Class 9 Science: Sample Question Paper Term I- 4 (With Solutions) | Science Class 9 PDF Download

Class - IX
Time: 90

General Instructions:

1. The Question Paper contains three sections.
2. Section - A has 24 questions. Attempt any 20 questions.
3. Section - B has 24 questions. Attempt any 20 questions.
4. Section - C has 12 questions. Attempt any 10 questions.
5. All questions carry equal marks.
6. There is NO negative marking.

Q.1: Which of the following are homogeneous in nature
i. ice
ii. wood
iii. soil 
iv. air
(a) (iii) and (iv)
(b) (i) and (iii)
(c) (i) and (iv)
(d) (ii) and (iv)

Correct Answer is Option (c)
A mixture is said to be a homogeneous mixture if its constituents are distributed uniformly and are not physically distinct. Wood and soil are heterogeneous mixtures. Ice is made up of water and water is a pure compound. Air is a mixture of various gases.
Ice and air are homogeneous in nature.

Q.2: Which of the following is correct about uniform circular motion?
A. The direction of motion is continuously changed.
B. The direction of motion is not changed.
C. Speed and direction both remain constant.
D. Speed is constant, but the direction is changing.
(a) A and D
(b) B and C
(c) All of these
(d) A and C

Correct Answer is Option (a)
Uniform circular motion can be described as the motion of an object in a circular path at a constant speed. When a body moves along a circular path then its direction of motion keeps changing continuously.

Q.3: If force, change in momentum and time are given by F, p and t respectively, then they are related by
(a) F = pt
(b) p = F²t
(c) F = P/t
(d) Ft² = p

Correct Answer is Option (c)
F = P/t because momentum can be given as the product of the force applied and time.

Q.4: Find out the false sentence.
(a) Mitochondria is said to be the power house of the cell as ATP is generated in them.
(b) Nucleus, mitochondria, and plastid have DNA; hence they are able to make their own structural proteins.
(c) The cytoplasm is called as protoplasm.
(d) Golgi apparatus is involved with the formation of lysosomes.

Correct Answer is Option (c)
Protoplasm is considered as the physical basis of life. The protoplasm of a cell consists of a nucleus, cell membrane, and cytoplasm. Thus, the cytoplasm is a part of the protoplasm of the cell. The protoplasm is bound by the plasma membrane whereas the cytoplasm is the part of the protoplasm which surrounds the nucleus.

Q.5: Identify the CORRECT option for sclerenchyma tissue.
(a) Irregularly thickened at the corners
(b) None of these
(c) Lignified
(d) Unspecialized cells with thin cell walls

Correct Answer is Option (c)
Sclerenchyma tissues are greatly thickened due to the deposition of lignin. Thus, they are lignified.

Q.6: When a beam of light is passed through a colloidal solution, it gets.
(a) Reflected
(b) Retracted 
(c) Scattered
(d) Absorbed

Correct Answer is Option (c)
Scattering of a beam of light when it passes through a solution is called the Tyndall effect. The particles scatter a beam of light passing through the colloidal solution and the path of light is visible in the solution.

Q.7: Match the following with correct response.

(a) 1-A, 2-C, 3-B, 4-D
(b) 1-C, 2-B, 3-D, 4-A
(c) 1-B, 2-D, 3-A, 4-C
(d) 1-D, 2-A, 3-C, 4-B

Correct Answer is Option (d)
i. Velocity of a body is defined as the rate of change of its displacement with time, v = s/t
ii. Acceleration of a body is defined as the rate of change of its velocity with time, a = (v - u)/t
iii. Average velocity -If the velocity of a body is always changing,but changing at a uniform rate,then the average velocity is given by the "arithmetic mean" of the initial and final velocity for a given period of time,that is: Average velocity, V_av = (v+u)/2
iv. Third equation of motion, v² - u² = 2as

Q.8: Match the following with the correct response:

(a) (A) - (i), (B) - (iii), (C) - (ii), (D) - (iv)
(b) (A) - (ii), (B) - (iv), (C) - (i), (D) - (iii)
(c) (A) - (iii), (B) - (ii), (C) - (iv), (D) - (i)
(d) (A) - (iv), (B) - (i), (C) - (iii), (D) - (ii)

Correct Answer is Option (b)
i. Forces that cause a change in the motion or state of an object are unbalanced forces.
ii. Inertia is a tendency to do nothing or to remain unchanged. 
iii. One of the methods of reducing friction is by applying grease. 
iv. Force is the push or pulls that is applied to an object to change its momentum.

Q.9: The number of lenses in a compound microscope is:
(a) 1
(b) 4
(c) 3
(d) 2

Correct Answer is Option (d)
The compound microscope contains two lenses that magnify the object. It uses a lens (called the objective lens) close to the object being viewed to collect light which focuses on a real image of the object inside the microscope. The image is then magnified by a second lens (called the eyepiece) that gives the observer an enlarged inverted virtual image of the object.

Q.10: Ribosomes are made up of _______.
(a) Both RNA and Proteins
(b) RNA
(c) Lipoprotein
(d) Proteins

Correct Answer is Option (a)
Ribosomes consist of two major components: the small ribosomal subunit, which reads the RNA, and the large subunit, which joins amino acids to form a polypeptide chain. Each subunit is composed of one or more ribosomal RNA (rRNA) molecules and a variety of ribosomal proteins (r-protein).

Q.11: Recovery of salt solution in water can be done by:
(a) condensation
(b) evaporation
(c) filtration
(d) dissolving in more water

Correct Answer is Option (b)
Although the salt is dissociated in solution, it still retains the property that it has a different boiling point from water. The water will evaporate first, leaving salt crystals behind.

Q.12: A body is travelling at a constant speed in a circle, It has:
(a) constant velocity
(b) an outward radial acceleration.
(c) it is not accelerated
(d) an inward radial acceleration

Correct Answer is Option (d)
The body moves with the constant speed it means that tangential acceleration = 0 and only centripetal acceleration exists whose directions are always towards the center or inwards.

Q.13: A high jum per runs for a while before taking high jump so that the inertia of ______ help him in taking a long jump. 
(a) shape
(b) direction
(c) rest
(d) motion

Correct Answer is Option (d)
A high jumper runs for a while before taking high jump so that the inertia of motion helps him in taking a higher jump.

Q.14: A prokaryotic cell does not possess:
(a) nuclear membrane
(b) both cell membrane and nuclear membrane
(c) cell membrane
(d) cell wall

Correct Answer is Option (a)
Prokaryotes do have their genomic DNA concentrated and localized to a small area within the cell (nucleoid region). So it's not entirely accurate to say that prokaryotes don't have a nucleus.

Q.15: A person met with an accident in which 2 long bones of hand were dislocated. Which among the following may be the possible reason?
(a) Break of skeletal muscles
(b) Tendon break
(c) Ligament break 
(d) Areolar tissue break

Correct Answer is Option (c)
Ligament is a connective tissue that connects one bone to another.

Q.16: Rusting of an article made up of iron is called 
(a) corrosion and it is a physical as well as chemical change
(b) dissolution and it is a physical 
(c) dissolution and it is a chemical change
(d) corrosion and it is a chemical change

Correct Answer is Option (d)

Q.17: 'Ribosomes' are associated with the synthesis of: 
(a) Proteins 
(b) Vitamins 
(c) Carbohydrates
(d) Fats

Correct Answer is Option (a)
'Ribosomes' are associated with the synthesis of proteins from amino acids. Proteins are required by a cell for functions such as repair or directing chemical processes.

Q.18: Which of the following is not present in neurons? 
(a) Axon
(b) Dendrites
(c) Cell body 
(d) Ligaments

Correct Answer is Option (d)
Ligaments are not present in the nerve cells. The ligament is a connective tissue that connects bone to bone. It is very elastic and has great strength.

Q.19: If the v-t graph is a straight line inclined to the time axis, then:
(a) a ≠ 0
(b) a = constant ≠ 0
(c) a ≠ constant ≠ 0
(d) a = 0

Correct Answer is Option (a)
The negative value of acceleration signifies deceleration or in other words, the velocity is decreasing.

Q.20: A batsman hits a cricket ball which then rolls on a level ground. After covering a short distance, the ball comes to rest. The ball stops because
(a) Velocity is proportional to the force exerted on the ball.
(b) There is no unbalanced force on the ball, so the ball would want to come to rest.
(c) There is a force on the ball opposing the motion.
(d) The batsman did not hit the ball hard enough.

Correct Answer is Option (c)
The ball slows down and comes to rest due to opposing forces of air resistance and frictional force on the ball opposing its motion.

Q.21: Which of the following is correct about solubility
A. It increases with increase in temperature
B. Mass of solute dissolution in 100 units of solvent
C. The Solubility of common salt in water in 46g at 20°C
D. It decreases with decrease in temperature
(a) A, C and D
(b) A, B and D
(c) All of these
(d) A, B and C

Correct Answer is Option (b)

• Lor liquids and solid solutes, increasing the temperature not only increases the amount of solute that will dissolve but also increases the rate at which the solute will dissolve, for gases, the reverse is true. An increase in temperature decreases both solubility and rate of solution.
• So, statement A and D correct. 
• A way to measure solubility is to determine the maximum mass of solute that can be dissolved in 100 grams of solvent at a particular temperature. So, statement B correct.
• Sodium chloride, NaCl, is a soluble salt. The solubility of sodium chloride is 36 g/100 mL water at 25°C. So, statement B incorrect.
  

Q.22: Match the following with the correct response:

(a) (A) - (i), (B) - (iii), (C) - (ii), (D) - (iv)
(b) (A) - (iv), (B) - (i), (C) - (iii), (D) - (ii)
(c) (A) - (iii), (B) - (ii), (C) - (iv), (D) - (i)
(d) (A) - (ii), (B) - (iv), (C) - (i), (D) - (iii)

Correct Answer is Option (d)

• Lysosomes are popularly known as 'suicidal bags'. They play a role in cell death,
• The main function of the centriole is to help with cell division in animal cells. The centrioles help in the formation of the spindle fibers that separate the chromosomes during cell division (mitosis). 
• The Golgi apparatus is responsible for transporting, modifying, and packaging proteins and lipids into vesicles for delivery to targeted destinations.
• The smooth ER is involved in the synthesis of lipids.
  

Q.23: Match the following with the correct response:

(a) (A) - (ii), (B) - (iv), (C) - (i), (D) - (iii)
(b) (A) - (i), (B) - (iii), (C) - (ii), (D) - (iv)
(c) (A) - (iii), (B) - (ii), (C) - (iv), (D) - (i)
(d) (A) - (iv), (B) - (i), (C) - (iii), (D) - (ii)

Correct Answer is Option (d)

• Adipose tissue is present in the subcutaneous layer, 
• Stratified squamous epithelium is present in the skin, 
• Striated muscles are skeletal muscles. 
• The main component of the joint surface is a special tissue called hyaline cartilage.
  

Q.24: Match the following with the correct response.

(a) (A) - (i), (B) - (iii), (C) - (ii), (D) - (iv)
(b) (A) - (iv), (B) - (i), (C) - (iii), (D) - (ii)
(c) (A) - (ii), (B) - (iv), (C) - (i), (D) - (iii)
(d) (A) - (iii), (B) - (ii), (C) - (iv), (D) - (i)

Correct Answer is Option (b)

• Scalar- A physical quantity having only magnitude is known as a scalar quantity. A scalar quantity has no direction. 
• Vector- A physical quantity having magnitude as well as direction is known as a vector quantity. 
• Circular motion - Motion about a fixed point called the centre. In other words, motion in a circle is circular motion. 
• Rectilinear motion- Rectilinear motion is another name for straight-line motion. This type of motion describes the movement of a particle or a body.

Q.1: Match the following with correct response.

(a) 1-C, 2-B, 3-D, 4-A
(b) 1-B, 2-D, 3-A, 4-C
(c) 1-D, 2-A, 3-C, 4-B
(d) 1-A, 2-C, 3-B, 4-D

Correct Answer is Option (b)

• An unbalanced force cause change in the state of motion i.e. acceleration in a body.
• Inertia has an approach to remain conserved. 
• Grease reduces friction which may lead to wear and tear of machine parts, 
• Force can be defined as the rate of change of momentum.

Q.26: Which cell organelle is called the digestive bag?
(a) Centrosome
(b) Lysosome
(c) Chromosome
(d) Mesosome

Correct Answer is Option (b)
The lysosomes called a digestive bag as it contains hydrolytic enzymes that help in the digestion of food and hydrolysis of cell constituents. It is also called a "suicide bag".

Q.27: Which of the following is the role of the epidermis in plants?
(a) Regulation of transpiration
(b) Protection
(c) All of these
(d) Formation of insulation stationary air layer with the help of hair.

Correct Answer is Option (c)
The epidermis in plants provides protection, regulation of transpiration, and formation of insulation stationary air layer with the help of hair on the surface of it.

Q.28: The efferent part of the neuron is:
(a) Cyton
(b) Plasma
(c) Dendrite
(d) Axon

Correct Answer is Option (d)
Axon is the part of the neuron that transfers the nerve impulse away from neuron cells. Axon is called efferent part or neuron.

Q.29: Function(s) of Endoplasmic Reticulum is/are:
A. Synthesis of proteins
B. Transfer of hereditary characters 
C. Synthesis of lipids
D. Processing and packaging
(a) (A), (B) and (C) are correct
(b) (B) and C) are correct
(c) All of these
(d) (A) and (C) are correct

Correct Answer is Option (d)
There are two types of Endoplasmic Reticulum (ER). The Rough Endoplasmic Reticulum (RER) has particles called ribosomes attached to its surface. Ribosomes are the sites of protein manufacture. The smooth endoplasmic reticulum (SER) helps in the manufacture of fat molecules or lipids. Some of these proteins and lipids help in building the cell membrane (known as membrane biogenesis). Processing and packaging are done by the Golgi apparatus.

Q.30: Which of the following is a false statement?
A. The body can have a constant velocity and still have a varying speed.
B. The body can have zero velocity and still be accelerated.
C. The body can have a constant speed and still have varying velocity 
D. The direction of the velocity of a body can change when its acceleration is constant.
(a) (A)
(b) (C)
(c) (D) 

(d) (B)

Correct Answer is Option (a)
If velocity is constant then the speed has to be constant. A body can have a constant speed but a changing velocity because the direction can change while the speed is constant. (A car goes 50 mph around a roundabout). However, a body cannot have a constant velocity at changing speed.

Q.31: Assertion (A): A rocket works on the principle of conservation oflinear momentum.
Reason (R): For two bodies system when there is a change in momentum of one body, the same change occurs in the momentum of the second body but in the opposite direction.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

Correct Answer is Option (a)
As the fuel in the rocket undergoes combustion, the gases so produced leave the body of the rocket with a large velocity and give upthrust to the rocket. If we assume that the fuel is burnt at a constant rate, then the rate of change of momentum of the rocket will be constant. As more and more fuel gets burnt, the mass of the rocket goes on decreasing and it leads to an increase in the velocity of the rocket more and more rapidly.

Q.32: Assertion (A): Mitochondria are called powerhouses of the cell.
Reason (R): Mitochondria produce cellular energy in the form of ATP. 
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

Correct Answer is Option (a)
Mitochondria are cell organelles of aerobic eukaryotes. These are sites of aerobic respiration, where the Krebs cycle occurs in the matrix, while ETS and oxidative phosphorylation enzymes are located in the inner membrane. They are called powerhouses of cell because they produce energy in the form of ATP. They are the major centres of the release of energy in aerobic respiration.

Q.33: Assertion (A): Surface of skin is impervious to water.
Reason (R): Surface of skin is covered by stratified cuboidal epithelium.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A. 
(c) A is true but R is false.
(d) A is false but R is true.

Correct Answer is Option (c)
The surface of the skin is impervious to water because it is covered by stratified keratinized squamous epithelium. This epithelium has many superficial layers of horny, scale-like remains of dead squamous cells and several deeper layers of living polygonal cells. Heavy deposits of the insoluble protein keratin are present in the dead superficial layers which make this epithelium impervious to water. Stratified cuboidal epithelium, on the other hand, lines the inner surface of the sweat gland, large salivary, and pancreatic ducts.

Q.34: Assertion (A): Velocity versus time graph of a particle in uniform motion along a straight path is a line parallel to the time axis.
Reason (B): In uniform motion the velocity of a particle increases as the square of the time elapsed.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false. 
(d) A is false but R is true.

Correct Answer is Option (c)
When a particle is in uniform motion, the magnitude of its velocity at each instant such as t = 0, t = Is, t = 2s ... etc. is always constant. Hence the velocity versus time graph for a particle in uniform motion along a linear path is a straight line parallel to the time axis.

Q.35: Assertion(A): Lysosome is called a suicidal bag.
Reason(R): Lysosomes contain certain digestive enzymes that help to auto digest the cell in case if there is an infection.
(a) Both A and R are true and R is the correct explanation of A. 
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true and R is false. 
(d) A is false and R is true.

Correct Answer is Option (a)
Lysosomes help in autodigestion of cells hence they are regarded as a suicidal bag.

Q.36: To make a saturated solution, 50g of sugar is dissolved in 100 g of water at 293 K. What is its concentration at this temperature?
(a) 10%
(b) 33.3% 
(c) 20% 
(d) 36%

Correct Answer is Option (b)
Mass of solute = 50 g
Mass of solution = 50 + 100 = 150
Concentration of solution

Q.37: The components of compound can be separated by using
(a) chemical method 
(b) physical method
(c) none of these 
(d) cannot be separated by using any method.

Correct Answer is Option (a)
The components of compound can be separated by chemical methods only because they have undergone chemical changes while formation which is physically irreversible.

Q.38: Collenchyma differs from sclerenchyma in: 
(a) Having a wide lumen
(b) Being meristematic 
(c) Retaining cytoplasm at maturity 
(d) Having thick walls

Correct Answer is Option (c)
Collenchyma consists of cells having thick-walled cells only on the corner but sclerenchyma has thick-walled cells devoid of cytoplasm. So, collenchyma differs from sclerenchyma in retaining cytoplasm at maturity.

Q.39: The incorrect option regarding action-reaction pair is
(a) they are equal and opposite
(b) their sum on/by a body is zero 
(c) they act only between bodies in contact
(d) they act on two different bodies

Correct Answer is Option (b)
According to Newton's 3rd law of motion, action and reaction are of equal magnitude and directed in the opposite direction.
e.g if action force F_ab and reaction force F_ba 
then, F_ab + F_ba = 0

Q.40: The passenger feels a jerk forward when a bus moving at a high speed suddenly stops. This happens due to:
(a) the gravitational pull of the Earth 
(b) inertia of passenger
(c) inertia of bus
(d) none of these

Correct Answer is Option (b)
When a moving bus at high speed suddenly stops, the passenger feels jerk in forwarding direction due to inertia of motion, which tends to keep the moving passenger to continue moving.

Q.41: "Viruses are non-cellular organisms" - this statement is a: 
(a) Partially false
(b) True statement 
(c) False statement 
(d) Partially true

Correct Answer is Option (b)
It is true that viruses are non-cellular organisms. Viruses do not contain cell membranes and other cellular organelles. Viruses are the link between the living and the non-living. They do not show any characteristics of life until they enter the body of a host. They then use the host cell machinery for reproduction.

Q.42: The columnar epithelial cells possess cilia in
(a) intestine
(b) digestive tract
(c) stomach
(d) respiratory tract

Correct Answer is Option (d)
Columnar epithelium in the intestine and columnar epithelium with cilia in the lining of the respiratory tract.

Q.43: Inflated balloon lying on the surface of a floor moves forward when pierced with a pin.
The above-mentioned phenomena is due to
(a) Newton’s fist law of motion
(b) Conservation of energy
(c) Newton’s second law of motion
(d) Newton’s third law of motion

Correct Answer is Option (d)
Inflated balloon lying on the surface of a floor moves forward when pierced with a pin due to Newton’s third law of motion. The air coming out of the balloon forces the balloon in the opposite direction.

Q.44: What is not observed when a magnet is moved repeatedly through a mixture of iron filings and sulphur placed on a paper? 
(a) Iron filings stick to the magnet
(b) A black mass of iron sulphide is formed
(c) Sulphur powder is left on the paper
(d) All of these

Correct Answer is Option (d)
Iron filling are attracted to the bar magnet. A black substance is formed on heating. Sulphur dissolves in CS₂ and a yellow solution is formed. Solid sulphur reappears when CS₂ is evaporated. So all statements are correct.

Q.45: Match the following with the correct response.

(a) (a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)
(b) (a) - (i), (b) - (iii), (c) - (ii), (d) - (iv)
(c) (a) - (ii), (b) - (iv), (c) - (i), (d) - (iii)
(d) (a) - (iii), (b) - (ii), (c) - (iv), (d) - (i)

Correct Answer is Option (a)

• Mixture is a combination of two or more substances that are not chemically united and do not exist in fixed proportions to each other. 
• The compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by various physical and chemical methods. 
• Element is a pure chemical substance consisting of one type of atom.
• Atom a basic unit of matter which takes place in a chemical reaction.

Q.46: Select the odd one out
(a) Molecules soluble in an organic solvent can easily pass through the membrane.
(b) The movement of water across a semi-permeable membrane is affected by the number of substances dissolved in it.
(c) The plasma membrane contains chitin and sugar in plants.
(d) Membranes are made up of organic molecules like proteins and lipids.

Correct Answer is Option (c)
The odd statement is - Plasma membrane contains chitin and sugar in plants. Other statements describe the movement of molecules across the semi-permeable membrane and the associated phenomena.

Q.47: A permanent tissue is described as complex tissue when it has
(a) more than one type of cells, performing one common function
(b) more than one type of cells, performing different functions
(c) one type of cells, performing one function
(d) one type of cells, performing two or more different functions

Correct Answer is Option (a)
The complex tissue consists of more than one type of cell. All the cells coordinate to perform a common function, they transport water, minerals salts, food material to various parts of the plant body.

Q.48: Which type of WBC is most abundant in lymph?
(a) Neutrophil
(b) Lymphocyte
(c) Monocyte
(d) Eosinophil

Correct Answer is Option (b)
Lymphocytes of white blood cells are most abundant in the lymph. Lymph is the extracellular fluid that contains WBC but RBC in it.

Read the text carefully and answer the questions: 
Mixtures are constituted by more than one kind of pure form of matter. Sodium chloride is itself a pure substance matter. The solution is a homogeneous mixture of two or more substances. Lemonade, soda water etc. are all examples of solutions. Alloys are mixtures of two or more metals or a metal and a non-metal and cannot be separated into their components by physical methods. A solution has a solvent and a solute as its components. The component of the solution that dissolves the other component in it (usually the component present in a larger amount) is called the solvent. The component of the solution that is dissolved in the solvent (usually present in lesser quantity) is called the solute.
Q.49: In a water-sugar solution:
(a) water is solute and water is also solvent
(b) water is solvent and sugar is solute
(c) water is solute and sugar is solvent
(d) none of these

Correct Answer is Option (b)

Q.50: The particles of a solution are smaller than:
(a) 10 nm in diameter
(b) 1 nm in diameter
(c) 6 nm in diameter
(d) 5 nm in diameter

Correct Answer is Option (b)

Q.51: Which of the following statements are true for pure substances?
(a) Pure substances may be compounds or mixtures.
(b) Pure substances have different compositions throughout.
(c) Pure substances can be exemplified by all elements other than nickel.
(d) Pure substances contain only one kind of particle.

Correct Answer is Option (d)

Q.52: Brass is a mixture of:
(a) 30% zinc and 40% copper 
(b) 30% zinc and 70% copper
(c) 60% zinc and 70% copper
(d) 70% zinc and 50% copper

Correct Answer is Option (b)

Read the text carefully and answer the questions:
Animal tissues are of many types such as epithelial tissue, connective tissue, muscular tissue and nervous tissue. Blood is a type of connective tissue, and muscle forms muscular tissue. The nature of the matrix differs in concordance with the function of the particular connective tissue. Blood has a fluid (liquid) matrix called plasma, in which red blood corpuscles, white blood corpuscles and platelets are suspended. Blood flows and transports gases, digested food, hormones and waste materials to different parts of the body. Bone is another example of connective tissue. It forms the framework that supports the body. It also anchors the muscles and supports the main organs of the body. Another type of connective tissue, cartilage, has widely spaced cells.
Q.53: Identify the following figure.
(a) Adipose tissue
(b) Compact bone
(c) Hyaline cartilage
(d) Areolar tissue

Correct Answer is Option (a)

Q.54: The cells of connective tissue are
(a) loosely spaced
(b) none of these
(c) Both loosely spaceda and embedded in an intercellular matrix
(d) embedded in an intercellular matrix

Correct Answer is Option (c)

Q.55: Bone cells are embedded in a hard matrix that is composed of
(a) calcium and magnesium compound
(b) calcium and phosphorus compounds
(c) Both calcium and phosphorus compounds and calcium and potassium compound
(d) calcium and potassium compound

Correct Answer is Option (b)

Q.56: Two bones can be connected to each other through:
(a) none of these
(b) muscle 
(c) ligament
(d) tendon

Correct Answer is Option (c)

Read the text carefully and answer the questions:
While catching a fast-moving cricket ball, a fielder in the ground gradually pulls his hands backward with the moving ball. This is an application of the second law of motion.
Q.57: Which of the following situations involves Newton’s second law of motion? 
(a) A force can accelerate a lighter vehicle more easily than a heavier vehicle that is moving 
(b) A force can stop a lighter vehicle as well as a heavier vehicle which are moving
(c) A force exerted by the escaping air from a balloon in the downward direction makes the balloon go upwards
(d) A force exerted by a lighter vehicle on collision with heavier vehicle results in both the vehicles coming to a standstill

Correct Answer is Option (a)

Q.58: What force would be needed to produce an acceleration of 4 m/s² in a ball of mass 6 kg?
(a) 27N
(b) 24N
(c) 25N
(d) 26N

Correct Answer is Option (b)

Q.59: Which of the following is the incorrect match?
(a) The inertia of a body depends on it - Mass
(b) The resultant force is zero - Unbalanced forces 
(c) SI unit of momentum - kg m/s² 
(d) The tendency of a body to resist change in its state of motion or rest.

Correct Answer is Option (b)

Q.60: When a balloon held between the hands is pressed, its shape changes. This happens because:
(a) Balanced forces act on the balloon
(b) Frictional forces act on the balloon
(c) Gravitational force acts on the balloon
(d) Unbalanced forces act on the balloon

Correct Answer is Option (a)