Science Quiz for Class 9

With the ECTI, you will learn through the Science Quiz for Class 9 in a continuous testing process. It will help you prepare the particular topic in a row. 

On the other hand, repeated practice will ensure your grip for the best preparation. 

I am sure that the level of Science Quiz for Class 9 MCQs With The Answer is helpful material in preparing for tests, quizzes, and examinations for a grade. 

I carefully picked the most repeated but important Science MCQs of Class 9. 

In the future, I will add more Science MCQs For Class 9. If you could provide me with some valuable feedback on the selection of MCQs, I would appreciate it.

Science Quiz for Class 9 Instructions:

  • There will be 30 multiple choice questions in this Quiz.
  • Answers to the questions will change randomly each time you start this Quiz.
  • Practice this Quiz at least three times to secure High Marks.
  • You can see your scores and ratings at the end of the Quiz.
  • If you found any incorrect answers in the Quiz, click on the quiz title and comment on that MCQ so our team can update the incorrect answer on time.

  • Question of

    The chemical symbol for sodium is ______.

    • Na
    • NA
    • Sd
    • So
  • Question of

    3.42 g of sucrose are dissolved in 18 g of water in a beaker. The number of oxygen atoms in the solution are ________.

    • 6. 68 × 10
    • 6. 09 × 10
    • 6. 022 × 10
    • 6. 22 × 10
  • Question of

    A change in the physical state can be brought about ________.

    • when energy is either given to, or taken out from the system
    • only when energy is taken out from the system
    • only when energy is given to the system
    • without any energy change
  • Question of

    Percentage of calcium in calcium carbonate is ________.

    • 40
    • 30
    • 48
    • 36
  • Question of

    The molecule having an atomicity of 4 is:

    • Phosphorus molecule
    • Sulphate molecule
    • Ozone molecule
    • Methane molecule
  • Question of

    Which of the following can be made into crystal?

    • A virus
    • An Amoeba
    • A bacterium
    • A sperm
  • Question of

    A cell will swell up if:

    • the concentration of water molecules in the surrounding medium is higher than water molecules concentration in the cell.
    • the concentration of water molecules in the cell is higher than the concentration of water molecules in the surrounding medium.
    • the concentration of water molecules is same in the cell and in the surrounding medium.
    • concentration of water molecules does not matter.
  • Question of

    Chromosomes are made up of ________.

    • DNA and protein
    • RNA
    • Protein
    • DNA
  • Question of

    Which of these is not related to endoplasmic reticulum?

    • It can be the site of energy generation.
    • It behaves as a transport channel for proteins between nucleus and cytoplasm.
    • It transports materials between various regions in the cytoplasm.
    • It can be the site for some biochemical activities of the cell.
  • Question of

    Following are a few definitions of osmosis:

    • Movement of water molecules from a region of higher concentration to a region of lower concentration through a semi-permeable membrane.
    • Movement of solvent molecules from its higher concentration to lower concentration.
    • Movement of solvent molecules from higher concentration to lower concentration of solution through a permeable membrane.
    • Movement of solute molecules from lower concentration to higher concentration of solution through a semi permeable membrane.
  • Question of

    Plasmolysis in a plant cell is defined as ________,

    • shrinkage of cytoplasm in hypertonic medium
    • breakdown (lysis) of plasma membrane in hypotonic medium
    • shrinkage of nucleoplasm
    • none of them
  • Question of

    Which of the following are covered by a single membrane?

    • Vacuole
    • Lysosome
    • Mitochondria
    • Plastid
  • Question of

    Which cell organelle plays a crucial role in detoxifying many poisons and drugs in a cell?

    • Smooth endoplasmic reticulum
    • Golgi apparatus
    • Lysosomes
    • Vacuoles
  • Question of

    The proteins and lipids, essential for building the cell membrane, are manufactured by ________.

    • rough endoplasmic reticulum
    • golgi apparatus
    • plasma membrane
    • mitochondria
  • Question of

    Which out of the following is not a function of vacuole?

    • Locomotion
    • Providing turgidity and rigidity to the cell
    • Storage
    • Waste excretion
  • Question of

    Which of the following correctly represents the electronic distribution in the Mg atom?

    • 2, 8, 2
    • 3, 8, 1
    • 1, 8, 3
    • 8, 2, 2
  • Question of

    Rutherford’s ‘alpha (α) particles scattering experiment’ resulted in the discovery of:

    • nucleus in the atom
    • electron
    • proton
    • atomic mass
  • Question of

    The ion of an element has 3 positive charges. Mass number of the atom is 27 and the number of neutrons is 14. What is the number of electrons in the ion?

    • 10
    • 13
    • 14
    • 16
  • Question of

    Which of the following statement is always correct?

    • An atom has equal number of electrons and protons.
    • An atom has equal number of electrons, protons and neutrons.
    • An atom has equal number of electrons and neutrons.
    • An atom has equal number of protons and neutrons.
  • Question of

    An alpha particle is also known as:

    • a doubly-charged helium ion
    • an unionized helium atom
    • subatomic particle
    • a neutral particle
  • Question of

    When a body falls freely towards the earth, then its total energy ________.

    • remains constant
    • decreases
    • increases
    • first increases and then decreases
  • Question of

    A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process the potential energy of the car:

    • does not change
    • becomes twice to that of initial
    • becomes 4 times that of initial
    • becomes 16 times that of initial
  • Question of

    Which one of the following is not the unit of energy?

    • kilowatt
    • kilowatt hour
    • joule
    • newton metre
  • Question of

    The work done on an object does not depend upon the:

    • initial velocity of the object
    • angle between force and displacement
    • force applied
    • displacement
  • Question of

    Work done by friction:

    • decreases kinetic energy of body
    • increases kinetic energy of body
    • increases potential energy of body
    • decreases potential energy of body.
  • Question of

    During summer, water kept in an earthen pot becomes cool because of the phenomenon of:

    • evaporation
    • osmosis
    • transpiration
    • diffusion
  • Question of

    Choose the correct statement from the following:

    • Conversion of vapour into solid without passing through the liquid state is called sublimation
    • Conversion of solid into vapour without passing through the liquid state is called vaporization.
    • Conversion of vapour into solid without passing through the liquid state is called freezing.
    • Conversion of solid into liquid is called sublimation.
  • Question of

    Which condition out of the following will increase the evaporation of water?

    • Increase in temperature of water
    • Decrease in temperature of water
    • Less exposed surface area of water
    • Adding common salt to water
  • Question of

    The boiling point of water at sea level is ________.

    • 373 K
    • 273 K
    • 0°C
    • 273°C
  • Question of

    Which of the following conditions is most favorable for converting a gas into a liquid?

    • High pressure, low temperature
    • Low pressure, low temperature
    • Low pressure, high temperature
    • High pressure, high temperature

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