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Module 1 - MCQ Test, Science, Class 9 - Class 9 MCQ


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30 Questions MCQ Test - Module 1 - MCQ Test, Science, Class 9

Module 1 - MCQ Test, Science, Class 9 for Class 9 2024 is part of Class 9 preparation. The Module 1 - MCQ Test, Science, Class 9 questions and answers have been prepared according to the Class 9 exam syllabus.The Module 1 - MCQ Test, Science, Class 9 MCQs are made for Class 9 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Module 1 - MCQ Test, Science, Class 9 below.
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Module 1 - MCQ Test, Science, Class 9 - Question 1

“All cells arise from pre-existing cells” - who stated this?

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 1

Explanation:Rudolf Virchow presented the idea in 1855 that every cell arises from another (pre-existing) cell. This was a addition to the cell theory that was proposed earlier by Matthias Jakob Schleiden and Theodor Schwann.

Module 1 - MCQ Test, Science, Class 9 - Question 2

Which organelle releases energy?

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 2

Explanation:Mitochondria iscalled as power house of the cell because it contains enzymes for cellular respiration. During cellular respiration, energy is released which is stored in the form of ATP.

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Module 1 - MCQ Test, Science, Class 9 - Question 3

What is the full form of ATP?

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 3

Explanation:The full form of ATP is adenosine triphosphate. ATP is known as the energy currency of the cell. The energy required for various chemical activities is released by mitochondria. They contain enzymes for cellular respiration.

Module 1 - MCQ Test, Science, Class 9 - Question 4

The passage of water from a region of higher water concentration through a semi–permeable membrane to a region of lower water concentration is:

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 4

Explanation:The passage of water from a region of higher water concentration to a region of lower concentration through a semi-permeable membrane is called osmosis. The movement of water across the plasma membrane is affected by the amount of substance dissolved in water.  

Module 1 - MCQ Test, Science, Class 9 - Question 5

Which of the following is known as “physical basis of life”?

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 5

Explanation:According to Thomas Henry Huxley, the protoplasm is the physical basis of life. It is the living substance inside in the cell that contains all the cell organelles. It is a thick fluid or jelly-like substance.

Module 1 - MCQ Test, Science, Class 9 - Question 6

Ribosomes are the centre for:

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 6

Explanation:Protein synthesis involves formation of amino acid chain according to information present on the DNA. The ribosomes, which are present in all active cells, are the sites for the manufacture of proteins. The proteins manufactured by the ribosomes are sent to other organelles in the cell. Some proteins function as enzymes and hormones.

Module 1 - MCQ Test, Science, Class 9 - Question 7

Which of the following imparts colours to flower to attract insects for pollination?

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 7

Explanation:Plant cells have plastids. Plastids with coloured pigments impart colours to various plant parts. Green colour is provided by chloroplast and other colours (except white) are imparted by chromoplast.

Module 1 - MCQ Test, Science, Class 9 - Question 8

Which of the following is the largest cell organelle in plants?

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 8

Explanation:Plastid is the largest cell organelle in a plant. It contains chlorophyll necessary for photosynthesis. Plastid is the site of manufacture and storage of important chemical compounds used by the plant cell.

Module 1 - MCQ Test, Science, Class 9 - Question 9

Find the incorrect statement:

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 9

Explanation:Plant cells can be larger than animal cells. Size of an animal cell varies from 10 to 30 micrometers while that of a plant cell ranges from 10 to 100 micrometers. 

Module 1 - MCQ Test, Science, Class 9 - Question 10

Bacteria can not survive in a highly salted pickle. Because

Module 1 - MCQ Test, Science, Class 9 - Question 11

A particle covers equal distance in equal interval of time. It is said to be

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 11

Explanation:When a body covers equal distance in equal interval of time. It is said to be moving with constant speed. This type of motion is called uniform motion.

Module 1 - MCQ Test, Science, Class 9 - Question 12

 

The rotational K.E of hoop is equal to the

Module 1 - MCQ Test, Science, Class 9 - Question 13

The area under the velocity – time graph gives the

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 13

Explanation:The area under the velocity-time graph gives the displacement of the body. Which is equal to area of rectangle and area of triangle.

Module 1 - MCQ Test, Science, Class 9 - Question 14

The slope of distance – time graph gives instantaneous.

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 14

Explanation:The slope of a distance-time graph gives instantaneous speed of the moving object. Instantaneous speed can be more or less than average speed.

Module 1 - MCQ Test, Science, Class 9 - Question 15

Which of the following physical quantity is not present in first equation of motion?

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 15

Explanation:First equation of motion is v = u + at, so, in first equation of motion displacement is not present.

Module 1 - MCQ Test, Science, Class 9 - Question 16

A body is travelling at a constant speed in a circle it has

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 16

Explanation:A body is travelling at a constant speed in a circular path. It has an inward radial acceleration. This kind of motion will produce centrifugal force.

Module 1 - MCQ Test, Science, Class 9 - Question 17

Which of the following is a false statement

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 17

Explanation:A body can have zero velocity and still be accelerated or constant speed and still have varying velocity but a body cannot have a constant velocity and varying speed.

Module 1 - MCQ Test, Science, Class 9 - Question 18

A body is moving with a velocity of 10m/s. If the motion is uniform, what will be the velocity after 10 second?

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 18

Explanation:A body moving with uniform motion, never changes it speed. So, the velocity of the body remain same after 10 second that is 10m/s.

Module 1 - MCQ Test, Science, Class 9 - Question 19

What is the quantity which is measured as the area occupied in the velocity – time graph?

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 19

The area under the velocity time graph will give us the displacement of an object and the slope gives the acceleration

we should find the area under the graph , if the graph is irregular we need to split it into parts and finally add them and if the shape is not at all regular we should go for integration.

Module 1 - MCQ Test, Science, Class 9 - Question 20

A body is said to be in rest when

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 20

Explanation:When a body does not change its position with respect to time, it is said that body is in state of rest. Rest and motion are relative to observer.

Module 1 - MCQ Test, Science, Class 9 - Question 21

According to ancient philosophers matter consists of

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 21

Explanation:According to ancient philosophers matter consists of five constituents (panchtatva). They are air, earth, fire, sky and water.

Module 1 - MCQ Test, Science, Class 9 - Question 22

An Almirah is a solid because its

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 22

Explanation:An almirah is solid because it is hard and rigid, have fixed shape and have very high density. All these properties are possessed by solid substance only.

Module 1 - MCQ Test, Science, Class 9 - Question 23

The melting point of a substance is defined as the constant temperature at Atmospheric pressure when

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 23

Explanation:The constant temperature at which solid start changing into liquid at atmospheric temperature is called melting point. At this temperature, both the solid and liquid exist together.

Module 1 - MCQ Test, Science, Class 9 - Question 24

When acetone or nail polish remover is applied cooling is experienced due to which factor?

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 24

Explanation:Evaporation causes cooling effect because the heat of evaporation is absorbed by the surroundings. Evaporation of acetone present in nail polish remover absorbs the latent heat from the nail Causing cooling of a  nail.

Module 1 - MCQ Test, Science, Class 9 - Question 25

Name the state of matter that ‘has minimum inter-particle force of attraction’

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 25

Explanation:The particles of gases are away from each other. So, gas has the minimum inter-particle force of attraction.Solids have maximum force of attraction

Module 1 - MCQ Test, Science, Class 9 - Question 26

The inter-particle forces are the strongest in

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 26

Explanation:Solids substances have the strongest inter-particle force of attraction. In the given substances, sodium bromide is solid, ethyl alcohol is liquid and ammonia and carbon dioxide are gases. So, the particles of Sodium bromide have the strongest force of attraction.

Module 1 - MCQ Test, Science, Class 9 - Question 27

A desert cooler given comfort due to cooling caused by evaporation of water. Under which one of the following conditions it works more effectively?

Module 1 - MCQ Test, Science, Class 9 - Question 28

The two major gases present in air are

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 28

Explanation:Air is a mixture of gases. Two main constituents of air is  Nitrogen (78%) and Oxygen (21%). Other gases include carbon dioxide, helium, water vapour etc.

Module 1 - MCQ Test, Science, Class 9 - Question 29

Identify the incorrect statement

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 29

Explanation:Ether and Acetone is most volatile. Alcohol is moderately volatile and water is least volatile. So, the statement, Acetone is least volatile is incorrect statement.

Module 1 - MCQ Test, Science, Class 9 - Question 30

Which of the following statements is not true?

Detailed Solution for Module 1 - MCQ Test, Science, Class 9 - Question 30

Explanation:Anything that occupies space and have mass is called matter. Inter-particle space is maximum in the gaseous state of substance. The particles constitute zig-zag path and solid is most compact state of substance. Matter is not always continuous in nature.

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