Class 9 Science: Sample Question Paper Term I- 2 (With Solutions) | Science Class 9 PDF Download

Class - IX
Time: 90
Max. Marks: 40

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 method is applied to separate the colored material from flower petals?
(a) Centrifugation
(b) Chromatography 
(c) Sedimentation followed by decantation.
(d) Distillation

Correct Answer is Option (b)
Chromatography is a technique used for the separation of those solutes that dissolve in the same solvent. The coloured material from flower petals can be separated by chromatography process.

Q.2: Find the incorrect statement: 
A. Cambium has the apical meristem.
B. In monocot stems, the intercalary meristem is located at the base of the internodes.
C. Totipotancy exists in Meristematic cells.
D. Parenchyma contains isodiametric cells. 
(a) (A)
(b) (B) 
(c) (D) 
(d) (C)

Correct Answer is Option (a)
Totipotancy is the ability of plant parts to develop the whole plant. In monocot stems, the intercalary meristem is located at the base of internodes and parenchyma contains isodiametric cells but cambium has no apical meristem.

Q.3: How many types of elements together make up the xylem tissue? 
(a) Two
(b) Three
(c) One
(d) Four

Correct Answer is Option (d)
Xylem tissue consists of tracheids, vessels, xylem parenchyma and xylem fibres. The cells have thick walls, and many of them are dead cells. Tracheids and vessels are tubular structures. This allows them to transport water and minerals vertically. The parenchyma stores food and helps in the sideways conduction of water. Fibres are mainly supportive in function.

Q.4: 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) - (iv), (B) - (i), (C) - (iii), (D) - (ii)
(d) (A) - (iii), (B) - (ii), (C) - (iv), (D) - (i)

Correct Answer is Option (a)
i. Ist equation of motion is v = u + at
where the initial velocity = u, final velocity = v, Time = t and Acceleration = a
ii. IInd equation of motion is,
Here Initial velocity of the object = u
The final velocity of the object = v
Acceleration = a
Time = t
Distance covered in given time = s
iii. IIIrd equation of motion is v² = u + 2aS
iv. Retardation: Negative acceleration is called retardation. If the velocity of a body is decreasing with respect to time, the acceleration is said to be negative.

Q.5: A goalkeeper in a game of football pulls his hands backwards after holding the ball shot at the goal. This enables the goalkeeper to
(a) reduce the force exerted by the ball on hands
(b) exert larger force on the ball 
(c) increase the rate of change of momentum
(d) decrease the rate of change of momentum

Correct Answer is Option (d)
The goalkeeper pulls his hands backwards after holding the ball to decrease the rate of change of momentum by increasing the time. By doing this, less force is exerted on his hands (v Force is directly proportional to the rate of change of momentum).

Q.6: Which of the following statements are true for pure substances?
(i) Pure substances contain only one kind of particles
(ii) Pure substances may be compounds or mixtures 
(iii) Pure substances have the same composition throughout 
(iv) Pure substances can be exemplified by all elements other than nickel
(a) (i) and (iii)
(b) (iii) and (iv)
(c) (ii) and (iii)
(d) (i) and (ii)

Correct Answer is Option (a)

• A pure substance contains only one type of particles which can either be atoms or molecules or elements or compounds. 
• A pure substance cannot be separated into other kinds of matter by any physical process but a mixture can as they are impure substances because they contain more than one particle.
  For example, salt solutions. 
• A pure substance has fixed composition as well as fixed melting and boiling points.For example, salt. 
• Pure substances cannot be exemplified by all elements other than nickel because pure nickel is an element containing only one kind of particle.
  

Q.7: Match the following with the correct response:

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

Correct Answer is Option (a)
The energy required for various chemical activities is released by mitochondria. They contain enzymes for cellular respiration. During cellular respiration, energy is released in the form of ATP (Adenosine triphosphate). The body uses energy stored in ATP. Hence, ATP is called the energy currency of the cell. 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. 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.8: Which of the following does not lose their nucleus at maturity?
A. Red blood cells
B. Vessel
C. Companion cells
D. Sieve tube cells
(a) B and C
(b) All of these 
(c) A and C
(d) C

Correct Answer is Option (d)
Companion cells are metabolically active and sieve tube elements are dependent on these cells they do not loose nucleus at maturity. RBCs , vessels and sieve tube cells loose their nucleus at maturity.

Q.9: A particle accelerates from rest at a constant rate for some time and attains a constant velocity of 8 ms^-1. Afterward, it decelerates at a constant rate and comes to rest. If the total time taken is 4 second, the distance travelled is:
(a) 32 meter
(b) 16 metre
(c) 4 metre
(d) insufficient data

Correct Answer is Option (b)
Here total time taken by the particle = T = t₁ + t₂ = 4 sec.
Where t₁ = time during when the particle accelerates
t₂ = time during which the particle deaccelerates.
The maximum velocity attained = 8 m/sec

Q.10: How much force acts on the body whose momentum is constant (i.e. = constant)?
(a) 2p/t
(b) p/2t
(c) Zero
(d) None

Correct Answer is Option (c)
Force is the rate of change of momentum. So, momentum is constant when force is zero.

Q.11: Identify homogeneous mixture from the following:
(a) Dust storm
(b) Soap bubbles are formed by blowing air into the soap solution
(c) A suspension of chalk in water
(d) A dilute solution of alcohol in water.

Correct Answer is Option (d)
The dilute of alcohol and water is homogenous it mixes uniformly. Alcohol and water do not form a separate boundary if left undisturbed and both are uniformly distributed.

Q.12: Colourless plastids are known as_______.
(a) None of these
(b) Chloroplasts
(c) Leucoplasts
(d) Chromoplasts

Correct Answer is Option (c)
There are three major types of plastids- chloroplast, chromoplast, and leucoplast. The leucoplast is non-pigmented plastids (Leuco = white; plast = living). Their main function is to store food materials. They are not involved in synthesis activities that's why to lack any special pigmentation.

Q.13: Parenchyma cells are
(a) doubled walled and specialised
(b) thick walled and specialised
(c) lignified
(d) relatively unspecified and thin walled

Correct Answer is Option (d)
Parenchyma cells form the bulk of the plant body. Its cells are living and they possess the power of division. The cells are rounded or isodiametric, i.e., equally expanded on all sides. The cells are oval, round, polygonal or elongated in shape with a thin cell wall. It encloses a dense cytoplasm, which contains small nucleus and surrounds large central vacoule.

Q.14: Match the following with the correct response:

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

Correct Answer is Option (a)

• Unbalanced forces cause objects to accelerate with an acceleration that is directly proportional to the net force and inversely proportional to the mass.
• Mass is the quantitative or numerical measure of a body's inertia. 
• Power reduces the friction between the carom board and the striker so that strikers can slide on the board smoothly. 
• Tyres of vehicles are made rough to increase friction.
  

Q.15: Water drops sticking to the wheel come out along the tangential line due to
(a) inertia
(b) acceleration
(c) momentum
(d) force

Correct Answer is Option (a)
Inertia is the resistance of any physical object to any change in its state of motion. This includes changes to the object's speed, direction, or state of rest.

Q.16: Boron and carbon:-
(a) Boron is metalloid and Carbon is non-metal
(b) are metalloids
(c) Boron is metallic and Carbon is a metal
(d) boron is non-metal and carbon is a metalloid

Correct Answer is Option (a)
Metalloids are the elements that have properties intermediate between those of metals and nonmetals. E.g.- Boron. Whereas Carbon is a solid and is a nonmetal having properties of nonmetal.

Q.17: Which among the following can change its form into crystal:
(a) A bacterium
(b) An Amoeba
(c) A virus
(d) A sperm

Correct Answer is Option (c)
Viruses are inert. They are non-living as crystal when they are outside the host but once they enter the host they are living and multiply.

Q.18: Bones are connected to muscles at the joints by
(a) tendon
(b) adipose tissue 
(c) areolar tissue
(d) Ligament

Correct Answer is Option (a)
The bone is a connective tissue with a hard matrix, composed of calcium and phosphorus. A bone is connected by muscle with connective tissue, called a tendon.

Q.19: A body moving in a circle of radius r covers 3/4th of the circle. The ratio of the distance to displacement is:
(a) 3 : 2√2
(b) 3π : 2√2
(c) 3√2 : 2π
(d) 2√2 : 3π

Correct Answer is Option (b)
r' = r√2 displacement
distance = 3πr/2

Q.20: Inertia is of _______ types.
(a) three
(b) four
(c) two
(d) one

Correct Answer is Option (a)
Types of Inertia
Inertia of rest: In it a body can’t change its state of rest by itself.
Inertia of motion: In it a body can’t change its state of motion by itself.
Inertia of direction: In it a body can’t change its direction on its own moving in uniform motion.

Q.21: Match the following with the correct response.

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

Correct Answer is Option (d)

• An aerosol is a type of colloid in which liquid is the dispersed phase and gas is the dispersion medium. Examples include fog, clouds, mist, etc. 
• In oil-in-water emulsions, oil acts as the dispersed phase while water acts as the dispersion medium. 
• Foam is a type of colloid in which gas is the dispersed phase and solid is the dispersed medium.
• Examples include foam, rubber sponge, whipped cream, etc. 
• Sol: It is a type of colloid in which solid is the dispersed phase and liquid is the dispersed medium. Examples include milk of magnesia, mud, paint, etc.

Q.22: The major function of the Golgi apparatus is:
(a) secretion
(b) detoxification
(c) fermentation
(d) translocation

Correct Answer is Option (a)
The Golgi apparatus is the organelle in which proteins are prepared for secretion and undergo terminal glycosylation.

Q.23: Lignified, narrow, elongated and dead cells are found in
(a) collenchyma
(b) phloem
(c) parenchyma
(d) sclerenchyma

Correct Answer is Option (d)
Sclerenehyma tissue is dead simple permanent tissue of the plant. The cells of sclerenehyma are closely packed without intercellular spaces, like tiles in the mosaic floor so that, it can provide the strength, rigidity, flexibility, and elasticity to the plant to withstand various strains.

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

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

Correct Answer is Option (d)
A physical quantity having magnitude as well as direction is known as a vector quantity.
Odometer- an instrument for measuring the distance travelled by a wheeled vehicle.

Acceleration of a body - It is defined as the rate of change of its velocity with time.
Scalar- A physical quantity having only magnitude is known as a scalar quantity.

Q.25: The acceleration of a body has to be doubled without any change in force. Then one has to 
(a) decrease the mass to half 
(b) increase the mass by half 
(c) double the mass 
(d) cannot be made

Correct Answer is Option (a)
Acceleration = force / mass If force is to be kept constant then, mass must be reduced to half to make acceleration double.

Q.26: Amoeba acquires its food through a process termed: 
(a) Plasmolysis 
(b) Exocytosis 
(c) Endocytosis 
(d) Exocytosis and endocytosis both

Correct Answer is Option (c)
Amoeba acquires its food through a process termed as endocytosis. Endocytosis is a form of active transport in which a cell transports molecules (such as proteins) into the cell (endo+cytosis) by engulfing them in an energy-using process. Endocytosis includes pinocytosis (cell drinking) and phagocytosis (cell eating). On the other hand, an Exocytosis is a form of active transport in which a cell transports molecules (such as proteins) out of the cell (Exo + cytosis). Plasmolysis is a plant cell that refers to the contraction of protoplast as a result of the loss of water from the cell.

Q.27: The simple permanent tissue that consists of thick-walled, narrow, elongated, dead cells is 
(a) sclerenchyma 
(b) collenchyma 
(c) chlorenchyma 
(d) parenchyma

Correct Answer is Option (a)
Sclerenchyma Cells are long, thick-walled, and lignified with tapering ends. These are fiber-like in appearance and also known as sclerenchymatous fiber. These are dead cells and perform a mechanical function.

Q.28: Smooth muscles occur in: 
(a) Artery 
(b) Uterus 
(c) Vein
(d) All of these

Correct Answer is Option (d)
There are three kinds of muscle found in animals. Smooth muscle, skeletal muscles, and cardiac muscles. Smooth muscles are present in the uterus, artery, and veins.

Q.29: Which organelle is popularly known as the suicidal bag? 
(a) Cell membrane 
(b) Ribosomes 
(c) Lysosomes 
(d) Mesosmes

Correct Answer is Option (c)
Lysosomes are popularly known as 'suicidal bags'. They play a minor role in cell death. They were discovered and named by Belgian biologist Christian de Duve. De Duve had termed the organelles as the "suicide bags" or "suicide sacs" of the cells. Lie received the Nobel Prize in Medicine in 1974 for his discovery.

Q.30: A person sitting in the truck projected a ball vertically upwards. The ball:
(a) falls outside the car
(b) falls by the side of car 
(c) falls back in his hand
(d) falls in front of the car

Correct Answer is Option (c)
A person sitting in the truck projected a ball vertically upwards. The ball will fall back in his hand as the ball and the truck are moving at the same speed.

Q.31: Assertion (A): The sum of the momenta of two objects before the collision is equal to the sum of momenta after the collision.
Reason (R): There should be an external unbalanced force acting on the objects.
(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)
According to the law of conservation of momentum, the sum of momenta of two objects before the collision is equal to the sum of momenta after the collision, provided there is no external unbalanced force acting on the objects.

Q.32: Assertion (A): Cell wall is a non-living part of the cell.
Reason (R): It offers protection, definite shape and support.
(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)
Cell wall is a non-living part of the cell. It is an outer, rigid, protective, supportive and semi-transparent covering of plant cells only. The cell wall lies outside the plasma membrane. The cell wall is mainly composed of cellulose. It provides a definite shape to the cell. It protects plasma membrane and internal structures from the attack of pathogens and mechanical injury.

Q.33: Assertion (A): Student of class IX covered the potted plant with a glass jar, water vapour appears on the wall of the glass jar.
Reason (R): Desert plants, the epidermis has a thick waxy coating of cutin chemical substance with waterproof quality on its outer surface.
(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 (b)
When the potted plant is covered by a glass jar water vapour appears on the jar because of transpiration due to which water is released from the plant in the form of water vapour which appears on the glass jar.

Q.34: Assertion (A): A tiger can accelerate from rest at the rate of 4 m/s2.
Reason (R): The velocity attained by it in 10s is 40 m/s.
(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)
Initial velocity (u) = 0 , acceleration (a) = 4 m/s² 
v = u + at
v = 0 + 4 x 10
v = 40 m/s

Q.35: Assertion (A): Leucoplasts perform photosynthesis.
Reason (R): Chloroplasts store fats, starch, and proteins.
(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 (d)
Chloroplasts perform photosynthesis while leucoplasts are storage plastids.

Q.36: The color of the pure ammonium chloride powder is ______.
(a) red
(b) green 
(c) blue
(d) white

Correct Answer is Option (d)
Ammonium chloride is an inorganic compound with the formula NH₄Cl and a white crystalline salt that is highly soluble in water.

Q.37: Which one is a physical change?
(a) Mixing BaSO₄ + NaCl
(b) Mixing NH₃ and HCl
(c) Burning magnesium in air
(d) Adding NaCl to water

Correct Answer is Option (d)
Adding of common salt (NaCl) to water is physical change as no new substance is formed and no heat is evolved during the addition of salt in water. Also, salt can be obtained by evaporation.

Q.38: While observing a thin section of a plant stem, four students sketched sclerenchyma as given below. The correct diagram is:
(a) C
(b) B
(c) A
(d) D

Correct Answer is Option (a)
Figure C show section of a plant stem. Plant stem has pits, non-nucleated cells, thick cell walls are characteristics.

Q.39: Which is incorrect statement about action and reaction referred to Newton’s third law of motion?
A. They are not equal.
B. They are opposite.
C. They act on same object.
D. They act simultaneously.
(a) A and C 
(b) A, B and C 

(c) B and C 
(d) All of these

Correct Answer is Option (a)
Action and reaction are equal and opposite and act on two different bodies simultaneously.

Q.40: Dust particles come out of a hanging carpet when we strike it with a stick because
A. Carpet starts moving forward and backward due to inertia of motion 
B. Dust particles remain at rest
C. Dust particles start moving forward due to inertia of motion
D. Carpet remains at rest
(a) A and B are correct 
(b) All of these
(c) B and C are correct 
(d) A, B and C are correct

Correct Answer is Option (a)
Dust can be removed from a hanging carpet by shaking it or beating it with a stick. Initially, both the carpet and the dust are at rest. When the carpet is shaken or beaten with a stick, the carpets are set into motion while the dust remains in the state of rest due to the inertia of rest. Thus the dust falls down due to the pull of gravity.

Q.41: 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) - (iii), (B) - (ii),(C) - (iv), (D) - (i)
(d) (A) - (ii), (B) - (iv),(C) - (i), (D) - (iii)

Correct Answer is Option (a)

• Cell-wall is made up of cellulose - a non-living substance. Hence, a cell-wall is a non-living part of the cell. 
• Mitochondria is known as the powerhouse of the cell. They contain enzymes for cellular respiration. During cellular respiration, energy is released in the form of ATP (Adenosine triphosphate). 
• Photosynthesis is performed by chlorophyll pigments present in the Chloroplast (a plastid). 
• 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.42: Find out the incorrect sentence: 
(a) Apical and intercalary meristems are permanent tissues.
(b) Meristematic tissues, in its early stage, lack vacuoles.
(c) collenchymatous tissues are irregularly thickened at corners.
(d) Parenchymatous tissues have intercellular spaces.

Correct Answer is Option (a)

• Parenchyma serves as a packing tissue in plants therefore they have intercellular spaces, 
• Collenchymatous tissues are mechanical tissues in the plants and are characterized by the deposition of cellulose at the corners of the cell, which leads to localized thickenings of the cell wall. 
• Apical and intercalary meristem bring primary growth (increase in height) and secondary growth (increase in diameter) respectively and are classified under meristematic tissues, 
• Meristematic tissue is dividing units of the plants and contains dense cytoplasm and large nucleus with few or no vacuoles at all.

So, statements A, B, and D are a correct statement and statement C is an incorrect statement.

Q.43: Same amount of force is acting on a car and bus. If the ratio of the mass of the bus and the car is 50:1, calculate the ratio of the acceleration produced in the car to the acceleration produced in the bus
(a) 1:50
(b) 1:25 
(c) 25:1
(d) 50:1

Correct Answer is Option (d)
Let mass of bus and car are 50x and 1x respectively. Force acting on both objects is same.
So, ratio of acceleration produced = F/50x : F/1x = 50 : 1

Q.44: In the following diagram, the respective correct labelling of 1, 2 and 3 is

(a) china dish, wire gauze, tripod stand
(b) wire gauze, china dish, tripod stand
(c) china dish, tripod stand, wire gauze
(d) tripod stand, wire gauze, china dish

Correct Answer is Option (a)
In the above given figure: 1 - is a china dish, 2 - is a wire gauze and 3 - is a tripod stand.

Q.45: A student took 5 g of powdered arhar dal in a test tube and added 5 ml water into it. She shook the test tube vigorously. After adding a few drops of HC1 she observed that the dal tested positive for adulteration with metanil yellow. The observation she noted was:
(a) the water turned brown
(b) the water turned pink
(c) the water turned blue-black
(d) there was no colour change in the water

Correct Answer is Option (b)
Metanil yellow is a synthetic dye which is not permitted to use as a food colour.
However, it is extensively used to give a yellow colour to dal and turmeric. It is toxic in nature and it has adverse effects on intestine and brain. Presence of metanil yellow can be tested in dal by adding a few drops of hydrochloric acid to test sample. Of the test solution turns pink in colour, it indicates of mentanil yellow.

Q.46: Lysosomes are formed by:
(a) SER
(b) Golgi apparatus
(c) Plasma membrane
(d) RER

Correct Answer is Option (b)
Lysosomes are manufactured and budded into the cytoplasm by the Golgi apparatus with hydrolytic enzymes inside. The enzymes that are within the lysosome are made in the rough endoplasmic reticulum, which are then delivered to the Golgi apparatus to synthesise lysosomes.

Q.47: The mineral elements found in our bone making it hard, are
(a) calcium and phosphorus
(b) sodium and potassium
(c) phosphorus and sodium
(d) sodium and calcium

Correct Answer is Option (a)
Bone cells are embedded in a hard matrix, which is strengthened by fibers, and hardened by calcium and phosphorus salts. The matrix is deposited in the form of concentric layers of lamellae formed around a central Haversian canal.

Q.48: Match the following with the correct response:

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

Correct Answer is Option (a)

• Meristematic tissue is composed of rapidly dividing the undifferentiated mass of cells.
• The epidermis is the outermost layer of the plant body. 
• Blood and bones are types of connective tissues.
• Nervous tissue functions to conduct messages throughout the body.

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:
The covering or protective tissues in the animal body are epithelial tissues. Epithelium covers most organs and cavities within the body. It also forms a barrier to keep different body systems separate. Epithelial tissue cells are tightly packed and form a continuous sheet. The skin, which protects the body, is also made of squamous epithelium. Skin epithelial cells are arranged in many layers to prevent wear and tear. This columnar epithelium facilitates movement across the epithelial barrier. In the respiratory tract, the columnar epithelial tissue also has cilia, which are hair-like projections on the outer surfaces of epithelial cells. Cuboidal epithelium forms the lining of kidney tubules.
Q.53: While doing work and running, organs like hands, legs etc. move due to
I. Smooth muscles contract and pull the ligament to move the bones.
II. Smooth muscles contract and pull the tendons to move the bones.
III. Skeletal muscles contract and pull the ligament to move the bones.
IV. Skeletal muscles contract and pull the tendon to move the bones.
a. Only (II) 
b. (II) and (III) 
c. (I) and (II) 
d. (Ill) and (IV)

Correct Answer is Option (a)

Q.54: Identify the type of epithelial tissue shown in the following figure.
(a) Columnar
(b) Squamous
(c) Columnar 
(d) Glandular

Correct Answer is Option (a)

Q.55: Which cell is present in the inner lining of the intestine?
(a) columnar epithelial
(b) squamous epithelium 
(c) none of these 
(d) cuboidal epithelial

Correct Answer is Option (a)

Q.56: The function of the cuboidal epithelium is: 
(a) provide mechanical support
(b) excretion 
(c) all of these
(d) absorption

Correct Answer is Option (a)

Read the text carefully and answer the questions:
When 2 objects (two ball A and B) having masses m_A and m_B are travelling in the same direction along a straight line at different velocities v_A and v_B. There are no other external unbalanced forces acting on them but when they colloid.
Q.57: Rocket works on the principle of conservation of:
(a) energy 
(b) velocity 
(c) mass 

(d) momentum

Correct Answer is Option (d)

Q.58: If the mass of a body is doubled and its velocity becomes half, then the linear momentum of the body will 
(a) become half
(b) become four times
(c) remain the same 

(d) become double

Correct Answer is Option (c)

Q.59: Which of the following statement is incorrect? 
i. Ball A exerts a force F_AB on ball B
ii. Ball A exerts a force F_BA on ball B
iii. Momentum of ball A before the collision are m_Au_A 
iv. The force applied on both balls is in the same direction
(a) (II) and (IV)
(b) (II) and (III) 
(c) (Ill) and (IV)
(d) (I) and (II)

Correct Answer is Option (a)

Q.60: The masses of the two bodies are in ratio 5:6 and their velocities are in ratio 1:2. Then their linear momentum will be in the ratio
(a) 5:6
(b) 5:12
(c) 12:5
(d) 1:2

Correct Answer is Option (b)