Select from the following a plant hormone which promotes cell division.
- AAbscissic Acid
- ✓Cytokinins
- CAuxins
- DGibberellins
Answer: B.
View full solution →Question types
MODEL PAPER - 3 [2026] question types
45 questions across 18 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
45
Questions
18
Question groups
5
Question types
01
M.C.Q
7 Q→02M.C.Q-[Che-1M]
7 Q→03Assertion - Reasoning (1 Marks)
2 Q→04Assertion - Reasoning [Che-1 M]
1 Q→05[2 Mark Questions]
4 Q→06Answer the questions.[Che-2M]
1 Q→07[3 Mark Questions]
2 Q→08Answer the questions.[Che-3M]
3 Q→09[5 marks Questions]
2 Q→10case /data -based [Che-4M]
1 Q→11case /data -based (4 Marks)
1 Q→12Answer the questions.[Che-5M]
2 Q→13M.C.Q-[Phy-1M]
2 Q→14Assertion - Reasoning [Phy-1 M]
1 Q→15Answer the questions.[Phy-2M]
3 Q→16Answer the questions.[Phy-3M]
3 Q→17case /data -based [Phy-4M]
1 Q→18Answer the questions.[Phy-5M]
2 Q→Sample Questions
MODEL PAPER - 3 [2026] questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Select from the following the correct statement about tropic movement in plants:
- AIt is due to stimulus of touch and
- BIt does not depend upon the direction of temperature. stimulus received.
- CIt is observed only in roots and not in stems
- ✓It is a growth related movement.
Answer: D.
View full solution →What will happen if the deer are missing in the following food chain?
Grass $\rightarrow$ Deer $\rightarrow$ Tiger
Grass $\rightarrow$ Deer $\rightarrow$ Tiger
- AThe population of tigers will increase
- ✓The tigers will die
- CThe amount of grass will decrease
- DThe tigers will start eating grass
Answer: B.
View full solution →Match the following with correct response.
| Column A | Column B |
| (i) Central nervous system | (a) Brain |
| (ii) Peripheral nervous system | (b) Sympathetic nervous system |
| (iii) Autonomic nervous system | (c) Cranial and spinal nerves |
| (iv) Reflex action | (d) Reflex arc |
- A(i) - (c), (ii) - (b), (iii) - (d), (iv) - (a)
- ✓(i) - (a), (ii) - (c), (iii) - (b), (iv) - (d)
- C(i) - (b), (ii) - (d), (iii) - (a), (iv) - ©
- D(i) - (d), (ii) - (a), (iii) - (c), (iv) - (b)
Answer: B.
View full solution →Disposable plastic plates should not be used because:
- AThey are made of materials with light weight.
- BThey are made of biodegradable materials.
- CThey are made of toxic materials.
- ✓They are made of non-biodegradable material.
Answer: D.
View full solution →Which of the given statement is correct or wrong:
Statement A: Acetic acid freezes at 290 K .
Statement B: Acetic is also called as glacial acetic acid.
Statement A: Acetic acid freezes at 290 K .
Statement B: Acetic is also called as glacial acetic acid.
- AStatement B is True; Statement A is false.
- ✓Statement A is true; Statement B is false.
- CNeither Statement A nor Statement B is
- DBoth the statements A and B are true. true.
Answer: B.
View full solution →The name of the salt used to remove permanent hardness of water is:
- ACalcium sulphate hemihydrate $\left(\mathrm{CaSO}_{4}\right.$.$\frac{1}{2}H_2 O)$
- ✓Sodium carbonate decahydrate ( $\mathrm{Na}_{2} \mathrm{CO}_{3} \cdot 10 \mathrm{H}_{2} \mathrm{O}$ )
- CSodium hydrogen carbonate $\left(\mathrm{NaHCO}_{3}\right)$
- DSodium chloride ( NaCl )
Answer: B.
View full solution →Identify a group of the unsaturated hydrocarbons from the following:
- ✓Butyne, Ethene, Propyne
- BPropane, Ethene, Butyne
- CCyclohexane, Methane, Ethane
- DEthene, Propane, Hexane
Answer: A.
View full solution →During smelting, an additional substance is added which combines with impurities to form a fusible product known as:
- AMud
- BGangue
- CFlux
- ✓Slag
Answer: D.
View full solution →Match the following with the correct response:
| Column A | Column B |
| (i) Catenation | (a) Butene |
| (ii) Alkane | (b) Carbon compounds |
| (iii) Alkene | (c) Ethyne |
| (iv) Alkyne | (d) Ethane |
- A(i) - (c), (ii) - (b), (iii) - (d), (iv) - (a)
- ✓(i) - (b), (ii) - (d), (iii) - (a), (iv) - (c)
- C(i) - (d), (ii) - (a), (iii) - (c), (iv) - (b)
- D(i) - (a), (ii) - (c), (iii) - (b), (iv) - (d)
Answer: B.
View full solution → Assertion (A): Producers are capable of using light energy from the sun to make food available in an ecosystem.
Reason (R): All food chains in an ecosystem start with a producer.
Reason (R): All food chains in an ecosystem start with a producer.
Assertion (A): Amoeba takes in food using finger like extensions of the cell surface.
Reason (R): In all unicellular organisms, the food is taken in by the entire cell surface.
Reason (R): In all unicellular organisms, the food is taken in by the entire cell surface.
Assertion (A): When common salt is kept open, it absorbs moisture from the air.
Reason (R): Common salt contains magnesium chloride.
Reason (R): Common salt contains magnesium chloride.
Name a plant growth hormone synthesized at the shoot tip. Explain its effect on the growth of a plant in response to light.
What is meant by trophic level in a food chain? Construct a terrestrial food chain with four trophic levels. The energy flow in a food chain is always unidirectional. Why?
a. Construct a food chain of four trophic levels operating in a grassland. If the energy available to the organisms of $4^{\text {th }}$ trophic level is 75 joules, how much energy was available with the organisms of the $2^{\text {nd }}$ trophic level for transfer to the next trophic level? Justify your answer.
b. Why is the flow of energy unidirectional in a food chain?
View full solution →b. Why is the flow of energy unidirectional in a food chain?
Define the term pollination. Differentiate between self-pollination and cross-pollination. What is the significance of pollination?
You have been provided with two test tubes. One of them contains distilled water and the other contain acid solution. How will you find out which of the test tube contains water without testing the contents of the test tube?
i. Write the correct sequence of steps followed during journey of oxygen rich blood from lungs to various organs of human body.
ii. What happens when the system of blood vessels develop a leak?
ii. What happens when the system of blood vessels develop a leak?
Name the plant Mendel used for his experiment. What type of progeny was obtained by Mendel in $F_{1}$ and $F_{2}$ generations when he crossed the tall and short plants? Write the ratio he obtained in $\mathrm{F}_{2}$ generation plants.
View full solution →The atomic number of an element is 20 . Write its electronic configuration. State whether this element is a metal or a non-metal. What is its valency? Write the name and formula of the compound which this element forms with chlorine.
Define a chemical reaction. State four observations which help us to determine that a chemical reaction has taken place. Write one example of each of the observations with a balanced chemical equation.
Identify the type of reactions taking place in each of the following cases and write the balanced chemical equation for the reactions.
a. Zinc reacts with silver nitrate to produce zinc nitrate and silver.
b. Potassium iodide reacts with lead nitrate to produce potassium nitrate and lead iodide.
a. Zinc reacts with silver nitrate to produce zinc nitrate and silver.
b. Potassium iodide reacts with lead nitrate to produce potassium nitrate and lead iodide.
With the help of labelled diagram explain the general scheme to illustrate how nervous impulses travel in the body?
i. Name the mode of reproduction of the following organisms and state the important feature of each mode :
a. Planaria
b. Hydra
c. Rhizopus
ii. We can develop new plants from the leaves of Bryophyllum. Comment.
iii. List two advantages of vegetative propagation over other modes of reproduction.
a. Planaria
b. Hydra
c. Rhizopus
ii. We can develop new plants from the leaves of Bryophyllum. Comment.
iii. List two advantages of vegetative propagation over other modes of reproduction.
Those reactions in which two compounds react by an exchange of ions to form two new compounds are called double displacement reactions. A double displacement reaction usually occurs in solution and one of the products, being insoluble, precipitate out (separates as a solid). Any reaction in which an insoluble solid (called precipitate) is formed that separates from the solution is called a precipitation reaction. The reaction in which acid or acidic oxide reacts with base or basic oxide to form salt and water is called neutralisation reaction. For example, $2 \mathrm{NaOH}+\mathrm{H}_{2} \mathrm{SO}_{4} \longrightarrow \mathrm{Na}_{2} \mathrm{SO}_{4}+\mathrm{H}_{2} \mathrm{O}$
i. When hydrogen sulphide gas is passed through a blue solution of copper sulphate, a black precipitate of copper sulphide is obtained and the sulphuric acid so formed remains in the solution. Mention the type of reaction.
ii. Balance the following chemical reaction.
$\mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2(\mathrm{aq})}+\mathrm{KI}_{(\mathrm{aq})} \longrightarrow \mathrm{PbI}_{2(\mathrm{~s})}+\mathrm{KNO}_{3(\mathrm{aq})}$
iii. Barium chloride in reaction with ammonium sulphate forms barium sulphate and ammonium chloride. Which type of chemical reaction represents in this reaction?
OR
Identify A in the following reaction.
$\mathrm{AlCl}_{3(\mathrm{aq})}+3 \mathrm{NH}_{4} \mathrm{OH}_{(\mathrm{aq})} \longrightarrow \mathrm{A}+3\mathrm{NH}_{4} \mathrm{Cl}_{(\mathrm{aq})}$
View full solution →i. When hydrogen sulphide gas is passed through a blue solution of copper sulphate, a black precipitate of copper sulphide is obtained and the sulphuric acid so formed remains in the solution. Mention the type of reaction.
ii. Balance the following chemical reaction.
$\mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2(\mathrm{aq})}+\mathrm{KI}_{(\mathrm{aq})} \longrightarrow \mathrm{PbI}_{2(\mathrm{~s})}+\mathrm{KNO}_{3(\mathrm{aq})}$
iii. Barium chloride in reaction with ammonium sulphate forms barium sulphate and ammonium chloride. Which type of chemical reaction represents in this reaction?
OR
Identify A in the following reaction.
$\mathrm{AlCl}_{3(\mathrm{aq})}+3 \mathrm{NH}_{4} \mathrm{OH}_{(\mathrm{aq})} \longrightarrow \mathrm{A}+3\mathrm{NH}_{4} \mathrm{Cl}_{(\mathrm{aq})}$
A student crossed pea plants having round and yellow seeds with pea plants having wrinkled and green seeds. He found that only one type of seeds were produced in the $F_{1}$ generation. When these $F_{1}$ generation pea plants were self - pollinated with each other, then in addition to the seed type of $\mathrm{F}_{1}$ generation, some new types of seed combinations were also obtained in the $\mathrm{F}_{2}$ generation.
i. Write any two contrasting visible characters other than the ones shown above, taken by Mendel for his experiment.
ii. Mention the dominant traits observed in $\mathrm{F}_{1}$ generation.
iii. Give reason why the traits which were not visible in the seeds of $F_{1}$ generation reappeared in the seeds of $F_{2}$ generation. Write the ratio of different types of seeds obtained in $F_{2}$ generation in this case.
OR
What is meant by the terms (I) dominant, and (II) recessive traits? Explain.
View full solution →i. Write any two contrasting visible characters other than the ones shown above, taken by Mendel for his experiment.
ii. Mention the dominant traits observed in $\mathrm{F}_{1}$ generation.
iii. Give reason why the traits which were not visible in the seeds of $F_{1}$ generation reappeared in the seeds of $F_{2}$ generation. Write the ratio of different types of seeds obtained in $F_{2}$ generation in this case.
OR
What is meant by the terms (I) dominant, and (II) recessive traits? Explain.
a. Distinguish between esterification and saponification reactions with the help of chemical equations for each.
b. With a labelled diagram describe in brief an activity to show the formation of an ester.
b. With a labelled diagram describe in brief an activity to show the formation of an ester.
i. What are soaps? Explain the mechanism of cleansing action of soap with the help of a labelled diagram.
ii. Detergents are better than soaps. Justify.
ii. Detergents are better than soaps. Justify.
In the following diagram the correctly marked angles are:
- A$\angle \mathrm{A}, \angle \mathrm{r}$ and $\angle \mathrm{D}$
- B$\angle \mathrm{i}, \angle \mathrm{A}$ and $\angle \mathrm{D}$
- C$\angle \mathrm{A}, \angle \mathrm{i}$ and $\angle \mathrm{e}$
- ✓
Answer: D.
View full solution →Find the incorrect statement:
A. Convex mirrors are used by the dentist to see the large images of teeth of patients.
B. Convex mirrors are used as rear-view mirrors in cars, motorcycles, scooters, etc
C. Concave mirrors are used for shaving purpose.
D. Concave mirrors are used by doctors to focus light inside the ear or inside the mouth for medical examination.
A. Convex mirrors are used by the dentist to see the large images of teeth of patients.
B. Convex mirrors are used as rear-view mirrors in cars, motorcycles, scooters, etc
C. Concave mirrors are used for shaving purpose.
D. Concave mirrors are used by doctors to focus light inside the ear or inside the mouth for medical examination.
- A(B)
- B(C)
- ✓(A)
- D(D)
Answer: C.
View full solution → Assertion (A): In electric circuits, wires carrying currents in opposite directions are often twisted together.
Reason (R): If the wire are not twisted together, the combination of the wires forms a current loop. The magnetic field generated by the loop might affect adjacent circuits or components.
Reason (R): If the wire are not twisted together, the combination of the wires forms a current loop. The magnetic field generated by the loop might affect adjacent circuits or components.
In the experiment to study the dependence of current $(\mathrm{I})$ on the potential difference $(\mathrm{V})$ across a resistor, a student obtained a graph as shown.
i. What does the graph depict about the dependence of current on the potential difference?
ii. Find the current that flows through the resistor when the potential difference across it is 2.5 V .
View full solution →i. What does the graph depict about the dependence of current on the potential difference?
ii. Find the current that flows through the resistor when the potential difference across it is 2.5 V .
An electric heater rated 1100 W operates at 220 V . Calculate (i) its resistance, and (ii) the current drawn by it.
Draw a ray diagram showing the path of rays of light when it enters with oblique incidence:
a. from air to water
b. from water to air
a. from air to water
b. from water to air
i. A straight cylindrical conductor is suspended with its axis perpendicular to the magnetic field of a horse-shoe magnet. The conductor gets displaced towards left when a current is passed through it. What will happen to the displacement of the conductor if the
1. current through it is increased?
2. horse-shoe magnet is replaced by another stronger horse-shoe magnet?
3. direction of current through it is reversed?
ii. Name and state the rule for determining the direction of force on a current carrying conductor in a magnetic field
1. current through it is increased?
2. horse-shoe magnet is replaced by another stronger horse-shoe magnet?
3. direction of current through it is reversed?
ii. Name and state the rule for determining the direction of force on a current carrying conductor in a magnetic field
A student sitting at the back of the classroom cannot read clearly the letters written on the backboard. What advice will a doctor give to her?
What is a Solenoid? Draw the pattern of the magnetic field lines around a current carrying solenoid. Mark on the pattern the region where the magnetic field is uniform.
If two or more resistances are connected in such a way that the same potential difference gets applied to each of them, then they are said to be connected in parallel.
The current flowing through the two resistances in parallel is, however, not the same. When we have two or more resistances joined in parallel to one another, then the same current gets additional paths to flow and the overall resistance decreases.
i. Three resistances, $2 \Omega, 6 \Omega$ and $8 \Omega$ are connected in parallel, then what will be the equivalent resistance?
ii. A wire of resistance $12 \Omega$ is cut into three equal pieces and then twisted their ends together, then what will be the equivalent resistance?
iii. Three resistances are connected as shown. Calculate the equivalent resistance between $A$ and $B$
OR
Find the current in each resistance.
View full solution →The current flowing through the two resistances in parallel is, however, not the same. When we have two or more resistances joined in parallel to one another, then the same current gets additional paths to flow and the overall resistance decreases.
i. Three resistances, $2 \Omega, 6 \Omega$ and $8 \Omega$ are connected in parallel, then what will be the equivalent resistance?
ii. A wire of resistance $12 \Omega$ is cut into three equal pieces and then twisted their ends together, then what will be the equivalent resistance?
iii. Three resistances are connected as shown. Calculate the equivalent resistance between $A$ and $B$
OR
Find the current in each resistance.
i. State laws of reflection of light.
ii. An object of height 5.0 cm is placed at 15 cm in front of a concave mirror of focal length 10 cm . At what distance from the mirror should a screen be placed, so that a focussed image is obtained on it? Find the height of the image.
ii. An object of height 5.0 cm is placed at 15 cm in front of a concave mirror of focal length 10 cm . At what distance from the mirror should a screen be placed, so that a focussed image is obtained on it? Find the height of the image.
The variation of image distance (v) with object distance (u) for a convex lens is given in the following observation table. Analyse it and answer the questions that follow:
i. Without calculation, find the focal length of the convex lens. Justify your answer.
ii. Which observation is not correct? Why? Draw ray diagram to find the position of the image formed for this position of the object.
iii. Find the approximate value of magnification for $u=-30 \mathrm{~cm}$.
View full solution →| S.NO. | Object distance (u) cm | Image distance (v) cm |
| 1 | -150 | +30 |
| 2 | -75 | +37.5 |
| 3 | -50 | +50 |
| 4 | -37.5 | +75 |
| 5 | -30 | +150 |
| 6 | -15 | +37.5 |
i. Without calculation, find the focal length of the convex lens. Justify your answer.
ii. Which observation is not correct? Why? Draw ray diagram to find the position of the image formed for this position of the object.
iii. Find the approximate value of magnification for $u=-30 \mathrm{~cm}$.
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