PERIODIC TEST 2 CLASS 9 PAPER SCIENCE WITH MARKING SCHEME

 

                      PM SHRI KENDRIYA VIDYALAY N.E.R. BAREILLY (2025-26)

PERIODIC TEST -2

CLASS –IX

                                                           SUBJECT – SCIENCE

TIME ALLOWED: 1:30 Hrs.                                                     MAXIMUM MARKS: 40

MCQs 

1. Which  of the following properties does not describe a compound?

a) It is composed of two or more elements

b) It is a pure substance

c)It cannot be separated into constituents by physical method

d)  it is mixed in any proportion by mass

2. During a sprinting race, Meera suddenly felt a pull where her calf muscles attached to

her leg bone. Her coach explained that a specific tissue was strained, which connects

muscles to bones and enables movement. Which type of tissue was he referring to?

(a) Ligament                (b) Tendon                      (c) Cartilage                                           (d) Bone

3.Which of the following quantities remains constant everywhere?

(a) Weight                     (b) MASS                    (c) Gravitational force       d) Acceleration due to gravity

4. Girth of stem increases due to

a) Apical meristem       b) Intercalary meristem        c) Lateral meristem            d)  vertical meristem

5.. A person standing in a moving bus that suddenly stops,the person tends to:

(a) Fall backward                   (b) Remain standing

(c) Fall sideways                   (d) Fall forward

Assertion-Reason Based Questions (1mark each)

(a) Both A and R are true and R is correct explanation of A

(b) Both A and R are true, but R is not the correct explanation of the assertion.

(c) A is true, but R is false.

Name the physical quantity(d) A is false, but R is true.

6. Assertion (A): Cardiac muscles do not get tired easily.

Reason (R): Cardiac muscles work continuously and are resistant to fatigue

7.. Assertion: When a beam of light is passed through a colloidal solution placed in a dark place the path of the beam becomes visible.

 Reason: Light gets scattered by the colloidal particles.

8.Why are the xylem and phloem called complex tissue?  and how are the different from one other

9. Shruti walking on the road.Describe her walking in terms of Newton's third law of motion  

10.Differentiate the following activities on the basis of voluntary or involuntary muscles with name

a) Jumping of the frog 

b) pumping of the heart    

c) Drawing a painting

d) Movement of chocolate in your intestine      

11.Name the physical quantity that is  product of mass of object and velocity.Write its SI unit is it vector or scalar quantity ?

12.State the factors on which the gravitational force between two objects depends.           

                           OR

A body weighs 600 N on Earth. What would be its weight on the Moon?

13.Differentiate between different types of muscular tissues with diagram and also write there functions

14. State the law of gravitation given by Newton. What is the importance of this law?

15. At Gwalior airport, Rohit has a trolley bag. He pushes the trolley on the smooth floor of the airport. Initially, the trolley is at rest. After applying a continuous force, the trolley begins to move and pick up speed.

(a) Which law of motion explains why the trolley starts moving?

(b) What is the direction of the force applied by the boy?

(c) Name the property of the trolley that resists the start of motion.

 Case study Based Questions (4 Marks)

16. A young athlete named Raj, who is a long-distance runner, experiences muscle soreness and fatigue after a grueling training session. His legs feel weak and stiff, and he's unable to continue his workout. He has also been feeling short of breath.

(a) What type of muscle tissue is primarily responsible for Raj's leg movement, enabling him to run?

(b) Describe two main characteristics of the type of muscle tissue that allows Raj to run long distances without fatigue.

(c) What other types of tissues are involved in Raj’s running, and how do they work

(d) Name sweat secreting tissue.

17.a) A solution of alcohol in water has been prepared by mixing 150 ml of alcohol with 600 ml of water. Calculate the volume. Percentage of the solution.

b) Why? Copper sulphate solution in water does not show Tyndall effect but mixture of water and milk shows .

(c) Suggest any one method by which we can increase the solubility of solution

18. A stone of 1 kg is thrown with a velocity of 20 m/s across the frozen surface of the lake and  comes to rest after travelling a distance of 50 m. What is the force of friction between the stone and ice?

MARKING SCHEME`

1.d)  it is mixed in any proportion by mass

2.    (b) Tendon  

3.     (b) mass

4.c lateral meristem.

5. (d) Fall forward

6.a

7.a

8.Xylem and phloem are called complex tissues because 
they are each composed of more than one type of cell that work together to perform a specific, unified function.

9.When Shruti walks, her feet apply an action force by pushing backward on the road, and in reaction, the road exerts an equal and opposite force (the reaction force) on her feet, pushing them forward. This forward-moving reaction force, aided by friction between her shoes and the road, is what propels Shruti and allows her to move forward.

10.

• Jumping of the frog: Voluntary 
• Pumping of the heart: Involuntary 
• Drawing a painting: Voluntary 
• Movement of chocolate in your intestine: Involuntary.

11.The physical quantity that is the product of an object's mass and velocity is called momentum. Its SI unit is the kilogram-meter per second (kg·m/s). Momentum is a vector quantity because it has both a magnitude and a direction, which is the same as the direction of the object's velocity.

12.The gravitational force between two objects depends on the product of their masses and the square of the distance between their centers. Specifically, the force is directly proportional to the product of the masses, meaning greater masses result in a stronger force, and inversely proportional to the square of the distance, meaning increasing the distance significantly reduces the force.

                                    OR

$W_{\text{Moon}}=\frac{1}{6}\cdot 600\text{N}=100\text{N}$

13.

14.

The importance of universal law of gravitation is that it explains the motion of planets around the sun, the motion of moon around the earth, and the motion of artificial satellites around the earth. It also explains the phenomena of rainfall, snowfall, and flow of water in rivers on the earth.

15

(a) The trolley starts moving because of Newton’s First Law of Motion (Law of Inertia). A body at rest remains at rest unless an external force is applied. Rohit’s push provides that external force.

(b) The direction of the force applied by the boy is in the same direction in which the trolley moves (forward, along the push).

(c) The property of the trolley that resists the start of motion is inertia of rest.

16.(a) The muscle tissue responsible for Raj’s leg movement while running is skeletal (voluntary, striated) muscle tissue.

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(b) Two main characteristics of skeletal muscle that help in long-distance running:

1. Contractile & Voluntary: They contract and relax under Raj’s conscious control, producing movement of the legs.

2. Rich in Mitochondria (especially in red muscle fibers): They provide a continuous supply of energy (ATP) through aerobic respiration, helping Raj sustain running for long periods.

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(c) Other tissues involved in running and their roles:

• Nervous tissue: Sends signals from the brain and spinal cord to muscles, coordinating movement.

• Connective tissue (bones, ligaments, tendons, cartilage): Bones act as levers, tendons attach muscles to bones, and ligaments hold joints in place.

• Epithelial tissue (lungs & blood vessels): Helps in oxygen exchange (lungs) and regulates blood flow.

• Blood (connective tissue): Transports oxygen and nutrients to muscles and removes waste like carbon dioxide and lactic acid.

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(d) The sweat-secreting tissue is epithelial tissue of sweat glands (specifically, glandular epithelium).

17.a

Given:

• Volume of alcohol (solute) = 150 ml

• Volume of water (solvent) = 600 ml

• Total volume of solution = $150 + 600 = 750}$

Now calculate:

$$\text{Volume percentage of alcohol} = \frac{150}{750} \times 100$$ $$= \frac{15000}{750} = 20$$

Final Answer: The volume percentage of alcohol in the solution is 20% (v/v).

b.Copper sulphate solution does not show Tyndall effect because it is a true solution with very small particles. Milk shows Tyndall effect because it is a colloid with larger dispersed particles that scatter light.

c.By increasing the temperature of the solvent.

• When temperature rises, solvent molecules gain more kinetic energy.

• This allows them to break solute particles apart more easily and dissolve more solute.

✅ Example: More sugar dissolves in hot water than in cold water.

18.Given data:

• Mass of stone, $m$

• Initial velocity, $u=20\text{m/s}$

• Final velocity, $v=0$

• Distance travelled, $s=50$

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Step 1: Use equation of motion

$$v^2 = u^2 + 2as$$

Substitute values:

$$0^2=(20{)}^2+2\cdot a\cdot 50$$
$$0=400+100a$$
$$a=-\frac{400}{100}=-4{\text{m/s}}^{}$$

(Negative sign shows retardation due to friction.)

Find force of friction

$$F=m\cdot a$$
$$F=1\cdot (-4)=-4\text{\hspace{0.17em}N}$$