Previous year questions

Work down from class to subject to year to chapter. Only options that actually have questions behind them are offered — Khojo Papers never lists a year it has nothing for.

1Class

2Subject

3Year

391 previous-year questions

ISC Class XII 2025
Class 12 · Mathematics
(iii) Show that points P(-2, 3, 5) Q(1, 2, 3) and R(7, 0, -1) are collinear. [1] Observe the two graphs, Graph 1 and Graph 2 given below and answer the questions that follow. (iv) Two honeybees are flying parallel to each other in the garden to collect the nectar. The path traced by Y Y  ( ) ( ) the bees is given r = i + 2 j + 3k + λ 2i + 3 j + 4 k . X (0, 0) X (0, 0) Graph 1 Graph 2
Which one of the graphs represents y = sin-1x?
1 markShort answer
ICSE Class X 2025
Class 10 · Biology
15] Select the correct answers to the questions from the given options. (Do not copy the questions, write the correct answer only).
Assertion (A): Deficiency of antidiuretic hormone causes an increase in urination.
Reason (R): Antidiuretic hormone acts on the kidney to reabsorb water from the kidney tubules.
MCQ
ICSE Class X 2025
Class 10 · Biology
In the last century, the human population has increased tremendously. Death rate has reduced and
life expectancy has increased. This rapid growth has placed significant pressure on resources. Global
cooperation is needed for environmental preservation.
Overpopulation
(a) Mention any one reason for reduction in the death rate.
(b) Name any one resource that is under pressure due to population explosion.
2 marksShort answer
ICSE Class X 2025
Class 10 · Geography
On the outline map of India provided:
Mark and label the Standard Meridian of India.
1 markMap based
ICSE Class X 2025
Class 10 · Biology
15] Select the correct answers to the questions from the given options. (Do not copy the questions, write the correct answer only).
Ajay and Vijay are siblings. Ajay can roll his tongue while Vijay cannot. What is the genotype of their
parents?
MCQ
ISC Class XII 2025
Class 12 · English
Answer subparts (i), (ii) and (iii).
Rewrite the following sentences according to the instructions given after each of them in brackets.
5 marksMCQ
ISC Class XII 2025
Class 12 · Economics
Refer to the diagram given below and choose the correct statement.
1 markMCQ
ICSE Class X 2025
Class 10 · Physics
(a) Which of the two, alternating current or direct current, produces a varying magnetic field when it
flows through a conductor?
(b) State the frequency of the alternating current supply in India.
2 marksShort answer
ICSE Class X 2025
Class 10 · Geography
(a) Name the Iron and Steel industry located at Chhattisgarh.
(b) From where does the industry named by you above get its supply of the following?
1. Iron ore
2. Coal
3 marksShort answer
ISC Class XII 2025
Class 12 · Economics
Factor income received from rest of the world 15
OR
Short answer
ICSE Class X 2025
Class 10 · Biology
Vineet’s day begins with a cup of piping hot coffee. Caffeine is a stimulant present in coffee which
increases the circulation of Adrenaline in the body. Vineet feels refreshed, alert and focussed.
Coffee
(a) Name the organ that is stimulated by caffeine which makes Vineet alert and focussed.
(b) Give the collective term for the protective membranes of the organ mentioned in (a).
(c) Which part of the autonomic nervous system increases the secretion of Adrenaline?
3 marksShort answer
ICSE Class X 2025
Class 10 · Geography
Give a reason for each of the following.
(a) Iron ore is called a versatile mineral.
(b) Windmills set up on agricultural lands are beneficial to farmers.
(c) Coal is the most preferred source of energy in Indian industries.
3 marksShort answer
ISC Class XII 2025
Class 12 · Mathematics
Evaluate: ∫ ( log x ) dx
 x -3 0 
symmetric matrix? Question 9
4 marksNumerical
ISC Class XII 2025
Class 12 · Economics
Suppose the total receipts are `1045 Cr. and total payments are `1526 Cr. in the Balance of Payments
account of India.
In the above context, which one of the following can improve the Balance of Payments of India?
1 markMCQ
ISC Class XII 2025
Class 12 · English
20] Write a composition (in approximately 400 - 450 words) on any one of the following subjects. (You are reminded that you will be rewarded for the orderly and coherent presentation of the matter, use of appropriate style and general accuracy of spelling, punctuation and grammar.)
The children’s library in your locality was in a neglected condition. You and your friends visited it
recently and decided to do something about it. What did you see there and how did you bring about
a significant change? Describe the excitement on the reopening of the library and how you felt when
many children began to visit it eventually.
Short answer
ISC Class XII 2025
Class 12 · Physics
But it is observed that they are attracting each other. (A) In questions (i) to (vii) given below, choose the What change should the student make for the wires correct alternative (a), (b), (c) or (d). to repel each other? [1]
Given below are two statements marked, Assertion
and Reason. Read the two statements and choose E
the correct option. Figure 4 Figure 5
Assertion: Diffraction of light is difficult to observe
in everyday situations but can be observed in (a) In which of the two combinations, emf of the
laboratory conditions. battery is greater?
Reason: To produce diffraction of waves, size of an (b) When a resistor ‘R’ is connected between the
obstacle must be comparable to the wavelength of terminals P and Q, I1 and I2 are the currents
the waves. flowing through ‘R’ in Figure 4 and Figure 5
(a) Both Assertion and Reason are true and Reason I
respectively. Obtain the ratio 1 .
is the correct explanation for Assertion. I2
(b) Both Assertion and Reason are true but Reason
Assertion–reason
ICSE Class X 2025
Class 10 · Biology
Mention any two functions of amniotic fluid.
2 marksShort answer
ICSE Class X 2025
Class 10 · Geography
(a) How is Biogas formed?
(b) Mention any one advantage of Biogas over other non-conventional energy resources.
2 marksShort answer
ISC Class XII 2025
Class 12 · Physics
5] (3) State how a nuclear reactor can be shut down in
A semiconductor diode has two types of
USEFUL CONSTANTS AND RELATIONS
semiconducting materials: ‘P’ type and ‘N’ type.
1. Speed of light c = 3 × 108 ms-1
What is the difference between them? in vacuum
Short answer
ISC Class XII 2025
Class 12 · Economics
Monopolistic competition is a blend of perfect competition and monopoly. Discuss the statement by
giving two reasons.
Short answer