Class 9 Chemistry Past Papers MCQs Grand Practice Test

The correct electronic configuration of Mg is:

How many moles of Na atoms are present in 2.3 g of Na?

Which of the element of the 3rd period has highest electronegativity?

The volume of a 0.5 M solution of hydrochloric acid containing its 2 moles is:

‘M’ shell of an atom has the following sub-shells:

Identify the metal used as a catalyst in contact process:

The oxidation state of Hydrogen in metal hydride is?

Which of the following molecules has triple covalent bond between its atoms?

Which of the following ions, Chlorine cannot oxidize?

Which of the following property of halogens is maximum among the members of their period?

How many atoms are there in 0.1 moles of Carbon?

Identify the number of electrons that the f-subshell can accommodate.

A chemist dissolves 15g of NaCl in 85g of H₂O. This solution is:

The period number of Phosphorus is:

M shell has subshells:

Keeping in view Auf Bau Principle, identify the energy level which the elements fill first.

The aqueous solutions of ionic compounds conduct electricity due to:

A solution contains 0.05 moles of KMnO₄ in 600 cm³ of solution. The morality of this solution is:

The melting point and boiling point of water are higher due to:

In the formation of AlF₃, how many electron(s) are lost by an Aluminum atom?

0.25 moles of SO₂ will contain:

Which of the following is the correct empirical formula of C₆H₄O(NO₂)₃?

A liquid boils when its vapour pressure becomes equal to:

The covalent bond is formed by:

Acetone melts at – 94°C and boils at 56°C. What is the physical state of Acetone at 25°C and 1 atm?

Identify the element which has the largest atomic radius.

A compound with chemical formula BaSX₄ has a formula mass of 233 amu. The atomic mass of the element X is:

What is the reducing agent in the following reaction?
CuO + H₂ →  Cu + H₂O

Which of the following oxides is amphoteric oxide?

Which of the following is the reaction taking place at anode?

Galvanizing is:

A 100 gram solution contains 25 grams of a solute. This solution will be called:

What is the mass of FOUR moles of Hydrogen (H₂) gas?

The equation V/T = Constant is the mathematical expression of:

The empirical formula for caffeine (C₈H₁₀N₄O₂) is:

In which group are halogen elements present?

If you move from left to right in a period of periodic table, which of the following will NOT change?

How many atoms are there in 1.25 moles of Zinc?

Galvanizing is:

An aqueous solution can dissolve 25 g of a solid at 25°C. If someone dissolves 20g of this solid in water at 25°C then this solution will be called:

The direct conversion of a solid into vapours is called:

The oxidation state of B in H₃BO₃ is:

Gain of electrons and loss of oxygen is called:

The electronic configuration “1S² 2S² 2P⁶ 3S²” belongs to:

Bromine has a melting point of – 7°C and a boiling point of 59°C. What is the physical state of Bromine at 100°C?

Which of the following is the opposite of melting?

A compound with chemical formula Na₂CX₃ has formula mass 106 amu. What is the atomic mass of the element X? [Atomic Masses: C=12, Na=23]

Consider the following reaction:
CuO + H₂  →  Cu + H₂O
In this reaction CuO behaves as:

Which of the following oxides is the most basic oxide?

The bond which is formed by complete transfer of electrons from one atom to another is called:

Which of the following is a defect of Rutherford atomic model?

In which of the following processes speed of particles decrease?

A liquid boils when its vapour pressure becomes equal to:

Which one of the following elements belongs to Group III-A of the periodic table?

Which of the following elements has greater shielding effect?

Which of the following elements in the given reaction is reduced?
ZnO + H₂  →  Zn + H₂O

A solution of NaOH has a concentration of 4g/ dm³. What is the mass of NaOH contained in 250 cm³ of this solution?

In NaCl cubic crystal each Cl^-1 ion is surrounded by ______ Na⁺ ions.

Identify the covalent compound.

If molar mass of a compound is 90 g/mole, the number of its moles containing 3.011×10²³ molecules will be:

What is the mass of Carbon present in 44 g of Carbon dioxide?

Which of the following quantities are the same for one mole of hydrogen gas and one mole of water?

In which of the following processes the speed of the particles decreases?

An electrochemical cell in which electrical energy is used to derive a chemical reaction is called:

Which of the following is the most basic oxide?

The number of neutrons in ²⁷M₁₃ is:

Particles size of colloids vary from:

Melting point of Sodium is:

A liquid boils when its vapour pressure becomes equal to:

Which one is heterogeneous mixture?

Which of the following is not the unit of pressure?

Which one of the following sub shell is filled after filling of 3p sub shell?

How many atoms are there in 28 g of N₂ gas?

Which of the following molecules have a triple covalent bond?

Chloride ion can not oxidize ______ ion.

Mention the amphoteric oxide out of given oxides.

Which element is reduced in the given redox reaction?
ZnO + H₂  →  Zn + H₂O

Which one of the following molecules has a non-polar covalent bond?

The oxidation number of Cr in Cr₂O₃ and K₂Cr₂O₇ are:

In which of the following changes the nitrogen atom is reduced?

The oxidation number of Boron B. in H₃BO₃ is:

Water boils at ______ in a pressure cooker.

In which of the following changes the nitrogen atom is reduced?

The bond formed between atoms due to transfer of electrons from one atom to another is called:

Which of the following metals is the least reactive metal?

Which is the property of crystalline solid?

Fermentation of cane sugar produces ______ v/v of ethyl alcohol called rectified spirit.

If one mole of ‘Na’ contains ‘x’ atoms of Sodium, what is the number of atoms contained in 46g of Sodium?

Which of the following solids is amorphous?

If the temperature of 30 dm³ gas is increased from 273K to 546K the volume of it will become:

The escape of molecules of a gas through a small hole one after the other is called:

The tendency of a metal to lose electrons is called:

H₂S + Cl₂   →   2HCl + S
In above reaction H₂S behaves as:

Which quantity is same for one mole of Hydrogen gas and one mole of water?

Which of the following does not involve electrolytic process?

How many molecules are present in 0.5 moles of Benzene (C₆H₆)?

The Oxidation number of ‘N’ in HNO₃ is:

Which metal is used to make filaments of electric bulb?

Which term is same for one mole of oxygen gas and one mole of water?

Which of the following groups contain alkaline earth metals?

Which of the following elements will gain one electron to complete its octet?

Which of the following substance has an ionic bond?

The atomic radius of an atom _________ as one move from top to bottom in a group of periodic table.

Which of the following elements has a greater shielding effect?

Electronic configuration of an element is 1s² 2s² 2p⁶ 3s² 3p³. In which of the following groups it will be placed?

Which of the following ions burns with brick red flame?

Which of the following is the Empirical formula of Benzene?

Which of the following molecules obey the duplet rule?

Rutherford used ________ particles in his experiment.

Alloy are an example of:

A liquid boils when its vapour pressure becomes equal to:

Which of the following atoms obeys the duplet rule?

The electronic configuration of an element is 1s², 2s². An atom of this element will form an ion that will have a charge:

Galvanizing is:

Which of the following elements belongs to group VIII A?

Which of the following elements belongs to VIII-A group?

A student mixed a solute in a solvent and made a mixture. After 15 minutes, he/she observed that solute has settled down. He/she will call this mixture as:

The number of neutrons in an atom ²³M₁₁ is:

Which one of the following compounds is not having an ionic bond?

Consider the following table:

Which of the following relationship does this table represent?

‘V ∝  T’ Relationship represents:

Which of the following elements has greater shielding effect?

Which of the following is Milk of Magnesia?

SO₂ is ___________ oxide.

What is the mass of Carbon present in 44 g of CO₂?

How many elements were known by the end of the 18^th century?

Which substance does not have an ionic bond?

Silicon belongs to group IV A. It has _______ electrons in the valence shell.

Which of the following is NOT TRUE about the formation of Na₂S?

Which of the following elements in the given reaction is reduced?
ZnO + H₂  →   Zn + H₂O

Which one of the following obeys Duplet rule?

What is maximum amount of Sodium Acetate that can be dissolved in 100 g of water at 0°C?

In chrome plating, the compound used as an electrolyte is:

The horizontal rows of the periodic table are called:

Which of the following element is most metallic?

Vegetable oil is converted into vegetable ghee by passing H₂ gas through the oil. In this process which of the following elements is used as a catalyst?

What is the oxidation state of Hydrogen in case of Metallic Hydrides?

How many moles of molecules are there in 16 g of Oxygen gas?

In Aqua Regia, the ratio between HCl (Conc.) and HNO₃ (Conc.) is:

Which one is the correct electronic configuration according to Auf Bau Principle?

Relationship “PV=Constant” represents:

At Mount Everest, what is the boiling point of water?

A solution of NaOH contains 30 g of this compound in 1.5 dm³ of solution. What is the Molarity of this solution?

Period number of Phosphorus in Periodic table is:

The number of moles in 54 g of water will be:

Number of neutrons in ²⁷M₁₃  is ________.

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

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

Atomic numbers were discovered by:

Oxidation number of Mn is KMnO₄ is:

Which substance is NOT covalent?

In chromium plating the H₂SO₄ is added to Cr₂(SO₄)₃ in order to:

Consider the following table:

Which of the following relationship does this table represent?

Which of the following atoms obeys Duplet rule?

Which of the following sub-shells can accommodate 6 electrons?

When Arshad dissolves 28 g of KOH in one dm³ of water. Its molarity will be:

Oxidation state of Cr in K₂Cr₂O₇ is:

Consider the given reaction:
H₂S + Cl₂   →  2 HCl + S
In the above reaction, H₂S behaves as a/an ________.

A solution of NaOH has a concentration of 4g/ dm³. What is the mass of NaOH contained in 250 cm³ of this solution?

Galvanizing is coating with _________.

Which of the following is Sublime?

A liquid boils when its vapour pressure is __________.

How many moles of molecules are there in 16 g Oxygen?

Valence shell electronic configuration of an element M (Atomic No 14) is:

Which of the following is a molecular ion?

In which group of the Periodic table is S present on the basis of electronic configuration?

Which of the following substance is sublimate?

Oxidation state/number of ‘Cr’ in K₂Cr₂O₇ is:

M shell has _____ subshells.

Which of the following solutions is more dilute?

The increase in ionization energy from left to right in a period is due to:

Rutherford used _____________ particles in his experiment.

NaCl forms a colorless cubic crystal. Which of the following has also the same cubic crystal as NaCl crystal?

Which of the following is an amphoteric oxide?

What is the mass of 4 moles of Hydrogen gas?

The correct electronic configuration of an atom having atomic number ‘13’ is:

The melting point of Sodium Chloride is:

Due to high ionization energies, which element do NOT lose electron?

If one mole of carbon contains x atoms, then what is the number of atoms contained in 12 g of Mg?

Al₂O₃ is an example of ________ oxide.

Which of the following is a covalent compound?

Which one of the following substances is not a sublimate?

The electronic configuration of an element is 1s², 2s². An atom of this element will form an ion that will have ______ charge.

Value of Plank’s constant is:

The electron affinity increases from left to right along a period due to:

The number of moles in 46 g of Sodium (Na) will be?

In the formation of AlF₃, Al atom loses _________ electrons.