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MODEL PAPER - 9 [2026] Science - MODEL PAPER - 9 [2026]

CBSE - STD 10 - Science (CBSE - English Medium). 46 questions in this chapter.

Question types

MODEL PAPER - 9 [2026] question types

46 questions across 17 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

46
Questions
17
Question groups
5
Question types
Sample Questions

MODEL PAPER - 9 [2026] questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q1 Mark
Slides A and B show stages of asexual reproduction in two different organisms.
Image
The slides A and B are depicting
  • A
    Binary fission in Yeast and budding in Amoeba
  • B
    Budding in both Amoeba and Yeast
  • C
    Binary fission in Amoeba and budding in Yeast
  • D
    Binary fission in both Amoeba and Yeast
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Q 2M.C.Q1 Mark
The part of seed which is a source of food during germination of seed is:
  • A
    Radicle
  • B
    Plumule
  • C
    Cotyledon
  • D
    Embryo
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Q 3M.C.Q1 Mark
During vigorous exercise, the occurrence of cramps in the outer muscles of an athlete is due to the conversion of pyruvate to:
  • A
    Lactose
  • B
    Glucose
  • C
    Lactic acid
  • D
    Ethanol
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Q 4M.C.Q1 Mark
Which one of the following is not an advantage of building large dams?
  • A
    Generation of elecuicity
  • B
    Use in growth of water intensive crops
  • C
    Adequate storage of water
  • D
    Decrease in biological diversity
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Q 5M.C.Q1 Mark
Sensory nerve of a reflex arc carries information from the receptor cells to the:
  • A
    brain
  • B
    bones of the receptor organ
  • C
    spinal cord
  • D
    muscles of the effector organ
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Q 6M.C.Q-[Che-1M]1 Mark
Which of the following substances produce hydrogen on reacting with metals?
  • A
    Water ( $\mathrm{H}_{2} \mathrm{O}$ )
  • B
    $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}$
  • C
    $\mathrm{H}_{2} \mathrm{SO}_{4}$
  • D
    All of these
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Q 7M.C.Q-[Che-1M]1 Mark
Which of the following gives the correct increasing order of acidic strength?
a. Sodium chloride < Acetic acid < Hydrochloric acid
b. Sodium chloride < Hydrochloric acid < Acetic acid
c. Acetic acid < Sodium chloride < Hydrochloric acid
d. Hydrochloric acid < Sodium chloride < Acetic acid
  • A
    Sodium chloride < Acetic acid < Hydrochloric acid
  • B
    Acetic acid < Sodium chloride < Hydrochloric acid
  • C
    Hydrochloric acid < Sodium chloride < Acetic acid
  • D
    Sodium chloride < Hydrochloric acid < Acetic acid
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Q 8M.C.Q-[Che-1M]1 Mark
Consider the structures of the three cyclic carbon compounds A, B and C given below and select the correct option from the following:
Image
  • A
    A and C are isomers of hexane and B is benzene.
  • B
    A is a saturated cyclic hydrocarbon and B and C are unsaturated cyclic hydrocarbons.
  • C
    A is an isomer of hexane, B is benzene and C is an isomer of hexene.
  • D
    A is cyclohexane and B and C are the isomers of benzene.
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Q 9M.C.Q-[Che-1M]1 Mark
The following diagram shows the electrolytic refining of copper:
Image
Which of the following statements is incorrect description of the process?
  • A
    The impure metal from the anode dissolves into the electrolyte.
  • B
    Insoluble impurities settle down at the bottom of the anode.
  • C
    On passing the current through the electrolyte, the pure metal from the anode dissolves into the electrolyte.
  • D
    The pure metal from the electrolyte is deposited on the cathode.
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Q 10M.C.Q-[Che-1M]1 Mark
Match the following with the correct response:
Column AColumn B
(i) Welding(a) Ethyl alcohol
(ii) Fuel in a spirit lamp(b) Ester
(iii) Lime water turns milky(c) Carbon dioxide
(iv) Fruity smell(d) Ethyne and oxygen
  • A
    (i) - (c), (ii) - (b), (iii) - (d), (iv) - (a)
  • B
    (i) - (a), (ii) - (c), (iii) - (b), (iv) - (d)
  • C
    (i) - (b), (ii) - (d), (iii) - (a), (iv) - (c)
  • D
    (i) - (d), (ii) - (a), (iii) - (c), (iv) - (b)
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Q 14[2 Mark Questions]2 Marks
i. From the following group of organisms create a food chain which is the most advantageous for Human beings in terms of energy.
Image
ii. State the possible disadvantage if the cereal plant is growing in soil rich in pesticides.
iii. Construct a food web using the organisms mentioned above.
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Q 17[3 Mark Questions]3 Marks
a. Explain the surgical method of contraception used by (i) males, and (ii) females to prevent fertilisation.
b. Write the role of oral pills taken by women as a contraceptive.
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Q 18[3 Mark Questions]3 Marks
A red-eyed individual is crossed with a white-eyed individual to produce $F_{1}$ progeny with red eyes. When $F_{1}$ individuals are intercrossed, $\mathrm{F}_{2}$ progeny is formed with both red as well as white-eyed individuals.
a. How is the dominant trait identified?
b. What are recessive traits?
c. If 12 individuals are produced in $\mathrm{F}_{2}$ generation, then how many white-eyed individuals would be obtained? Calculate the ratio of red-eyed individuals to white-eyed individuals.
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Q 19Answer the questions.[Che-3M]3 Marks
Pratyush took sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube over it.
What will be the action of gas on
i. Dry litmus paper?
ii. Moist litmus paper?
Write a balanced chemical equation for the reaction taking place.
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Q 21Answer the questions.[Che-3M]3 Marks
Silver chloride kept in a china dish turns grey in sunlight.
a. Write the colour of silver chloride when it was kept in the china dish.
b. Name the type of chemical reaction taking place and write the chemical equation for the reaction.
c. State one use of the reaction. Name one more chemical which can be used for the same purpose.
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Q 22[5 marks Questions]5 Marks
What constitutes the central and peripheral nervous systems? How are the components of central nervous system protected? Which signals will get disrupted in case of a spinal cord injury?
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Q 23[5 marks Questions]5 Marks
a. List three different categories of contraception methods.
b. Why has Government of India prohibited prenatal sex determination by law? State its benefits in the long run.
c. Unsafe sexual act can lead to various infections. Name two bacterial and two viral infections caused due to unsafe sex.
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Q 24case /data -based [Che-4M]4 Marks
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Q 25case /data -based [Che-4M]4 Marks
More than three million carbon compounds have been discovered in the field of chemistry. The diversity of these compounds is due to the capacity of carbon atoms for bonding with one another as well as with other atoms.
Most of the carbon compounds are poor conductors of electricity and have low melting and boiling points.
a. Write the molecular formula of first two members of homologous series having functional group
b. Given below are the formulae of some functional groups:
Image

Write the name of these functional groups.
c. What would be observed on adding a $5 \%$ alkaline potassium permanganate drop by drop to some warm ethanol taken in a test tube? State the role of $\mathrm{KMnO}_{4}$ in the reaction and write the chemical equation for the reaction involved.
OR
Write the name of the compound formed when ethanol is heated at 443 K temperature with excess of conc.$\mathrm{H}_{2} \mathrm{SO}_{4}$. What is the role of conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$ in the reaction? Write the chemical equation for the reactioninvolved.
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Q 27Answer the questions.[Che-5M]5 Marks
Explain chlor-alkali process and write balanced chemical equations for the reactions that occur. Name the gases obtained at the anode and cathode respectively. Mention two uses each of the two gases obtained in the above process.
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Q 28Answer the questions.[Che-5M]5 Marks
In an industrial process used for the manufacture of sodium hydroxide, a gas $\mathbf{A}$ is formed as a by-product. The gas A reacts with lime water to give a compound $\mathbf{B}$ which is used as a bleaching agent in the chemical industry. Identify $\mathbf{A}$ and $\mathbf{B}$. Also give the chemical equations of the reactions involved.
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Q 29M.C.Q-[Phy-1M]1 Mark
Figure shows the magnetic field lines between the two faces A and B of two magnets.
Image
  • A
    Both faces A and B of two bar magnets are North pole.
  • B
    Face A is south pole while face B is north pole.
  • C
    Both faces A and B of two bar magnets are South pole.
  • ✓
    One direction at any point in space

Answer: D.

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Q 30M.C.Q-[Phy-1M]1 Mark
An old person is unable to see clearly nearby objects as well as distant object. To correct the vision, what kind of lens will he require?
  • A
    Concave lens
  • B
    Convex lens
  • C
    Bifocal lens whose upper portion is convex lens and lower portion is concave lens
  • D
    Bifocal lens whose upper portion is concave lens and lower portion is convex lens
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Q 31Assertion - Reasoning [Phy-1 M]1 Mark
Assertion (A): As the temperature of a medium increases the refractive index decreases.
Reason (R): When a ray travels from a vacuum to a medium, then $\mu$ is known as the absolute refractive index of the medium. ( $\mu_{\text {vacuum }}=1$ ).
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Q 32Answer the questions.[Phy-2M]2 Marks
The rest position of the needles in a milliammeter and voltmeter, not in use, are as shown in Figure A. When a student uses these instruments in his experiment, the readings of the needles are in the positions shown in Figure B. Determine the correct values of current and voltage the student should use in his calculations.
Image
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Q 33Answer the questions.[Phy-2M]2 Marks
An electric lamp, whose resistance is $20 \Omega$, and a conductor of $4 \Omega$ resistance are connected to a 6 V battery. Draw the circuit diagram. Calculate (a) the total resistance of the circuit, and (b) the current through the circuit.
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Q 34Answer the questions.[Phy-2M]2 Marks
A teacher gives a convex lens and a concave mirror of focal length of 20 cm each to his student and asks him to find their focal lengths by obtaining the image of a distant object. The student uses a distant tree as the object and obtains its sharp image, one by one, on a screen. The distances $\mathrm{d}_{1}$ and $\mathrm{d}_{2}$ between the lens/mirror and the screen in the two cases and the nature of their respective sharp images are likely to be
a. ( $20 \mathrm{~cm}, 40 \mathrm{~cm}$ ) and (erect and erect)
b. ( $20 \mathrm{~cm}, 40 \mathrm{~cm}$ ) and (inverted and inverted)
c. ( $20 \mathrm{~cm}, 20 \mathrm{~cm}$ ) and (inverted and inverted)
d.( $20 \mathrm{~cm}, 40 \mathrm{~cm}$ ) and (erect and inverted)
Give reason for your answer.
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Q 35Answer the questions.[Phy-3M]3 Marks
a. Draw the pattern of magnetic field lines produced by a current carrying circular loop showing the direction of current in the loop and the direction of the magnetic field lines.
b. State the rule which can be applied to know the direction of magnetic field lines in the above case.
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Q 37Answer the questions.[Phy-3M]3 Marks
1. Write the function of each of the following parts of human eye : cornea, iris, crystalline lens, ciliary muscles.
2. Millions of people of the developing countries of world are suffering from corneal blindness. These people can be cured by replacing the defective cornea with the cornea of a donated eye.
A charitable society of your city has organised a campaign in your neighbourhood in order to create awareness about this fact.
If you are asked to participate in this mission how would you contribute in this noble cause?
1. State the objective of organising such campaigns.
2. List two arguments which you would give to motivate the people to donate their eyes after death.
3. List two values which are developed in the persons who actively participate and contribute in such programme.
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Q 38case /data -based [Phy-4M]4 Marks
How do we express electric current? Electric current is defined by the amount of charge flowing through a particular area in unit time. In other words, it is the rate of flow of electric charges. In circuits using metallic wires, electrons constitute the flow of charges. However, electrons were not known at the time when the phenomenon of electricity was first observed. So, electric current was considered to be the flow of positive charges and the direction of flow of positive charges was taken to be the direction of electric current. Conventionally, in an electric circuit, the direction of electric current is taken as opposite to the direction of theflow of electrons, which are negative charges.
Image
i. If a net charge Q , flows across any cross-section of a conductor in time $\mathbf{t}$, then the current $\mathbf{I}$, through the cross-section is given by which formula?
ii. What is the SI unit of electric charge? It is equivalent to how many numbers of electrons?
iii. The electric current is expressed in which unit? Define the unit used to measure electric current.
OR
If the amount of charge passing through the cell in 4 seconds is 12 C then find the current supplied by a cell.
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Q 39Answer the questions.[Phy-5M]5 Marks
i. A concave mirror of focal length 10 cm can produce a magnified real as well as virtual image of an object placed in front of it. Draw ray diagrams to justify this statement.
ii. An object is placed perpendicular to the principal axis of a convex mirror of focal length 10 cm . The distance of the object from the pole of the mirror is 10 cm . Find the position of the image formed.
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Q 40Answer the questions.[Phy-5M]5 Marks
a. List four characteristics of the image formed by a concave lens of focal length 20 cm when the object is placed at a distance of 40 cm from its optical centre.
b. The size of image of an object by a convex lens of focal length 20 cm is observed to be reduced to $\frac{1}{3} \mathrm{rd}$ of its size. Find the distance of the object from the optical centre of the lens.
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