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CBSE Class 10 Maths (Basic) 2026 — Paper 430/2/1

80 marks · 3 hours · 38 questions (44 with the OR choices)

1 of its 44 questions has been set in other papers too (each one says where); the other 43 are only in this paper.

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Questions 1–20 · 1 mark each

  1. Q1 1 mark
    The HCF of the smallest prime number and the smallest 3-digit number is . The respective values of and are :
    1. (a)
    2. (b)
    3. (c)
    4. (d)
    Show answer
    (b)
    Step-by-step solution →
  2. Q2 1 mark
    Which of the following statements is true for HCF and LCM of two distinct natural numbers and ?
    1. (i)HCF is always greater than LCM.
    2. (ii)HCF is a factor of LCM.
    3. (iii)LCM is a factor of HCF.
    1. (a)(i) only
    2. (b)(i) and (iii)
    3. (c)(i) and (ii)
    4. (d)(ii) only
    Show answer
    (d) (ii) only
    Step-by-step solution →
  3. Q3 1 mark
    Which of the following system of equations has a unique solution ?
    1. (a)
    2. (b)
    3. (c)
    4. (d)
    Show answer
    (c)
    Step-by-step solution →
  4. Q4 1 mark
    If the equation has real and equal roots, then which of the following is true ?
    1. (a)
    2. (b)
    3. (c)
    4. (d)
    Show answer
    (b)
    Step-by-step solution →
  5. Q5 1 mark
    If is a root of the equation , then :
    1. (a)
    2. (b)
    3. (c)
    4. (d)
    Show answer
    (d)
    Step-by-step solution →
  6. Q6 1 mark
    In the given figure, the length of hypotenuse of the right is :
    y x B (0, 4) O (0, 0) A (3, 0)
    1. (a) units
    2. (b) units
    3. (c) units
    4. (d) units
    Show answer
    (c) units
    Step-by-step solution →
  7. Q7 1 mark
    In the given figure, if , then which of the following statements is correct ?
    M E O S U
    1. (a)
    2. (b)
    3. (c)
    4. (d)
    Show answer
    (d)
    Step-by-step solution →
  8. Q8 1 mark
    In the given figure, if , then :
    90° 60° A C P D
    1. (a)
    2. (b)
    3. (c)
    4. (d)
    Show answer
    (b)
    Step-by-step solution →
  9. Q9 1 mark
    The graph of a quadratic polynomial is shown in the figure. The sum and product of zeroes of the polynomial respectively are :
    −2 −1 0 1 2 3 y x
    1. (a) and
    2. (b) and
    3. (c) and
    4. (d) and
    Show answer
    (b) and
    Step-by-step solution →
  10. Q10 1 mark
    The sum of the age (in years) of a father and three times the age of his daughter is . If the age of the father is years and that of his daughter is years, the equation representing the given information is :
    1. (a)
    2. (b)
    3. (c)
    4. (d)
    Show answer
    (c)
    Step-by-step solution →
  11. Q11 1 mark
    The term of the A.P. is :
    1. (a)
    2. (b)
    3. (c)
    4. (d)
    Show answer
    (b)
    Step-by-step solution →
  12. Q12 1 mark
    The value of is :
    1. (a)
    2. (b)greater than
    3. (c)equal to the value of
    4. (d)
    Show answer
    (a)
    Step-by-step solution →
  13. Q13 1 mark
    One of the possible values of , for which , is :
    1. (a)
    2. (b)
    3. (c)
    4. (d)
    Show answer
    (a)
    Step-by-step solution →
  14. Q14 1 mark
    At an instant, the length of shadow of a stick is found to be times the length of the stick as shown in the figure below. The Sun's altitude at that instant is :
    Stick Shadow
    1. (a)
    2. (b)
    3. (c)
    4. (d)
    Show answer
    (a)
    Step-by-step solution →
  15. Q15 1 mark
    The largest possible right circular cone is carved out of a solid hemisphere of radius '' as shown in the figure below. The slant height of the cone is :
    r
    1. (a)
    2. (b)
    3. (c)
    4. (d)
    Show answer
    (c)
    Step-by-step solution →
  16. Q16 1 mark
    If for a frequency distribution, the mean is times the median, then mode is :
    1. (a)equal to median
    2. (b) times the median
    3. (c)equal to mean
    4. (d) times the mean
    Show answer
    (b) times the median
    Step-by-step solution →
  17. Q17 1 mark
    Consider the given data : The difference of lower limit of the median class and upper limit of the modal class is :
    Class0 - 2020 - 4040 - 6060 - 8080 - 100100 - 120
    Frequency153050633532
    1. (a)
    2. (b)
    3. (c)
    4. (d)
    Show answer
    (b)
    Step-by-step solution →
  18. Q18 1 mark
    An unbiased die is thrown once. The probability of getting an even prime number greater than 2 is :
    1. (a)
    2. (b)
    3. (c)
    4. (d)
    Show answer
    (d)
    Step-by-step solution →
  19. Q19 1 mark
    Select the correct answer from the codes (a), (b), (c) and (d) as given below.

    Assertion (A): The probability of a certain event is .

    Reason (R): The sum of probabilities of all elementary events of an experiment is .

    1. (a)Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
    2. (b)Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
    3. (c)Assertion (A) is true, but Reason (R) is false.
    4. (d)Assertion (A) is false, but Reason (R) is true.
    Show answer
    (a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
    Step-by-step solution →
  20. Q20 1 mark
    Select the correct answer from the codes (a), (b), (c) and (d) as given below.

    Assertion (A): is an irrational number.

    Reason (R): The sum of two irrational numbers is always an irrational number.

    1. (a)Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
    2. (b)Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
    3. (c)Assertion (A) is true, but Reason (R) is false.
    4. (d)Assertion (A) is false, but Reason (R) is true.
    Show answer
    (c) Assertion (A) is true, but Reason (R) is false.
    Step-by-step solution →

Questions 21–25 · 2 marks each

  1. Q21(a) 2 marks
    The point lies on a semi-circular arc having diameter as shown in the given figure. The coordinates of points and are and respectively. Find the relation between and , if .
    P(x, y) A(3, 0) B(0, 4)
    Figure for part (a)
    Show answer
    The required relation is
    Step-by-step solution →
    OR
    Q21(b) 2 marks

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  2. Q22 2 marks
    Verify the relation between the zeroes and the coefficients of the quadratic polynomial .
    Show answer
    The zeroes of are and . Sum of zeroes and product of zeroes . Hence the relationship between the zeroes and the coefficients is verified.
    Step-by-step solution →
  3. Q23 2 marks
    In the figure given below, and . Prove that .
    1 2 A B C D E
    Show answer
    Since , in triangle the sides opposite these equal angles are equal, so . Substituting in gives , and with the common included angle , the SAS similarity criterion gives . Hence proved.
    Step-by-step solution →
  4. Q24(a) 2 marks
    Triangle is an isosceles right triangle, right angled at . Find the value of .
    Show answer
    Step-by-step solution →
    OR
    Q24(b) 2 marks

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  5. Q25 2 marks
    A square dart board is divided into four equal squares as shown in the figure given below. If a dart hits square , a player wins ₹ . If a dart hits square , a player loses ₹ . If a dart hits square , a player loses ₹ and if it hits square , the player will win ₹ . A player takes a turn and hits the dart board. What is the probability that
    1. (i)the player loses money ?
    2. (ii)the player wins ₹ ?
    D R C S O Q A P B + 25 − 100 + 100 − 50
    Show answer
    (i) P(the player loses money) ; (ii) P(the player wins ₹ )
    Step-by-step solution →

Questions 26–31 · 3 marks each

  1. Q26 3 marks
    Neha claimed that there does not exist any irrational number between and . Raunak claimed that lies between and and is an irrational number. Who do you think is correct ? Justify by proving either as an irrational number or otherwise.
    Show answer
    Raunak is correct : is an irrational number (proved by contradiction) and it lies between and , since gives . Neha's claim is therefore false.
    Step-by-step solution →
  2. Q27(a) 3 marks
    Prove that the system of equations given as and , is inconsistent for . Also, obtain the solution of the system of equations, if .
    Show answer
    For : but , so the lines are parallel and the system is inconsistent; for the solution is , .
    Step-by-step solution →
    OR
    Q27(b) 3 marks

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  3. Q28 3 marks
    Show that the quadrilateral with vertices , , and is a kite. Also, find the length of each diagonal of the kite .
    Show answer
    is a kite because units and units - two distinct pairs of equal adjacent sides. The diagonals measure units and units.
    Step-by-step solution →
  4. Q29(a) 3 marks
    If , find the value of . Also, using the above, prove that .
    Show answer
    , and hence - proved
    Step-by-step solution →
    OR
    Q29(b) 3 marks

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  5. Q30 3 marks
    T is a point on the line PS produced of a parallelogram PQRS and QT intersects RS at V. Prove that .
    Show answer
    In and , (opposite angles of parallelogram PQRS) and (alternate interior angles, with transversal QT). Hence by the AA similarity criterion.
    Step-by-step solution →
  6. Q31 3 marks

    Also in 2023 · 430/C/B (Q33(b)), 2015 · 30/1/1 (Q24), 2015 · 30/2/1 (Q24)

    Prove that the tangent at any point of a circle is perpendicular to the radius through the point of contact.
    Show answer
    For any point Q on the tangent XY other than the point of contact P, Q lies outside the circle, so . Hence OP is the shortest distance from O to XY, and therefore - the tangent at any point of a circle is perpendicular to the radius through the point of contact.
    Step-by-step solution →

Questions 32–35 · 5 marks each

  1. Q32(a) 5 marks
    Express as a quadratic equation in standard form and hence find its roots. Also, find the value of for which the equation , when expressed as a quadratic equation, has real and equal roots.
    Show answer
    Standard form: ; its roots are and ; the equation , i.e. , has real and equal roots for or .
    Step-by-step solution →
    OR
    Q32(b) 5 marks

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  2. Q33 5 marks
    In the given figure, quadrilateral PQRS circumscribes the circle with centre O. Prove that the opposite sides of the quadrilateral PQRS subtend supplementary angles at the centre O.
    O P Q R S
    Show answer
    Joining O to the vertices and to the points of contact A, B, C, D of sides PQ, QR, RS, SP, the SSS congruences such as give four equal pairs among the eight central angles ( twice each). Since the eight angles total , , and regrouping gives and - the opposite sides of PQRS subtend supplementary angles at the centre O.
    Step-by-step solution →
  3. Q34(a) 5 marks
    ABCD is a square. With centres A, B, C and D, four quadrants (each touching two of the remaining three) are drawn inside the square ABCD as shown in the figure. If the area of the shaded region is , find the side of the square ABCD. Also, find the perimeter of the shaded region.
    D C A B
    Figure for (a): square ABCD with four quadrants drawn from its corners; the central region is shaded.
    Show answer
    The side of the square is cm and the perimeter of the shaded region is cm.
    Step-by-step solution →
    OR
    Q34(b) 5 marks

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  4. Q35 5 marks
    The median of the following data is . If the sum of all the frequencies is , find the values of and .
    ClassFrequency
    0 - 1002
    100 - 200
    200 - 3009
    300 - 40012
    400 - 50017
    500 - 60020
    600 - 70015
    700 - 8009
    800 - 900
    900 - 10004
    Show answer
    The values are and .
    Step-by-step solution →

Questions 36–38 · 4 marks each

  1. Q36 4 marks
    A multistorey building is constructed with stilt parking. There is a provision of lift, as well as staircase from the ground floor to the top floor. The number of stairs from the ground floor to the first floor is , from the first floor to the second floor is , from the second floor to the third floor is , and so on. Based on the above information, answer the following questions :
    10 stairs 24 stairs 38 stairs Ground floor First floor Second floor Third floor
    1. (i)Does form an A.P. ? Justify your answer.[1]
    2. (ii)What will be the total number of stairs from the ground floor to the eleventh floor ?[1]
    3. (iii)(a)A person supplies water cans to people living in the building. As water cans are heavy, he supplies water cans on each floor, carrying one at a time. He supplied the water can from the ground floor to the first floor, came back and supplied water can to the second floor, again came back then supplied water can to the third floor, and so on. (a) Find the total number of stairs he climbed up and down to supply water till the sixth floor, using A.P.[2]
    4. (iii)(b)OR : The next day, following the same process, if a person climbed up and down a total of stairs, till which floor did he supply water cans ?[2]
    Show answer
    (i) Yes — the differences are and , which are equal, so forms an A.P. with common difference ; (ii) The total number of stairs from the ground floor to the eleventh floor is ; (iii)(a) The total number of stairs climbed up and down to supply water till the sixth floor is ; (iii)(b) He supplied water cans till the floor.
    Step-by-step solution →
  2. Q37 4 marks
    Climate change and global warming are influencing storm behaviour, particularly in terms of intensity and rainfall. Strong winds and storms often cause uprooting and/or breaking of trees, which damage the vehicles standing underneath the trees. On a particular day, during a high intensity storm, a tree broke such that its broken part formed an angle of with the ground. The distance between the base of the tree to the point where the top touches the ground is found to be m. Based on the above information, answer the following questions :
    30° broken part A B C h 10 m
    1. (i)Represent the given information with the help of a neat and well labelled diagram.[1]
    2. (ii)Find the height above the ground at which the tree is broken.[1]
    3. (iii)(a)Find the height of the tree before it broke. (Use )[2]
    4. (iii)(b)OR : If another tree broke from the same height as in part (ii), but the broken part made a angle with the ground, find the total height of the tree.[2]
    Show answer
    (i) The situation is the right triangle shown in the diagram — stump vertical, broken part making with the ground, m and the right angle at ; (ii) The tree is broken at a height of m above the ground; (iii)(a) The height of the tree before it broke was m; (iii)(b) The total height of the second tree is m.
    Step-by-step solution →
  3. Q38 4 marks
    For a cricket tournament involving countries, a special trophy, as shown below, is designed. The height and diameter of the cylindrical part are cm and cm respectively and the diameter of the spherical ball on the top is cm. Based on the above information, answer the following questions :
    Wooden base 7 cm 6 cm 14 cm
    1. (i)Find the total height of the trophy excluding the wooden part.[1]
    2. (ii)Find the difference between the radius of sphere and that of cylinder.[1]
    3. (iii)(a)If the cylindrical part and spherical part are separated and gold plated overall, find the total surface area to be gold plated.[2]
    4. (iii)(b)OR : Find the volume of the metal used in making the trophy, assuming that the metal is completely filled in it.[2]
    Show answer
    (i) The total height of the trophy excluding the wooden part is cm; (ii) The difference between the radius of the sphere and that of the cylinder is cm; (iii)(a) The total surface area to be gold plated is ; (iii)(b) The volume of the metal used is .
    Step-by-step solution →

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