Class 9 Science: Sample Question Paper Term I- 5 (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: To prepare a colloidal solution of starch, we should:
(a) add the thin paste of starch to hot water with stirring
(b) add starch powder to cold water and boil 
(c) add the starch powder to boiling water and cool
(d) heat starch, add it to cold water and then bring it to boil

Correct Answer is Option (a)
The colloid of starch is prepared by the dispersion method. 2-3 g of powdered/crushed starch is dissolved in 3-4 ml of water to make a thin paste. This paste is added tolOO ml of boiling water while stirring. Allow the solution to cool and filter. The filtrate is colloid of starch.

Q.2: Which of the quantities - speed, time, velocity and acceleration have the same SI unit?
(a) velocity, acceleration
(b) Acceleration, time.
(c) speed, velocity 
(d) velocity, time

Correct Answer is Option (c)
SI unit of both speed and velocity is m/s. Although velocity is a vector quantity speed is a scalar quantity.

Q.3: Inertia is the property of a body by virtue of which the body is:
(a) unable to change by itself the state of rest
(b) All of these
(c) unable to change itself the state of motion 
(d) unable to change itself the direction of motion

Correct Answer is Option (b)
Inertia is the property of a body by virtue of which the body is unable to change the state of rest or state of motion and direction as inertia is the tendency to oppose the change in state or direction.

Q.4: Lysosomes are the reservoirs of: 
(a) steroid hormones
(b) glycogen
(c) digestive enzymes 
(d) oxidising enzymes

Correct Answer is Option (c)
Lysosomes enclose digestive enzymes to digest the degenerative cells and tissues.

Q.5: Heart muscles are ____.
(a) Voluntary and striated
(b) Voluntary and multinucleate
(c) Involuntary and striated
(d) Involuntary, striated and uninucleate

Correct Answer is Option (d)
Cardiac Muscles are commonly called as Heart muscles. These are cylindrical, branched, striated, and uni-nucleate and Involuntary in nature.

Q.6: Which of the following statements are incorrect
A. The properties of a compound are different from its constituents elements
B. A mixture is homogenous but a compound is heterogeneous
C. Formation of a compound is a chemical change
D. Formation of a mixture is a chemical change
(a) (B) and (D)
(b) (A), (B) and (C)
(c) All of these
(d) (A) and (B)

Correct Answer is Option (a)

• 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. A true solution is a homogeneous mixture. 
• The compound has a fixed composition. The mixture has a variable composition. So, the compound is homogenous and the mixture is heterogeneous. 
• A compound is a substance formed when two or more elements are chemically bonded together. So, the formation of a compound is a chemical change. 
• Constituents of the mixture can be separated by physical methods. So, the Formation of a mixture is a physical change.
• So, statements (B) and (D) are incorrect statements.
  

Q.7: A body moves in a uniform circular motion because:
(a) its acceleration is zero
(b) none of these
(c) the body has an acceleration
(d) it is moving with constant velocity.

Correct Answer is Option (c)
When a body moves in a uniform circular motion then the body has an accelerated motion. It is because of a change in velocity due to continuous change in direction of motion.

Q.8: The increase in velocity acquired by a 10 kg mass in 5 seconds due to a force of 10 newton is
(a) 1 m/s
(b) 5 m/s
(c) 10 m/s
(d) 500 m/s

Correct Answer is Option (b)

Q.9: The difference between eukaryotic and prokaryotic nucleus
(a) porous, single membrane
(b) non-porous, single membrane
(c) non-porous, double membrane
(d. porous, double membrane

Correct Answer is Option (d)
The eukaryotic cell has a true nucleus which is double membranous, and porous.

Q.10: Which of the following has a single membrane?
(a) miochondria
(b) lysosome
(c) chloroplast
(d) nucleus

Correct Answer is Option (b)
The given three cell organelles nucleus, mitochondria, and chloroplast have a doublemembrane. While lysosomes is a single membrane structure.

Q.11: Cooking of food and digestion of food:-
(a) cooking is chemical whereas digestion physical
(b) are both chemical processes
(c) are both physical processes
(d) cooking is physical whereas digestion is chemical

Correct Answer is Option (b)
The cooking of food and digestion of food are both chemical process as in both chemical reaction takes place.

Q.12: Match the following with correct response.

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

Correct Answer is Option (c)
i. A body has a non-uniform motion if it travels unequal distances in equal intervals of time.
ii. The distance-time graph of a body can be used to calculate the speed of the body.The slope of a distance-time graph indicates speed.
iii. The distance travelled bya moving body in a given time can be calculated from its speed-time graph. Area enclosed by the speed-time graph with the X-axis gives the distance covered.
iv. 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:

Q.13: If an object experiences a net zero unbalanced force then the body:
(a) moves with constant velocity
(b) can be accelerated
(c) cannot remain at rest
(d) none of these

Correct Answer is Option (a)
If an object experiences a net-zero unbalanced force, then the body moves with constant velocity. Zero unbalanced forces produce no acceleration in the body and the body continues to move with the same velocity.

Q.14: Kitchen of the cells
(a) Golgi apparatus 
(b) Endoplasmic reticulum
(c) Chloroplast
(d) Mitochondria

Correct Answer is Option (c)
Chloroplasts are special structures present only in plant cells. With the help of this chlorophyll, the plants prepare their food in the presence of water, sunlight and oxygen. Hence, chloroplasts are called the kitchen of a plant cell.

Q.15: Which of the following is non - vascular?
(a) Epithelial tissue
(b) Muscular tissue
(c) Connective tissue 
(d) Nervous tissue

Correct Answer is Option (a)
Epithelial tissue is composed of cells laid together in sheets with the cells tightly connected to one another. Epithelial layers are non - vascular but innervated.

Q.16: On the laboratory table four watch glasses were placed with labels A, B, C and D. Watch glass 'A' had chalk powder, 'B' had sago powder, 'C had common salt and 'D' had powdered sugar. On adding two drops of iodine to the content of each watch glass, the one turning blue-black will be :
(a) C
(b) B
(c) D
(d) A

Correct Answer is Option (b)
Sago contains starch

Q.17: The cell organelle involved in forming complex sugars from simple sugars are
(a) Endoplasmic reticulum
(b) Plastids
(c) Golgi apparatus
(d) Ribosomes

Correct Answer is Option (c)
Golgi bodies consist of a system of membrane-bound vesicles arranged in stacks parallel to each other called cisterns. These membranes have connections with the membrane of endoplasmic reticulum (ER). Functions: 

1. It also stores, modifies and helps in the packaging of products in vesicles. 
2. In some cases, complex sugars may be made from simple sugars in it. 
3. It also helps in the formation of lysosomes.
   

Q.18: In desert plants, the rate of water loss gets reduced due to the presence of:
(a) Lignin
(b) Suberin
(c) Stomata
(d) Cuticle

Correct Answer is Option (d)
In desert plants, the rate of water loss gets reduced due to the presence of a cuticle on the leafs surface. Water is mostly lost in the form of water vapour during transpiration.

Q.19: Match the following with the correct response:

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

Correct Answer is Option (c)
i. A physical quantity having only magnitude is known as a scalar quantity. A scalar quantity has no direction.
ii. A physical quantity having magnitude as well as direction is known as a vector quantity.
iii. Artificial satellites move under uniform circular motion around the earth. An artificial satellite goes around the earth in a circular orbit.
iv. Rectilinear motion is another name for straight-line motion. This type of motion describes the movement of a particle or a body.

Q.20: The total______ contained in a body is called momentum.
(a) none of these
(b) momentum
(c) fat
(d) motion

Correct Answer is Option (d)
Momentum (p) = mass x velocity, or Momentum can be defined as "mass in motion."

Q.21: How many phases are present in a colloidal solution?
(a) 4
(b) 3
(c) 1 
(d) 2

Correct Answer is Option (d)
The components of a colloidal solution are the dispersed phase and the dispersion medium. The solute-like component of 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.22: Which of these options are not a function of Ribosomes?
i. It helps in manufacture of protein molecules
ii. It helps in manufacture of enzymes
iii. It helps in manufacture of hormones
iv. It helps in manufacture of starch molecules
(a) (iii) and (iv)
(b) (iv) and (i) 
(c) (i) and (ii)
(d) (ii) and (iii)

Correct Answer is Option (a)
Ribosomes are involved in protein synthesis. Enzymes are also proteins. Hence, ribosomes also make enzymes.

Q.23: Haversian canal is present in:
(a) Nerve
(b) Bone
(c) Muscle
(d) None of these

Correct Answer is Option (b)
Haversian canal is present in bone. Haversian canals are present in the center of osteocytes surrounded by coiled lamellae called lacunae.

Q.24: Odometer is a device installed in vehicles which measure:
(a) the acceleration of the vehicles
(b) the speed of the vehicles 
(c) the distance travelled by vehicles
(d) All of these

Correct Answer is Option (c)
The speed of a running vehicle at any instant of time is shown by an instrument called 'speedometer'. The distance travelled by a vehicle is measured by another instrument called 'odometer' which is installed in the vehicle. It records the distance in kilometres.

Q.25: A jet engine works on the principle of Newton's:
(a) second law of motion
(b) first law of motion 
(c) none of these
(d) third law of motion

Correct Answer is Option (d)
The jet engine sucks air in at the front with a fan. A compressor raises the pressure of the air. The compressor is made with many blades attached to a shaft. The blades spin at high speed and compress or squeeze the air. The compressed air is then sprayed with fuel and an electric spark lights the mixture. The burning gases expand and blast out through the nozzle, at the back of the engine. As the jets of gas shoot backward, the engine and the aircraft are thrust forward (Newton's third law of motion).

Q.26: The displacement of the body after 7.5 seconds from the beginning of the motion is
(a) 12.5 cm
(b) 75 m
(c) 100 m
(d) 87.5 m

Correct Answer is Option (d)
Displacement of the body is the area under velocity curve

Q.27: Mitochondria are sites of
(a) Anaerobic respiration
(b) Glycolysis of aerobic respiration
(c) Krebs cycle of aerobic respiration
(d) Aerobic respiration

Correct Answer is Option (d)

Q.28: Cambium is an example of
(a) simple permanent tissue
(b) internally meristem
(c) lateral meristem
(d) apical meristem

Correct Answer is Option (c)
Lateral meristem is present along the side of the stem, vascular cambium in the gymnosperms is a good example of the lateral meristem.

Q.29: The Cell theory was proposed by:
(a) Watson and Crick
(b) Mendal and Morgan
(c) Schleiden and Schwann 
(d) Darwin and Wallace

Correct Answer is Option (c)
The 'Cell theory' was proposed by Matthias Jakob Schleiden and Theodor Schwann. Schleiden wrote "Contributions to our knowledge of phytogenesis" in which he stated that all parts of the plant are composed of cells. Rudolf Virchow contributed to the Cell theory by stating that 'all cells arise from pre-existing cell'.

Q.30: Match the following with the correct response.

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

Correct Answer is Option (c)
i. The slope of a Velocity - time graph of an object moving in rectilinear motion with uniform velocity in a straight line and parallel to x-axis when velocity is taken along the y-axis and time is taken along the x-axis.
ii. Graph showing uniformly accelerated velocity then straight line sloping upwards.
iii. In the velocity-time graph of a body moving with uniform retardation is a straight line sloping downwards.
iv. If an object is travelling at a variable angular speed around a fixed axis or center point, then the motion of that object will be defined as the uniform circular motion. In this case, the object travels around a curved path and it will have some radial acceleration due to which its velocity would change direction every second.

Q.31: Assertion (A): A student is separating the mixture of camphor and salt. Camphor directly changes from solid to gaseous state on heating.
Reason (R): Students can easily separate a mixture of camphor and salt by distillation.
(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)
Camphor changes directly from solid to gaseous state on heating. So, to separate such mixtures that contain a sublimable volatile component from a non-sublimable impurity, the sublimation process is used.

Q.32: Assertion (A): RBC's kept in a hypotonic solution will swell.
Reason (R): Movement of water occurs from outside to inside the cell.
(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)
This process is called endosmosis when water moves from outside into cell and cell swell in size.

Q.33: Assertion (A): Parenchyma tissue consists of relatively unspecialized cells with thin cell walls and is usually loosely packed.
Reason (R): They do not have spaces between them.
(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)
Parenchyma tissue consists of relatively unspecialized cells with thin cell walls. They are live cells. They are usually loosely packed so that large spaces between them.

Q.34: Assertion (A): Motion of satellites around their planets is considered as accelerated motion.
Reason (R): During their motion, the speed remains constant, while the direction of motion changes continuously.
(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)

Satellites revolve around their planets in almost circular orbits with constant speed.

Thus, during their motion, the speed remains constant, while the direction of motion changes continuously. As a result, there is a change in their velocity. Therefore, the motion of satellites around their planets is considered as accelerated motion.

Q.35: Assertion (A): While walking on ice, one should take small steps to avoid slipping.
Reason (R): This is because smaller steps ensure smaller friction.
(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)

Q.36: Name the technique to separate butter from curd.
(a) Centrifugation
(b) Chromatography 
(c) Distillation
(d) Fractional distillation

Correct Answer is Option (a)
Centrifugation is a method of separating the suspended particles of a substance from a liquid in which the mixture is rotated at a high speed in a machine known as centrifuge. Butter is separated from curd by process of centrifugation in which the mixture is rotated at high speed. The lighter constituents move upward and heavier settle at the bottom.

Q.37: Which of the following is the characteristic of displacement of an object?
(a) Displacement has only magnitude and no specific direction
(b) The magnitude of the displacement is greater than the distance travelled by a moving object
(c) Displacement has magnitude as well as specific direction
(d) Displacement cannot be zero

Correct Answer is Option (c)
The shortest distance between the initial point and the final point is called displacement. Displacement has both magnitude and direction while distance has only magnitude.

Q.38: The most abundant material on the plant cell wall is:
(a) proteins 
(b) lipids 
(c) wax
(d) cellulose

Correct Answer is Option (d)
Cellulose is an important structural component of the primary cell wall of green plants, many forms of algae, and the oomycetes. Some species of bacteria secrete it to form biofilms. Thus, cellulose is the most abundant organic polymer on Earth.

Q.39: A cell placed in a hypotonic solution will:
(a) Swells up
(b) Shrinks
(c) Plasmolysis occurs
(d) No change

Correct Answer is Option (a)
When a cell is placed in a hypotonic solution, the cell swells up due to the endosmosis of water molecules from the region of higher concentration to the region of lower concentration.

Q.40: Ligament connects____.
(a) Organ to bone
(b) Bone to bone 
(c) Blood vessels to adipose tissue
(d) Bone to muscle

Correct Answer is Option (b)
A ligament is a fibrous connective tissue which attaches bone to bone, and usually serves to hold structures together and keep them stable.

Q.41: Which of the following is incorrect for Cell theory?
A. All organisms are made up of cells.
B. All living organisms are made up of eukaryotic cells only.
C. Cells arise from pre-existing cells. 
D. The outermost covering of all living cells is the cell wall.
(a) (A), (B) and (C) are incorrect
(b) (A) and (B) are incorrect
(c) All of these 
(d) (B) and (D) are incorrect

Correct Answer is Option (d)

Q.42: Which of the following statement is/are correct?
A. Chlorophyll is found in the chloroplast.
B. The nucleus is surrounded by a single membrane called the nuclear membrane.
C. Plastids are coloured.
D. Chloroplast contains DNA.
(a) (A) and (D) are correct
(b) (A), (B) and (C) are correct
(c) (B) and (C) are correct
(d) All of these

Correct Answer is Option (a)

Plant cells have plastids. Plastids with coloured pigments impart colours to various plant parts. Chlorophyll is found in the chloroplast (green plastids). Other colours (except white) are imparted by chromoplast. However, all plastids are not coloured. Chromoplasts and chloroplasts are coloured plastids whereas leucoplasts are colourless. Chloroplast contains DNA. In plants, DNA or deoxyribonucleic acid is contained within the membrane-bound cell structures of the nucleus, mitochondria and chloroplasts. The nucleus is surrounded by a double membrane - the inner nuclear membrane and the outer nuclear membrane.

Q.43: A car travels 10 m in 5 seconds, 20 m in the next 10 seconds, and 30 m in the last 10 seconds. The average speed of the motion is:
(a) 30 ms-¹ 
(b) 2.2 ms^-1 
(c) 2.4 ms^-1 
(d) 2.0 ms^-1   

Correct Answer is Option (c)
The average distance covered in unit time by a moving object is called average speed. The average speed is the ratio of total distance covered and total time taken.

Q.44: While doing an experiment with a potato, a student accidentally dropped a liquid on it, which made the potato slice blue-black. The liquid that got dropped may be:
(a) Hydrochloric acid
(b) Benedict's solution
(c) Iodine solution
(d) Sulphuric acid

Correct Answer is Option (c)

Starch is a complex carbohydrate that consists of mainly glucose molecules. It gives a blue-black colour with iodine solution.

Potato (Starch) + Iodine Solution → Blue-black colour

Q.45: An element X looks shiny but is brittle. It neither conducts electricity nor acts as an insulator, it is a semiconductor. Identify X.
(a) Non-metal
(b) Metal
(c) None of these
(d) Metalloid

Correct Answer is Option (d)
A metalloid has intermediate properties between metals and non-metals. Hence, an element 'X' is a metalloid that acts as a semiconductor that neither conducts electricity nor behaves as an insulator and may be shiny and brittle or both.

Q.46: Match the following with the correct response given below:

(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)
Mycoplasma is a genus of bacteria that lack a cell wall around their cell membrane. Without a cell wall, they are unaffected by many common antibiotics that target cell wall synthesis. Mycoplasma species are the smallest free-living organisms. Prokaryote is a unicellular organism that lacks a membrane-bound nucleus (karyon), mitochondria, or any other membrane-bound organelle.

Q.47: The muscular tissue which function throughout the life continuously without fatigue is
(a) smooth muscle
(b) cardiac muscle
(c) voluntary muscle
(d) skeletal muscle

Correct Answer is Option (b)
Cardiac muscles show characteristics of both smooth and striated muscles. These muscles are striated, cylindrical, branched and involuntary in nature. In addition to the light and dark bands, these muscles show densely stained cross bands called intercalated dises. These act as impulse boosters. Cardiac muscles contract and relax rapidly, rhythmically and tirelessly throughout a lifetime, from early embryonic stage until death.

Q.48: Given below are four operations for preparing a temporary mount of human cheek cells:
(i) Taking the scrap from inner side of the cheek and spreading it on a clean slide
(ii) Putting a drop glycerine on the material
(iii) Adding two or three drops of methylene blue
(iv) Rinsing the mouth with fresh water and disinfectant solution
The correct sequence of these operations is:
(a) (i) - (ii) - (iii) - (iv)
(b) (iv) - (i) - (iii) - (ii) 
(c) (i) - (iii) - (ii) - (iv)
(d) (iv) - (i) - (ii) - (iii)

Correct Answer is Option (b)

• Gently scrape the inner side of the cheek using a toothpick, which will collect some cheek cells.
• Place the cells on a glass slide that has water on it. q Mix the water and the cheek cells using a needle and spread them. 
• Take a few drops of Methylene blue solution using a dropper and add this to the mixture on the slide. 
• After 2-3 minutes remove any excess water and stain from the slide using a blotting paper.
• Take a few drops of glycerine using a dropper and add this to the test mixture, 
• Take a clean cover slip and lower it carefully on the mixture with the aid of a needle.
• Using a brush and needle, press the cover slip gently to spread the epithelial cells. 
• Remove any extra liquid around the cover slip using a blotting paper. 
• Place this glass side on the stage of the compound microscope and view it.

Read the text carefully and answer the questions:
Air is a homogeneous mixture and can be separated into its components by fractional distillation. The air is compressed by increasing the pressure and is then cooled by decreasing the temperature to get liquid air. This liquid air is allowed to warm-up slowly in a fractional distillation column, where gases get separated at different heights depending upon their boiling points. The properties that can be observed and specified like colour, hardness, rigidity, etc. are the physical properties. The interconversion of states is a physical change because these changes occur without a change in composition and no change in the chemical nature of the substance.
Q.49: Which of the following are chemical changes?
I. Decaying of wood
II. Burning of wood
III. Sawing of wood
IV. Hammering of a nail into a piece of wood
(a) (Ill) and (IV)
(b) (I) and (II)
(c) (I) and (IV)
(d) (II) and (III)

Correct Answer is Option (b)

Q.50: The boiling point of oxygen is
(a) -130°C 
(b) -190°C
(c) -180°C
(d) -170°C

Correct Answer is Option (c)

Q.51: ______ is a process that separates a pure solid in the form of its crystals from a solution.
(a) Crystallisation
(b) None of these
(c) Distillation
(d) Simple evaporation

Correct Answer is Option (a)

Q.52: Which of the given are physical changes?
I. Melting of iron metal
II. Rusting of iron 
III. Bending of an iron rod 
IV. Drawing a wire of iron metal
(a) (I), (III) and (IV)
(b) (II), (III) and (IV) 
(c) (I), (II) and (III)
(d) (I), (II) and (IV)

Correct Answer is Option (a)

Read the text carefully and answer the questions:
Plant cells, in addition to the plasma membrane, have another rigid outer covering called the cell wall. The cell wall lies outside the plasma membrane. The plant cell wall is mainly composed of cellulose. The nucleus has a double-layered covering called a nuclear membrane. The nuclear membrane has pores that allow the transfer of material from inside the nucleus to its outside, that is, to the cytoplasm. The nucleus contains chromosomes, which are visible as rod-shaped structures only when the cell is about to divide. Chromosomes contain information for the inheritance of characters from parents to the next generation in the form of DNA. The nucleus plays a central role in cellular reproduction, the process by which a single cell divides and forms two new cells.
Q.53: Cellulose is a complex substance which provides:
a. both mechanical support and structural strength to plants 
b. mechanical support 
c. structural strength to plants 
d. none of these

Correct Answer is Option (c)

Q.54: Chromosomes are made up of:
(a) Protein
(b) RNA
(c) DNA 
(d) DNA and protein

Correct Answer is Option (d)

Q.55: Plasmolysis in a plant cell is defined as: 
I. breakdown (lysis) of the plasma membrane in hypotonic medium 
II. shrinkage of cytoplasm in hypertonic medium 
III. shrinkage of nucleoplasm 
IV. swelling of cytoplasm
(a) (IV) and (I)
(b) (II) and (III) 
(c) (I) and (II)
(d) Only (II)

Correct Answer is Option (d)

Q.56: Identify (A) in the given diagram
(a) nucleic acid
(b) nucleus 
(c) nucleolus
(d) nucleoid

Correct Answer is Option (d)

Read the text carefully and answer the questions:
The change in the position of an object with time can be represented on the distance-time graph adopting a convenient scale of choice. In the distance-time graph, time is taken along the x-axis and distance is taken along the y-axis.
Q.57: A man travels a distance of 1.5 m towards East, then 2.0 m towards South and finally 4.5 m towards East. What is the total distance traveled?
(a) 8m 
(b) 16m 
(c) 5m 
(d) 7m

Correct Answer is Option (a)

Q.58: Four cars A, B, C and D are moving on a levelled road. Their distance versus time graphs are shown in the adjacent figure. Choose the correct statement.
(a) Car C is the slowest
(b) Car D is faster than car C
(c) Car B is the slowest 
(d) Car A is faster than car D

Correct Answer is Option (c)

Q.59: If the displacement of an object is proportional to the square of time, then the object is moving with:
(a) decreasing acceleration
(b) increasing acceleration 
(c) uniform velocity
(d) uniform acceleration

Correct Answer is Option (d)

Q.60: Which of the following statement is correct for distance-time graph?
I.Time is taken along the x-axis
II. When an object travels equal distances in equal intervals of time, it moves with uniform speed
III. Distance-time graphs can be employed under various conditions
IV. For uniform speed, a graph of distance travelled against time is a curved line
(a) (II) and (IV)
(b) (I) and (III)
(c) (Ill) and (II)
(d) (I), (II) and (III)

Correct Answer is Option (b)