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Matter in Our Surroundings Class 9 mcq. We covered all the Matter in Our Surroundings Class 9 mcq in this post for free so that you can practice well for the exam.
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mcq on Matter in Our Surroundings for Class 9 Students
Why is helium preferred instead of hydrogen in airships?
a) Helium has lower density
b) Helium has greater density
c) Helium is less reactive chemically
d) Helium is more reactive chemically
Option c – Helium is less reactive chemically
Which of the following is a uniform mixture?
a) Starch mixed with sugar
b) Methanol combined with water
c) Graphite with charcoal
d) Calcium carbonate with calcium bicarbonate
Option b – Methanol combined with water
How would you classify a mixture of sulphur and carbon disulphide?
a) Non-uniform and exhibits Tyndall effect
b) Uniform and exhibits Tyndall effect
c) Non-uniform and does not exhibit Tyndall effect
d) Uniform and does not exhibit Tyndall effect
Option d – Uniform and does not exhibit Tyndall effect
A student studied starch in water, blood, and cow milk as colloids. Which conclusion is incorrect?
a) They appear translucent
b) The components can be filtered out easily
c) These are heterogeneous yet stable
d) They display the Tyndall effect
Option b – The components can be filtered out easily
Identify the incorrect feature of a true solution
a) Its components can’t be separated through filtration
b) It appears opaque and lacks stability
c) The particles aren’t visible to the naked eye
d) It doesn’t show the Tyndall effect
Option b – It appears opaque and lacks stability
What type of mixture is formed when barium sulphate is dispersed in water for medical imaging?
a) Colloid
b) Solution
c) Suspension
d) Foam
Option c – Suspension
What is the term for the natural mixing tendency of non-reactive gases?
a) Chemical reaction
b) Diffusion
c) Effusion
d) Explosion
Option c – Effusion
Which state of Matter has the least energy in its molecules?
a) Solids
b) Liquids
c) Gases
d) Plasmas
Option a – Solids
Which method would be suitable to separate oil from water?
a) Distillation
b) Sublimation
c) Using a separating funnel
d) Chromatography
Option c – Using a separating funnel
Which separation method best works for magnetic and non-magnetic Solid materials?
a) Gases and non-metallic liquids
b) Magnetic and non-magnetic Solids like sulfur
c) Non-metallic Solids including sulfur
d) Non-magnetic Solids and non-magnetic liquids
Option b – Magnetic and non-magnetic Solids like sulfur
What kind of change is shown when water boils in an open pan?
a) Physical and can’t be reversed
b) Chemical and can’t be reversed
c) Physical and reversible
d) Chemical and reversible
Option a – Physical and can’t be reversed
Which of the following always occurs during a chemical reaction?
a) sound, Heat/Light, and Mass change
b) Heat/Light and color change
c) Only sound production
d) sound, Heat/Light, and color change
Who is considered the pioneer of modern Chemistry?
a) Michael Faraday
b) Lavoisier
c) Proust
d) Linus Pauling
Option b – Lavoisier
Which option is not considered a mixture?
a) Graphite
b) Glass
c) Brass
d) Steel
Option a – Graphite
What method would effectively separate a mixture of ZnCl₂ and PbCl₂?
a) Distillation
b) Crystallization
c) Sublimation
d) Addition of acetic Acid
Option b – Crystallization
Which of these substances has the strongest force between particles?
a) Sodium chloride
b) Hydrogen
c) Ether
d) Carbon dioxide
Option a – Sodium chloride
Which of the following is a chemical compound?
a) Stainless steel
b) Brass
c) Iron sulphide
d) Diamond
Option c – Iron sulphide
Which one has a specific boiling point?
a) True solution
b) Compound
c) Colloid
d) All of these
Option b – Compound
What is the term for a substance that helps mix oil and water?
a) Emulsifier
b) Dispersant
c) Protective colloid
d) None of these
Option a – Emulsifier
Which substance can directly change from Solid to vapor?
a) Table Salt
b) Sugar
c) Iodine
d) Potassium iodide
Option c – Iodine
What term describes the conversion of liquid to gas at a constant temperature?
a) Boiling
b) Melting
c) Fusion
d) Evaporation
Option a – Boiling
Which of the following is classified as a surface process?
a) Evaporation
b) Boiling
c) Both (a) and (b)
d) None of these
Option a – Evaporation
Which is the correct sequence for evaporation rates among water, Alcohol, petrol, and kerosene?
a) Water > Alcohol > Kerosene > Petrol
b) Alcohol > Petrol > Water > Kerosene
c) Petrol > Alcohol > Water > Kerosene
d) Petrol > Alcohol > Kerosene > Water
Option d – Petrol > Alcohol > Kerosene > Water
What is the correct definition of fusion?
a) Transition from liquid to Solid
b) Transition from Solid to liquid
c) Transition from liquid to gas
d) Transition from gas to Solid
Option b – Transition from Solid to liquid
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