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Test: Class 9 Science: CBSE Sample Question Paper Term I - 1


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60 Questions MCQ Test Sample Papers For Class 9 | Test: Class 9 Science: CBSE Sample Question Paper Term I - 1

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 for Class 9 2022 is part of Sample Papers For Class 9 preparation. The Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 questions and answers have been prepared according to the Class 9 exam syllabus.The Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 MCQs are made for Class 9 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 below.
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Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 1

Which of the following do not show the Tyndall effect?
A. Milk
B. The White part of the egg
C. Tincture iodine
D. Salt solution

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 1

The Tyndall effect is the scattering of light as a light beam passes through a colloid. The individual suspension particles scatter and reflect light, making the beam visible. Milk, tincture iodine, and the white part of the egg show the Tyndall effect whereas salt solution did not show the Tyndall effect.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 2

Intercalated disc is present in _____.

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 2

The heart of human beings is made up of cardiac muscles which are different from smooth and skeletal muscles. Inside the cardiac muscles are the intercalated discs which are known to join various adjacent cells together. There are a number of functions of intercalated discs. It is only when it functions properly that the heart can work effectively.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 3

Select the incorrect sentence

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 3

Tendons are white fibrous connective tissues having great strength and join skeletal muscles with bones.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 4

If two objects move in a circular path of radii in the ratio of 1:3 and take some time to complete the circle, what is the ratio of their speeds?

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 4

Let the radius of circular path be r and 3r respectively.
Let the speed of first and second objects be v1 and v2 respectively.
The length of the first track = 2πr
Time is taken by the first object = 2πr/v1
The length of the second track = 2πr(3r) = 6 πr
Time is taken by the second object t = 6πr/v2
Time taken by both object are the same

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 5

Internal forces are forces which bodies exert on each other when the bodies are part of the system is

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 5

Internal forces are those forces which are exerted on each other when the bodies are part of the system. The forces acting between the atoms of molecules that keep them together are an example of internal force.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 6

Take three test tubes A, B and C containing salt solution, egg albumin in water and suspension of sand in water. Filter the contents of A, B, C through filter paper and observe the residue and filtrate. Identify the correct statements.

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 6

A clear filtrate and no residue in A, translucent filtrate and no residue in B, solid particles as residue and clear filtrate in C.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 7

70-80% of the volume of a mature plant cell is occupied by:

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 7

Vacuoles occupy a very large part of the cell volume in plants. Upton 95% of cellular volume can be occupied by them.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 8

Which of the following components are seen in a slide of human cheek cell when observed under a microscope?

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 8

The cells do not have a cell wall. However, each cell has a thin cell membrane. A large vacuole is present at the center of each cell and is surrounded by the cytoplasm. A lightly stained cytoplasm is observed in each cell. A deeply stained nucleus is observed at the center of each cell.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 9

A particle covers equal distances in equal intervals of time. It is said to be

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 9

If a body covers equal distance in equal intervals of time then it is said to be moving at a uniform speed. Mathematically speed is defined as v = S/t , where v is the speed of the object, S is the distance covered and t is the time taken.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 10

Newton's First Law of Motion is also called as:-

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 10

Newton's first law of motion is also referred to as the Law of Inertia. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 11

Conversion of solid directly into its vapour form is called:

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 11

Sublimation is the phase transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 12

Living cells were discovered by

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 12

A.V. Leeuwenhoek in 1674 with the improved microscope, discovered free-living cells of algae Spirogyra in pond water for the first time.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 13

Complex tissue consists of:

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 13

Complex tissue consists of different types of cells carrying out the same function. They help in the transportation of organic material, water, and minerals. In plants, xylem and phloem are examples of complex tissues.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 14

A plate, a ball and child all have the same mass. The one having more inertia is the

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 14

Inertia is directly proportional to mass, hence all the above given objects will have equal inertia.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 15

Match the following with the correct response:

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 15

i. Friction is the force that makes it difficult for one object to slide along the surface of another.
ii. The limiting friction is the frictional force just sufficient to move the object.
iii. Sliding friction refers to the resistance created by two objects sliding against each other.
iv. Rolling friction refers to the resistance created by an object rolling across a surface.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 16

To observe starch granules in potato under a microscope, freshly cut surface of potato placed on a slide. The stain that will show starch granules clearly is:

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 16

Place a slice of a potato on a paper towel at top of a paper plate and add a drop of the iodine solution to the potato slice. Note the color change. A change of color to blue-black or purple color suggests that starch is present. If there is no change in color, this suggests no starch is detectable.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 17

The organelle which is absent in kidney cells is:

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 17

Since kidney is a part of an animal cell so chloroplast is absent.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 18

Smooth muscle fibres are

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 18

Smooth muscle has spindle-shaped, non-striated, uninucleated fibers and occurs in walls of internal organs. It is involuntary in action.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 19

Which of the is true for displacement?
A. It cannot be zero.
B. Its magnitude is greater than the distance travelled by the object.
C. It’s the shortest distance between initial & final position.
D. It is a vector quantity.

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 19
  • When a body moves from one position to another, the shortest (straight line) distance between the initial position and final position of the body is known as its displacement. It's a vector quantity.
  • Displacement can be zero, less than the magnitude of distance but can never be more than the magnitude of distance covered.
Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 20

A force of 5 N applied on mj produces an acceleration of 8 m/s2 and when applied on m2 produces an acceleration of 24 m/s2. When they are tied together, the acceleration will be

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 20

For the first body, F = m1a1 

For second body, F = m2a2 

Combined mass of both bodies, m1 + m2  


F = 5N, a = ?
F = ma

So, a = 6m/s2 

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 21

Which will not give a stable solution even when stirred for sometimes?

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 21

Egg albumin in water will not give a stable solution. The protein in egg albumin coagulated to form a lump in hot water.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 22

Which of the following lacks nucleus?

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 22

RBC is called as red blood corpuscles. Red Blood Cells in mammals anucleate when mature i.e. they do not contain a nucleus. This is so that the cell has maximum space for haemoglobin.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 23

The extra stain from the slide if present is removed by:

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 23

The staining of the peel must be appropriate. Excess stain can be removed by rinsing the peel with water taken in the watch glass. The extra stain from the slide if present is removed by soaking with filter paper. Filter paper absorbs the excess water and stain.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 24

Equation of motion can be used for a body having:

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 24

Relation among velocity, distance, time, and acceleration is called equations of motion. There are three equations of motion. Equation of motion can be used for a body having uniform acceleration.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 25

Find V

if U=0

a=5

t=10

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 25

v=u+at

v=0+5*10

v=50

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 26

The correct statement about the object moving along a straight path with an accelerated motion is
A. Its velocity keeps changing
B. Its speed keeps changing
C. A force is always acting on it
D. Its mass keeps on changing

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 26

The object moving along a straight path with an accelerated motion has changing velocity, speed and mass.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 27

Match the following with correct response:

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 27

Cells are enclosed by a plasma membrane composed of proteins and lipids. It separates the contents of the cell from the external environment. It permits entry of selective substances in the cell. It allows exit of selective substances from the cell.
Tonoplast is the membrane which bounds the chief vacuole of a plant cell. It is also known as the vacuolar membrane. It separates the vacuolar contents from the cytoplasm of the cell.
Stroma is the ground material of chloroplast. It is the part of a tissue or an organ that has a connective and structural role.
Each of the partial partitions in a mitochondrion formed by infolding of the inner membrane is known as Cristae.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 28

The substance found in the cell wall of cork or bark that makes it impervious to water is

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 28

The cork is impervious to water due to suberin deposition in the cell wall of its cells. The walls of cork cells are heavily thickened with an organic substance, suberin. Suberin makes these cells impervious to water and gases.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 29

The function of the upper and lower layer of cells in leaves is/are
A. Protect the inner parts
B. Synthesize food
C. Regulate the water content
D. Exchange the gases

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 29

Protection of inner parts of leaves, exchange of gases, and regulation of water is done by the upper and lower layers of cells while photosynthesis is done in the mesophyll.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 30

The outermost layer of the human cheek cell is:

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 30

The human cheek cell is an animal cell with an outermost membrane as plasma membrane.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 31

Which of the following is an example of uniform motion?
A. The motion of the car in a busy road
B. The motion of a satellite around the planet
C. The motion of the moon around the earth
D. The motion of any particle on the arm of a clock.

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 31

Uniform motion is the kind of motion in which a body covers equal distances in equal intervals of time.
For example B, C, and D, the bodies cover equal distances in equal intervals of time.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 32

Assertion (A): When astronauts throw something in space, that object would continue moving in the same direction and with the same speed.
Reason (R): The acceleration of an object produced by a net applied force is directly related to the magnitude of the force, and inversely related to the mass of the object.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 33

Assertion (A): Cell vomiting process occurs in cells to remove undigested substances, secrete hormones, enzymes, and transport various substances.
Reason (R): Cell vomiting is a process in which the waste materials from the cell are extruded through the plasma membrane by diffusing the vesicles containing materials needs to be taken out of the body.

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 33

Exocytosis or cell vomiting is a process in which the waste materials from the cell are extruded through the plasma membrane by diffusing the vesicles containing materials that need to be taken out of the body. This process occurs in cells to remove undigested substances, secrete hormones, enzymes, and transport various substances.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 34

Assertion (A): Most of plant tissues are dead.
Reason (R): Due to the sedentary existence of plants, dead cells provide mechanical strength more easily than live ones and need less maintenance.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 35

Assertion (A): When the displacement of a body is directly proportional to the square of the time. Then the body is moving with uniform acceleration.
Reason (R): The slope of velocity-time graph with time axis gives acceleration.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 36

Assertion (A): Plasma membrane is selectively permeable.
Reason (R): Plasma membrane allows some molecules to pass through it more easily than others.

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 36

Each cell is bound by an extremely delicate, thin, elastic, selectively permeable, living membrane called plasma membrane. It is selectively permeable as it allows some molecules to pass through more easily than others.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 37

A student by mistake mixed iron filings and sulphur powder. He wanted to separate them from each other. The method you would advise him to use it to dissolve the mixture in

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 37

Addition of carbon disulphide to a mixture containing iron filings and sulphur powder leads to the formation of a clear yellow solution when sulphur powder dissolves in carbon disulphide, on gentle shaking. Iron fillings being insoluble settle in the bottom. These can be separated by filtration. When the solution is allowed to evaporate, the powder of solid sulphur is obtained.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 38

When two substances A and B are powdered together in a pestle and mortar, a large amount of heat is evolved. As a result, a new substance C is formed. What is the nature of the new substance?
i. compound
ii. mixture
iii. element

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 38

A compound is a substance formed when two or more elements are chemically bonded together. The property of the compound has always different from its constituents. It has a fixed composition. The constituents of the compound can be separated by chemical or electrochemical reactions. During chemical reaction heat is evolved and a new substance is formed having new characters. Here, the reaction between substance A and substance B leads to form a new substance C. So a new substance is a compound.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 39

Lignified or thickened cell wall is a characteristic feature of

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 39

The xylem is one of the conductive tissues in plants. It is a complex tissue composed of many types of cells. The main function of xylem is to conduct water and minerals from roots to leaves. The secondary xylem also provides mechanical support due to the presence of a thick lignified cell wall.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 40

Statement A: Rocket can propel its self in a vacuum.
Statement B: Newton’s laws are universal.
Which of the two statements is true?

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 40

The rocket moves forward according to newton’s third law of motion. The gas and other substance coming out from the tail push the rocket in the forward direction. Newton’s laws are universal.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 41

Find the incorrect statement about Newton’s law of action and reaction. Action and reaction:

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 41

Newton’s third law of motion explains action and reaction. Action and reaction act simultaneously, are equal in magnitude. They act in different directions and acts on different bodies.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 42

Match the following with the correct response:

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 42
  • In a prokaryotic cell, the nuclear region is poorly defined due to the absence of a nuclear membrane. Such an undefined nuclear region containing only nucleic acids is called a nucleoid,
  • On the other hand, organisms with cells having a nuclear membrane are called eukaryotes. Eukaryotic cells are considered complete cells.
  • Viruses are the link between the living and the non-living because they lack membranes and do not show any characteristics of life until they enter the body of a host,
  • Peroxisomes are small, membrane-enclosed organelles that contain enzymes involved in a variety of metabolic reactions. They help in the removal of toxic substances from the cell. They are surrounded by only a single membrane.
Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 43

Which of the following plant tissues do not possess living protoplasm at maturity?

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 43

Sclerenchyma is permanent tissue present in different parts of plants. They are thick-walled and do not possess living protoplasm at maturity because these are dead.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 44

Match the following with the correct response.

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 44
  • Frictional force is a contact force that opposes the motion of a body.
  • The force which is just enough to bring about change in state and tend a body to motion is called limiting force of friction.
  • The force of friction which is just sufficient to make a body slide over any surface is called sliding friction.
  • Rolling friction acts upon when a body rolls over any surface.
Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 45

A mixture of iron filings and sulphur is heated in a hard boiling tube. Which of the following will be observed?

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 45

When we start heating a mixture of iron filing and sulphur, the sulphur melts reacting exothermically (that is with the production of heat) with the iron filings to form the compound Iron (II) sulfide. The compound formed has properties that are different from both sulfur and iron. For instance, the compound does not have the magnetic properties of iron, and thus a magnet that could have easily separated iron nails and sulphur initially, will not be able to separate iron and sulphur from Iron (II) sulphide.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 46

Match the following with correct response.

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 46

1- B In mixtures the components do not lose their properties.
2- D In a compound the constituent elements combine in fixed proportion by mass.
3 - A Elements are made up of same kind of atoms & elements can not be further broken down.
4 - C An atom is the smallest unit of matter that has the properties of an element.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 47

The energy currency of the cell is:

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 47

Adenosine triphosphate (ATP) is called as the energy currency of the cell. The energy produced by a cell during internal respiration is stored in the form of ATP molecules. ATP breaks into ADP and phosphate to produce energy during cellular processes.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 48

The cell walls of collenehyma tissues are unevenly thickened due to

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 48

The collenchyma is the typical supporting tissue of the primary plant body and growing plant parts, though it is kept with unaltered structure and function even in outgrown organs like stems, petioles, laminae or roots. The walls of collenchyma cells are strengthened by the deposit of cellulose and the coating with pectin. These strengthenings are often restricted to single parts or edges of the cell.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 49

Branched involuntary muscles fibres are found in

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 49

Involuntary muscles are found in walls of hollow tubular organs like an alimentary canal, ducts of glands, urogenital ducts, and blood vessels except the heart. They show slow contractions but remain contracted for a long period of time.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 50

Read the text carefully and answer the questions:
A suspension is a heterogeneous mixture in which the solute particles do not dissolve but remain suspended throughout the bulk of the medium. Particles of a suspension are visible to the naked eye. The particles of a suspension scatter a beam of light passing through it and make its path visible. Due to the relatively smaller size of particles, as compared to that of a suspension, the mixture appears to be homogeneous. The scattering of a beam of light is called the Tyndall effect. The components of a colloidal solution are the dispersed phase and the dispersion medium. The solute-like component or the dispersed particles in a colloid form the dispersed phase, and the component in which the dispersed phase is suspended is known as the dispersing medium.

Q. Which of the following is not the property of colloid?

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 51

Read the text carefully and answer the questions:
A suspension is a heterogeneous mixture in which the solute particles do not dissolve but remain suspended throughout the bulk of the medium. Particles of a suspension are visible to the naked eye. The particles of a suspension scatter a beam of light passing through it and make its path visible. Due to the relatively smaller size of particles, as compared to that of a suspension, the mixture appears to be homogeneous. The scattering of a beam of light is called the Tyndall effect. The components of a colloidal solution are the dispersed phase and the dispersion medium. The solute-like component or the dispersed particles in a colloid form the dispersed phase, and the component in which the dispersed phase is suspended is known as the dispersing medium.

Q. Sol and gel are examples of:

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 52

Read the text carefully and answer the questions:
A suspension is a heterogeneous mixture in which the solute particles do not dissolve but remain suspended throughout the bulk of the medium. Particles of a suspension are visible to the naked eye. The particles of a suspension scatter a beam of light passing through it and make its path visible. Due to the relatively smaller size of particles, as compared to that of a suspension, the mixture appears to be homogeneous. The scattering of a beam of light is called the Tyndall effect. The components of a colloidal solution are the dispersed phase and the dispersion medium. The solute-like component or the dispersed particles in a colloid form the dispersed phase, and the component in which the dispersed phase is suspended is known as the dispersing medium.

Q. A mixture of sulphur and carbon disulphide is:

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 53

Read the text carefully and answer the questions:
A suspension is a heterogeneous mixture in which the solute particles do not dissolve but remain suspended throughout the bulk of the medium. Particles of a suspension are visible to the naked eye. The particles of a suspension scatter a beam of light passing through it and make its path visible. Due to the relatively smaller size of particles, as compared to that of a suspension, the mixture appears to be homogeneous. The scattering of a beam of light is called the Tyndall effect. The components of a colloidal solution are the dispersed phase and the dispersion medium. The solute-like component or the dispersed particles in a colloid form the dispersed phase, and the component in which the dispersed phase is suspended is known as the dispersing medium.

Q. Which of the following is an example of solid sol?

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 54

Read the text carefully and answer the questions:
Cell organelles are enclosed by membranes. Cell organelles are the endoplasmic reticulum, Golgi apparatus, lysosomes, mitochondria and plastids. The endoplasmic reticulum (ER) is a large network of membrane-bound tubes and sheets. It looks like long tubules or round or oblong bags. There are two types of ER rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER). RER looks rough under a microscope because it has particles called ribosomes attached to its surface. The ribosomes, which are present in all active cells, are the sites of protein manufacture. The Golgi apparatus, first described by Camillo Golgi, consists of a system of membrane-bound vesicles arranged approximately parallel to each other in stacks called cisterns.

Q. Which of the given are covered by a single membrane?

Detailed Solution for Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 54

A lysosome is covered by a single membrane. Lysosomes are an essential cell organelle present inside the eukaryotic animal cells. Due to their function, they are also called as the “suicide bags” of the cell. Lysosomes are single membrane-bound organelles and the region inside the membrane is known as the lumen, which includes the hydrolytic enzymes and other cellular debris.  The vital role of lysosomes is digestion and removal of waste. Cellular debris or foreign particles are pulled into the cell by the process of endocytosis. The process of endocytosis takes place when the cell membrane falls in on itself (invagination), creating a vacuole or a pouch near the external contents and then bringing those contents into the cell.

Vacuole is also a single membrane structure or organelle found in the cytoplasm with varying sizes. Whereas mitochondria given in the option is double membrane bound organelle.

 

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 55

Read the text carefully and answer the questions:
Cell organelles are enclosed by membranes. Cell organelles are the endoplasmic reticulum, Golgi apparatus, lysosomes, mitochondria and plastids. The endoplasmic reticulum (ER) is a large network of membrane-bound tubes and sheets. It looks like long tubules or round or oblong bags. There are two types of ER rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER). RER looks rough under a microscope because it has particles called ribosomes attached to its surface. The ribosomes, which are present in all active cells, are the sites of protein manufacture. The Golgi apparatus, first described by Camillo Golgi, consists of a system of membrane-bound vesicles arranged approximately parallel to each other in stacks called cisterns.

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

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 56

Read the text carefully and answer the questions:
Cell organelles are enclosed by membranes. Cell organelles are the endoplasmic reticulum, Golgi apparatus, lysosomes, mitochondria and plastids. The endoplasmic reticulum (ER) is a large network of membrane-bound tubes and sheets. It looks like long tubules or round or oblong bags. There are two types of ER rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER). RER looks rough under a microscope because it has particles called ribosomes attached to its surface. The ribosomes, which are present in all active cells, are the sites of protein manufacture. The Golgi apparatus, first described by Camillo Golgi, consists of a system of membrane-bound vesicles arranged approximately parallel to each other in stacks called cisterns.

Q. The cell organelle involved in forming complex sugars from simple sugars are:

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 57

Read the text carefully and answer the questions:
Cell organelles are enclosed by membranes. Cell organelles are the endoplasmic reticulum, Golgi apparatus, lysosomes, mitochondria and plastids. The endoplasmic reticulum (ER) is a large network of membrane-bound tubes and sheets. It looks like long tubules or round or oblong bags. There are two types of ER rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER). RER looks rough under a microscope because it has particles called ribosomes attached to its surface. The ribosomes, which are present in all active cells, are the sites of protein manufacture. The Golgi apparatus, first described by Camillo Golgi, consists of a system of membrane-bound vesicles arranged approximately parallel to each other in stacks called cisterns.

Q. Find out the correct sentence about the Endoplasmic reticulum.
I. Enzymes packed in lysosomes are made through RER.
II. Rough endoplasmic reticulum and smooth endoplasmic reticulum produce lipid and protein respectively.
III. The endoplasmic reticulum is related to the destruction of the plasma membrane.
IV. The SER helps in the manufacture of fat molecules or lipids.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 58

Read the text carefully and answer the questions:
In the velocity-time graph of an object that moves under uniform acceleration as the initial velocity of the object is u (at point A) and then it increases to v (at point B) in time t. The velocity changes at a uniform rate a.

Q. A boy goes from A to B with a velocity of 20 m/min and comes back from B to A with a velocity of 30 m/min. The average velocity of the boy during the whole journey is

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 59

Read the text carefully and answer the questions:
In the velocity-time graph of an object that moves under uniform acceleration as the initial velocity of the object is u (at point A) and then it increases to v (at point B) in time t. The velocity changes at a uniform rate a.

Q. A car is moving along a straight road with uniform velocity. It is shown in the graph.

Test: Class 9 Science: CBSE Sample Question Paper Term I - 1 - Question 60

The ratio of speed to the magnitude of velocity when the body is moving in one direction is

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