explain Hydrogen bonding with one example.
How coordinate covalent bond is formed? Explain with examples.
State any four properties of covalent compounds
CHAPTER NO.5
PHYSICAL STATES OF MATTER.
MULTIPLE CHOICE:
Atmospheric pressure is measured by voltmeter
Manometer
Barometer
Lactometer
2. One atmospheric pressure is equal to how many Pascal?
a) 101325
106075
10325
10523
3. Liquids are denser than gases______________ times.
a) 100
1000
10000
100000
SHORT QUESTIONS:
What is Charles’s law? Write its equation.
Describe the effect of temperature on evaporation.
Why does evaporation increase with the increase of temperature?
Define evaporation and give an example.
LONG QUESTIONS:
State Boyle’s Law can be experimentally verified.
Define boiling point. Explain how it is affected by different factors.
What is vapor pressure? How it changes with changing temperature.
Describe three factors that affect evaporation.
CHAPTER NO.6
SOLUTIONS
MULTIPLE CHOICE:
The maximum components of the solution.
5
3
4
2
Which one of the following is solid in gas solution?
Smoke in air
Butter
Brass
Fog
An example of a solution of a solid solute in a solid solvent is.
Fog
Brass
Cheese
Air
Concentration is the Ratio of
Solvent to solute
Solute to solution
Solvent to solution
Both a and b
The volume is cm3 of solute dissolved I n 100 grams of the solution is called.
% m/m
% m/v
% v/m
% v/v
The solubility of which one decreases by increasing temperature.
Ca(OH)2
KNO3
NaCl
AgNO3
Which one is an example of suspension?
Albumin solution
Soap solution
Starch solution
Milk of magnesia
SHORT QUESTIONS:
Define an aqueous solution. Write its components.
Define unsaturated solution.
What is the difference between a solution and aqueous solution?
What do you mean by volume/volume%?
Difference between Concentrated solution and dilute solution.
Define saturated solution.
How much amount of KOH is required to form 1 molar solution?
How molar solutions are prepared.
LONG QUESTIONS:
Explain how to dilute solutions prepared from the concentrated solution.
Write a comparison between suspension and colloid
Write the four characteristics of colloids
CHAPTER NO.7
ELECTROCHEMISTRY
MULTIPLE CHOICE:
The addition of oxygen during a chemical reaction is called.
Evaporation
Condensation
Reduction
Oxidation
The addition of an electron to a substance is called.
Oxidation
Neutralization
Reduction
Ionization
Which one is not strong electrolytes?
HCl
CH3COOH
NaOH
H2SO4
Which one are strong electrolytes?
Sugar
Sodium Chloride
Benzene
Acetic acid
An example of a strong electrolyte is.
CH3COOH
Ca(OH)2
C6H6
NaOH
Which is not an electrolyte.
Sugar solution
Sulphuric acid solution
Lime solution
Sodium Chloride solution
The most common example of corrosion is.
Chemical decay
Rusting of iron
Rusting of aluminum
Rusting of tin
The formula of rust is.
Fe2O3.NH2O
Fe2O3
Fe(OH)2. H2O
Fe(OH)2
SHORT QUESTIONS:
Define oxidation and Reduction Reaction.
Define Redox Reaction. Give an example
Define electrochemical cell. While the name of its types.
Define electrolyte. Give an example.
Which salt is used as an electrolyte in chromium electroplating?
Define Alloy and give example.
Calculate the oxidation number of sulfur in H2SO4
Calculate the oxidation number of chlorine in KClO3
Why is galvanizing done?
What is meant by electroplating?
What difference between corrosion and Rusting.
LONG QUESTIONS:
Write down four/Five rules for assigning an Oxidation number to an element.
Define electroplating. Explain the electroplating of chromium in detail.
What is electroplating? How electroplating of silver is carried out.
Explain the redox reactions with the help of two examples.
Explain the process of rusting Iron.
What is corrosion/ Write four methods for prevention of corrosion?
CHAPTER NO. 8
CHEMICAL REACTIVITY
MULTIPLE CHOICE:
Metals forms ion carrying which charge.
Unipositive
Dipositive
Try positive
All
The most reactive metal is.
Iron
Gold
Cesium
Aluminum
Which metal easily breaks?
Sodium
Aluminum
Selenium
Magnesium
Which one of the following is the lightest metal?
Ca
Li
Na
Mg
SHORT QUESTIONS:
Write any two uses of Sodium.
Which metals are the most malleable and ductile?
Define Malleable and Ductile properties of metals.
Write uses of Magnesium.
Write down the names of any two moderate reactive metals.
Which is the most precious metal.
Define Metallic Character.
Write down two uses of Gold.
Write down the names of two very reactive metals.
Write any two physical properties of nonmetals.
Why Sodium Metals are more reactive than magnesium.
Write two uses of Silver.
Why platinum is used for making jewelry?
Write any two chemical properties of non-metals.
LONG QUESTIONS:
Write down four chemical properties of nonmetals.
Derive metals. Also, write three /four chemical properties of metals
9th Class Punjab Board Guess Papers 2023
These 9th-level quiz paper Punjabi boards are provided to students in the best representation form. Now, you don’t need to buy puzzle paper, because we are here to provide you with the best materials for free. Start practicing these beneficial guess papers and don’t waste any time. You will understand the importance of these guessing test papers in the exam. Students hurry up, it’s time to make the preparation work perfect through these guessing essays in Class 9 of 2023. You can view Type 9 guess papers in pdf format here, and you can also save them. 9th Class Chemistry Guess Papers 2023
biochemistry?
Define the reducing agent. ?
Define pressure and write its unit?
Define relative atomic mass. ?
Give the applications of silver.
Give scope of Bio-Chemistry.
Give the difference between electrolytic cells and electrochemical cells.
How can you define atomic radius?
Give two postulates of Bohr’s atomic theory.
Define solubility?
Define supersaturated solution?
Define standard atmosphere pressure?
Define the empirical formula as an example?
Explain the relationship between mass and mole of substance?
Define the term allotropy with examples?
Explain the term absolute zero?
How can you justify the milk is colloid?
How does oxygen react with group II A metals?
Why does sodium form a chemical bond with chloride?
Why ionic compounds are easily soluble in water?
Why have water polar covalent bonds?
Write down the names of elements of group 1 with their symbols?
Why magnesium is harder than sodium?
9th class Chemistry Long Question guess paper
Briefly describe the electrolysis of water.
Briefly describe the electrolytic refining of copper.
Define hydrogen bonding. Explain how these properties affect the physical properties of compounds.
Describe different types of molecules.
Describe different ways of expressing the percentage composition of a solution.
Describe Nelson’s Cell for the manufacture of Caustic soda from the brine solution. Differentiate between dilute
solution and concentrated solutions with a common example.
Discuss the construction and working of a cell in which electricity is produced.
Discuss the important features of the modern periodic table.
Discuss the working of Daniel’s cell.
What is a coordinate covalent bond? Explain it with an example.
What is an isotope? Describe the isotope of hydrogen with a diagram. Write a short note on Allotropy.
Write down the important chemical reactions of halogens. 9th Class Chemistry Guess Papers 2023
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