Identify an involuntary action from the following:
- ✓Regular beating of heart
- BRiding a bicycle
- CPicking up a pencil
- DWalking in a straight line
Answer: A.
View full solution →Question types
MODEL PAPER - 4 [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 - 4 [2026] questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Which one of the following statements is correct about the human circulatory system?
- ABlood transports only oxygen and not
- BHuman heart has five chambers. carbon dioxide.
- ✓Valves ensure that the blood does not flow
- DBoth oxygen-rich and oxygen-deficient backwards. blood gets mixed in the heart.
Answer: C.
View full solution →Which of the following are water intensive crops?
- AWheat and sugarcane
- BWheat and rice
- ✓Sugarcane and rice
- DWheat and gram
Answer: C.
View full solution →Match the following with correct response.
| Column A | Column B |
| (i) Thyroid gland | (a) Testosterone |
| (ii) Pancreas | (b) Thyroxin |
| (iii) Testis | (c) Estrogen |
| (iv) Ovaries | (d) Insulin and glucagon |
- A(i) - (d), (ii) - (a), (iii) - (c), (iv) - (b)
- B(i) - (a), (ii) - (d), (iii) - (b), (iv) - (c)
- C(i) - (c), (ii) - (b), (iii) - (d), (iv) - (a)
- ✓(i) - (b), (ii) - (d), (iii) - (a), (iv) - (c)
Answer: D.
View full solution →Some wastes are given below:
i. Garden waste
ii. Ball point pen refills
iii. Empty medicine bottles made of glass
iv. Peels of fruits and vegetables
v. Old cotton shirt
The non-biodegradable wastes among these are:
i. Garden waste
ii. Ball point pen refills
iii. Empty medicine bottles made of glass
iv. Peels of fruits and vegetables
v. Old cotton shirt
The non-biodegradable wastes among these are:
- A(i), (iii) and (iv)
- B(i), (iv) and (v)
- ✓(ii) and (iii)
- D(i) and (ii)
Answer: C.
View full solution →A solution turns the colour of turmeric to reddish brown. If the same solution is poured on universal indictor, its colour would change to-
- ✓blue
- Bred
- Cviolet
- Dgreen
Answer: A.
View full solution →Which one of the following properties of Carbon is not responsible for its formation of large number of compounds?
- ✓Isomerism
- BCatenation
- CTetravalency
- DAllotropy
Answer: A.
View full solution →
- ✓Ductility
- BSonorous
- CConductivity
- DMalleability
Answer: A.
View full solution →Match the following with the correct response:
| Column A | Column B |
| (i) Copper is used in electrical appliances | (a) Hydrogen sulphide |
| (ii) Sodium is very reactive | (b) Good conductor |
| (iii) Silver is tarnished | (c) Graphite |
| (iv) A non-metal and a good conductor | (d) Stored in kerosene |
- ✓(i) - (b), (ii) - (d), (iii) - (a), (iv) - (c)
- B(i) - (d), (ii) - (a), (iii) - (c), (iv) - (b)
- C(i) - (c), (ii) - (b), (iii) - (d), (iv) - (a)
- D(i) - (a), (ii) - (c), (iii) - (b), (iv) - (d)
Answer: A.
View full solution →Copper utensils slowly lose their shiny brown surface and gain a green coat on prolonged exposure to atmospheric air. This is due to the formation of a coating of
- ACopper sulphate
- BCupric oxide
- CCuprous oxide
- ✓Copper carbonate
Answer: D.
View full solution →Assertion (A): The waste we generate daily may be biodegradable or non-biodegradable.
Reason (R): The waste generated, if not disposed off properly may cause serious environmental problems.
Reason (R): The waste generated, if not disposed off properly may cause serious environmental problems.
Assertion (A): Offsprings produced by asexual reproduction are genetically similar to the parents.
Reason (R): Asexual reproduction involves a single parent.
Reason (R): Asexual reproduction involves a single parent.
Assertion (A): Strength of the acid or base decreases with dilution.
Reason(R): Ionization of an acid or a base increases with dilution.
Reason(R): Ionization of an acid or a base increases with dilution.
Draw a diagram of neuron and name and label the part
a. where information is acquired,
b. through which information travels as an electric impulse, and
c. where the electric impulse must be converted into a chemical signal for onward transmission.
a. where information is acquired,
b. through which information travels as an electric impulse, and
c. where the electric impulse must be converted into a chemical signal for onward transmission.
The improvement in our lifestyle has led to the generation of large amount of waste material. List two reasons to justify this statement.
How can you help in reducing the problem of waste disposal? Give any two methods
a. Name the reproductive and non-reproductive parts of bread mould (Rhizopus).
b. List any two advantages of vegetative propagation.
b. List any two advantages of vegetative propagation.
a. If you have phenolphthalein as an indicator, how will you test for acid and base?
b. What will be the colour of a blue litmus paper on bringing it in contact with a drop of dil. NaOH ?
b. What will be the colour of a blue litmus paper on bringing it in contact with a drop of dil. NaOH ?
a. Draw a diagram of human alimentary canal and label - gall bladder, pancreas, liver and small intestine on it.
b. Give two reasons to explain why absorption of digested food occurs mainly in the small intestine.
b. Give two reasons to explain why absorption of digested food occurs mainly in the small intestine.
A green stemmed tomato plant denoted by (GG) is crossed with a tomato plant with purple stem denoted by (gg).
a. What colour of the stem would you expect in their $F_{1}$ progeny?
b. In what ratio would you find the green and purple coloured stem in plants of $\mathrm{F}_{2}$ progeny?
c. What conclusion can be drawn for the above observations?
View full solution →a. What colour of the stem would you expect in their $F_{1}$ progeny?
b. In what ratio would you find the green and purple coloured stem in plants of $\mathrm{F}_{2}$ progeny?
c. What conclusion can be drawn for the above observations?
A cleaned aluminium foil was placed in an aqueous solution of zinc sulphate. When the aluminium foil was taken out of the zinc sulphate solution after 15 minutes, its surface was found to be coated with a silvery grey deposit. From the given observation, what can be concluded?
On heating blue coloured powder of copper (II) nitrate in a boiling tube, copper oxide (black), oxygen gas and a brown gas X is formed.
i. Write a balanced chemical equation of the reaction.
ii. Identify the brown gas X evolved.
iii. Identify the type of reaction.
iv. What could be the pH range of the aqueous solution of the gas X ?
i. Write a balanced chemical equation of the reaction.
ii. Identify the brown gas X evolved.
iii. Identify the type of reaction.
iv. What could be the pH range of the aqueous solution of the gas X ?
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.
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.
a. Name the hormone secreted by (i) Pituitary, and (ii) Thyroid stating one main function of each. Name the disorder a person is likely to suffer from due to the deficiency of the above mentioned hormones.
b. How is the timing and amount of hormone released regulated? Explain with an example.
b. How is the timing and amount of hormone released regulated? Explain with an example.
a. Name any two bacterial infections that are sexually transmitted. How can they be prevented?
b. List three different ways, other than the one stated in (a) above, that help an individual to avoid unwanted pregnancies.
c. List three advantages for adopting contraceptive measures.
b. List three different ways, other than the one stated in (a) above, that help an individual to avoid unwanted pregnancies.
c. List three advantages for adopting contraceptive measures.
In a balanced chemical reaction, equal number of atoms are present on both sides of reaction. A balanced chemical reaction is based on law of conservation of mass which means that total mass of reactants and products participating in a reaction must be equal. For example, a balanced chemical equation of burning of magnesium in oxygen to form magnesium oxide is written as:
$2 \mathrm{Mg}+\mathrm{O}_{2} \longrightarrow 2 \mathrm{MgO}$
The mass of reactants ( $2 \times 24+32=80$ ) is equal to the mass of products [ $2 \times(24+16)=80$ ].
i. In a reaction, 35 g of reactant, PQ breaks down into 20 g of product, P and an unknown amount of product, Q. Find the amount of product Q.
ii. The solid mercury (II) oxide is heated, and liquid mercury and oxygen gas are produced. Mention balanced chemical reaction.
iii. Which laws are satisfied by a balanced chemical equation?
OR
In the given chemical reaction,
$2 \mathrm{C}_{6} \mathrm{H}_{6(\mathrm{l})}+15 \mathrm{O}_{2(\mathrm{~g})} \longrightarrow \mathrm{mCO}_{2(\mathrm{~g})}+\mathrm{nH}_{2} \mathrm{O}_{(\mathrm{l})}$
Find the values of $m$ and $n$ respectively.
View full solution →$2 \mathrm{Mg}+\mathrm{O}_{2} \longrightarrow 2 \mathrm{MgO}$
The mass of reactants ( $2 \times 24+32=80$ ) is equal to the mass of products [ $2 \times(24+16)=80$ ].
i. In a reaction, 35 g of reactant, PQ breaks down into 20 g of product, P and an unknown amount of product, Q. Find the amount of product Q.
ii. The solid mercury (II) oxide is heated, and liquid mercury and oxygen gas are produced. Mention balanced chemical reaction.
iii. Which laws are satisfied by a balanced chemical equation?
OR
In the given chemical reaction,
$2 \mathrm{C}_{6} \mathrm{H}_{6(\mathrm{l})}+15 \mathrm{O}_{2(\mathrm{~g})} \longrightarrow \mathrm{mCO}_{2(\mathrm{~g})}+\mathrm{nH}_{2} \mathrm{O}_{(\mathrm{l})}$
Find the values of $m$ and $n$ respectively.
Refer to the given table regarding results of $\mathrm{F}_{2}$ generation of Mendelian cross.
i. What would be the phenotype of $F_{1}$ generation regarding given data of $F_{2}$ generation?
ii. What would be the genotype of parental generation regarding the given result of $\mathrm{F}_{2}$ generation?
iii. If a plant with wrinkled and green coloured seeds $(\mathrm{S})$ is crossed with the plant having wrinkled and yellow coloured seeds (R), what will be the probable phenotype of offspring?
OR
What will result when plant YyRr is self-pollinated?
View full solution →| Plants with round and yellow coloured seeds (P) | 315 |
| Plants with round and green coloured seeds (Q) | 108 |
| Plants with wrinkled and yellow coloured seeds (R) | 101 |
| Plants with wrinkled and green coloured seeds (S) | 32 |
i. What would be the phenotype of $F_{1}$ generation regarding given data of $F_{2}$ generation?
ii. What would be the genotype of parental generation regarding the given result of $\mathrm{F}_{2}$ generation?
iii. If a plant with wrinkled and green coloured seeds $(\mathrm{S})$ is crossed with the plant having wrinkled and yellow coloured seeds (R), what will be the probable phenotype of offspring?
OR
What will result when plant YyRr is self-pollinated?
a. State any two reasons for carbon forming a large number of compounds. Why does carbon form compounds
i. mainly by covalent bonding?
ii. having low melting and boiling points?
b. With the help of balanced chemical equations, explain what happens when
i. a piece of sodium is added to ethanol?
ii. ethanol burns in the presence of oxygen?
i. mainly by covalent bonding?
ii. having low melting and boiling points?
b. With the help of balanced chemical equations, explain what happens when
i. a piece of sodium is added to ethanol?
ii. ethanol burns in the presence of oxygen?
In the following diagram showing dispersion of white light by a glass prism, the colours $\mathbf{P}$ and $\mathbf{Q}$ respectively are-
- ✓Violet and Red
- BOrange and Green
- CRed and Blue
- DRed and Violet
Answer: A.
View full solution →Which of the following statement is/are true?
A. The speed of all colours is the same in air or vacuum.
B. The speed of all colours is different in denser media.
C. Speed of light in air is $3 \times 10^{8} \mathrm{~ms}^{-1}$.
D. Refractive index has no unit.
A. The speed of all colours is the same in air or vacuum.
B. The speed of all colours is different in denser media.
C. Speed of light in air is $3 \times 10^{8} \mathrm{~ms}^{-1}$.
D. Refractive index has no unit.
- AA and B
- BB and D
- ✓All of these
- DA, B and C
Answer: C.
View full solution →Assertion (A): A neutral body may experience a net nonzero magnetic force.
Reason(R): The net charge on a current-carrying wire is zero, but it can experience a force in a magnetic field.
Reason(R): The net charge on a current-carrying wire is zero, but it can experience a force in a magnetic field.
In the given circuit, find:
a. Total resistance of the network of resistors
b. Current through ammeter A, and
c. Potential difference across $3 \Omega$ and $6 \Omega$ resistors
View full solution →a. Total resistance of the network of resistors
b. Current through ammeter A, and
c. Potential difference across $3 \Omega$ and $6 \Omega$ resistors
a. Write the mathematical expression for Joule's law of heating.
b. Compute the heat generated while transferring 96000 coulomb of charge in two hours through a potential difference of 40 V .
b. Compute the heat generated while transferring 96000 coulomb of charge in two hours through a potential difference of 40 V .
Write the conditions for observing a rainbow. Show, by drawing a suitable diagram, how one understands the formation of a rainbow?
a. Draw the pattern of magnetic field lines around a bar magnet. Mark the position of North Pole, South Pole and the places where the magnetic field is strongest.
b. Why do the magnetic field lines not intersect each other?
b. Why do the magnetic field lines not intersect each other?
A camera in many ways is similar to the human eye, still, there are some basic differences in image formation between the two. Explain.
Find the direction of magnetic field due to a current carrying circular coil held:
i. Vertically in North-South plane and an observer looking it from East sees the current to flow in anticlockwise direction.
ii. Vertically in East-West plane and an observer looking it from South sees the current to flow in anti-clockwise direction.
iii. Horizontally and an observer looking at it from below and see the current flowing in clockwise direction.
i. Vertically in North-South plane and an observer looking it from East sees the current to flow in anticlockwise direction.
ii. Vertically in East-West plane and an observer looking it from South sees the current to flow in anti-clockwise direction.
iii. Horizontally and an observer looking at it from below and see the current flowing in clockwise direction.
a. Define power of a lens and write its SI unit. Name the type of lens whose power is negative.
b. A convex lens forms a real and inverted image of finite size at a distance of 50 cm from it. Where is the object placed in front of the lens? Give all possible positions of the object stating reason in each case.
c. Draw labelled ray diagram for any one position of the object mentioned in (b) above.
b. A convex lens forms a real and inverted image of finite size at a distance of 50 cm from it. Where is the object placed in front of the lens? Give all possible positions of the object stating reason in each case.
c. Draw labelled ray diagram for any one position of the object mentioned in (b) above.
i. Draw a ray diagram to show the path of the refracted ray in each of the following cases: A ray of light incident on a concave lens
1. parallel to its principal axis, and
2. is directed towards its principal focus.
ii. A 4 cm tall object is placed perpendicular to the principal axis of convex lens of focal length 24 cm . The distance of object from the lens is 16 cm . Find the position and size of image formed.
1. parallel to its principal axis, and
2. is directed towards its principal focus.
ii. A 4 cm tall object is placed perpendicular to the principal axis of convex lens of focal length 24 cm . The distance of object from the lens is 16 cm . Find the position and size of image formed.
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