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Questions and Answers
  • 1. 
    If a copper wire is stretched to double of its length, then the value of resistance becomes
    • A. 

      ½ times

    • B. 

      4 times

    • C. 

      2 times

    • D. 

      Remains Same

  • 2. 
    Magnetic field lines are always
    • A. 

      Straight lines

    • B. 

      Zigzag lines

    • C. 

      Hyperbola

    • D. 

      Closed loops

  • 3. 
    Lenz’s law is a consequence of the law of conservation of
    • A. 

      Charge

    • B. 

      Mass

    • C. 

      Momentum

    • D. 

      Energy

  • 4. 
    Image formed by plane mirror
    • A. 

      Must be real

    • B. 

      Must be virtual

    • C. 

      May be real or virtual

    • D. 

      Information provided is not enough

  • 5. 
    An ion X2- contains 10 electrons and 8 neutrons. What are the atomic number and mass number of element X?
    • A. 

      10, 18

    • B. 

          8, 16

    • C. 

      10,16

    • D. 

      8,18

  • 6. 
    The pH of carbonated drink is
    • A. 

    • B. 

      >7

    • C. 

      =7

    • D. 

      Approx 7.8

  • 7. 
    Which of the following statements is correct about the given reaction? AB + C ----> CB +A
    • A. 

      B is more reactive than C

    • B. 

      C is more reactive than A

    • C. 

      B and A are non-metals inert gas

    • D. 

      A is a metallic ion

  • 8. 
    During electrolysis of water , the reaction involved is 2H2O (l) -----> 2H2(g) + O2(g)The charges carried by anode and cathode respectively is
    • A. 

      +,+

    • B. 

      -,-

    • C. 

      +,-

    • D. 

      -,+

  • 9. 
    In 2.495 gm of CuSO4.5H2O (Molar Mass= 249.5) , total number of atoms present are (1 NA = 6.022*1023)
    • A. 

      0.01 NA

    • B. 

      0.21 NA

    • C. 

      21 NA

    • D. 

      None of these

  • 10. 
    The value of tan85× tan80 × tan75 × … × tan5 is
    • A. 

      1

    • B. 

      3

    • C. 

      1

    • D. 

      4

  • 11. 
    If the positive square root of 4 is 2 then the positive square root of 0.4 (upto one place of decimal) is
    • A. 

      0.2

    • B. 

      0.3

    • C. 

      0.6

    • D. 

      0.5

  • 12. 
    There are deer and peacocks in a zoo. By counting heads they are 80. The number of their legs is 200. The number of peacocks in the zoo are
    • A. 

      50

    • B. 

      20

    • C. 

      30

    • D. 

      60

  • 13. 
    A woman says, “If you reverse my own age, the figure represent my husband’s age. He is of course, senior to me and the difference between our ages is one - eleventh of their sum.” The woman’s age is
    • A. 

      34

    • B. 

      24

    • C. 

      45

    • D. 

      56

  • 14. 
    If 5 √3 is multiplied with √27 , we get
    • A. 

      105 √3

    • B. 

      45

    • C. 

      √405

    • D. 

      105

  • 15. 
    In a right ∆ ABC in which angle ABC = 90, AB = 1 cm and AC = 2 cm. The measure of angle ACB is
    • A. 

      30 degrees

    • B. 

      45 degrees

    • C. 

      60 degrees

    • D. 

      15 degrees

  • 16. 
    Which of the following points lie on the graph of the equation 3x – 4y = 10?
    • A. 

      (–3, –2)

    • B. 

      (8, 2)

    • C. 

      (2, 1)

    • D. 

      (2, –1)

  • 17. 
    The difference between 20th term and 12th term of the AP : 2, 13, 24, 35, ... is
    • A. 

      77

    • B. 

      88

    • C. 

      121

    • D. 

      99

  • 18. 
    The sum of first 10 terms of the AP given below is –7, –11, –15, ...
    • A. 

      -200

    • B. 

      -240

    • C. 

      -250

    • D. 

      -260

  • 19. 
    Which of the following points lie on the graph of the equation 3x – 4y = 10?
    • A. 

      (–3, –2)

    • B. 

      (8, 2)

    • C. 

      (2, 1)

    • D. 

      (2, –1)

  • 20. 
    The length of an arc of a circle of radius 14 cm and having central angle as 45 degree is
    • A. 

      11 cm

    • B. 

      22 cm

    • C. 

      28 cm

    • D. 

      7 cm

  • 21. 
    Which of the following constructions of a triangle is not possible?
    • A. 

      The base, a base angle and the sum of other two sides of the triangle are given

    • B. 

      The base, a base angle and the difference of the other two sides of the triangle are given

    • C. 

      Perimeter of the triangle and its one base angle are given

    • D. 

      The length of all the three sides of the triangle are given

  • 22. 
    If the area of a triangle having (3, 2), (x, –4) and (5, 0) as coordinates of its vertices is 9 sq. units, then the value of x is
    • A. 

      2

    • B. 

      1

    • C. 

      -1

  • 23. 
    If area of sector of a circle of radius 14 cm is 77 cm sq, then the central angle of the sector is
    • A. 

      30 degrees

    • B. 

      60 degrees

    • C. 

      45 degrees

    • D. 

      90 degrees

  • 24. 
    The inability to see the nearby objects distinctly and comfortably, might be a symptom for
    • A. 

      Myopia only

    • B. 

      Hypermetropia only

    • C. 

      Hypermetropia or presbyopia

    • D. 

      Cataract or presbyopia

  • 25. 
    If a concave mirror forms an enlarged image of a real object placed on principal axis, then the image
    • A. 

      Must be real always

    • B. 

      Can be either real or erect, not both

    • C. 

      Can be either real or inverted, not both

    • D. 

      Must always be virtual

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