Cat B Sample Paper Set III For Class Xi And Xii

20 Questions | Total Attempts: 104

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Cat B Sample Paper Set III For Class Xi And Xii

Question No: 1-5 (Physics) Question No: 6-10 (Chemistry) Question No: 11-15 (Mathematics) Question No: 15-20 (Biology)


Questions and Answers
  • 1. 
    An inductive coil has a resistance of 100Ω.when an A.C. signal of frequency 1000Hz is fed to the coil, the applied voltage leads the current by 45°. What is the approximate inductance of the coil
    • A. 

      4mH

    • B. 

      8mH

    • C. 

      12mH

    • D. 

      16mH

  • 2. 
    Which of the following products, in a hydrogen atom, are independent of the principal quantum number n ? The symbols have their usual meanings
    • A. 

      ω^2n

    • B. 

      E/v

    • C. 

      V^(2 ) r

    • D. 

      E/r

  • 3. 
    The root mean square speed of oxygen molecules at a certain absolute temperature is v. If temperature is doubled and the Oxygen gas dissociates into atomic Oxygen, the rms speed would be
    • A. 

      V

    • B. 
    • C. 

      2v

    • D. 
  • 4. 
    A proton (massmand charge +e) and an alpha particle (mass 4m and charge +2e) are projected with the same kinetic energy at right angles to a uniform magnetic field. which one of the following statements will be true ?
    • A. 

      The alpha - particle will be bent in a circular path with a smaller radius than that of the proton.

    • B. 

      The radius of the path of the alpha particle will be greater than that of the proton.

    • C. 

      The alpha particle and the proton will be bent in a circular path with the same radius.

    • D. 

      The alpha particle and the proton will go through the field in a straight line.

  • 5. 
    A surface irradiated with light of wave length 480 nm gives out electrons with maximum velocity vm/s, the cut off wave length being 600 nm.The same surface would release electron with maximum velocity 2 vm/s if it irradiated by light of wave length
    • A. 

      300 nm

    • B. 

      360 nm

    • C. 

      384 nm

    • D. 

      400 nm

  • 6. 
    The volume of an ideal gas is reduced to half from its original volume without change in temperature & pressure. The specific heat capacity of gas will be
    • A. 

      Reduced to half

    • B. 

      Be doubled

    • C. 

      Remain constant

    • D. 

      Increase four times

  • 7. 
    How many alkene on catalytic hydro genation give iso-pentane as a product.
    • A. 

      2

    • B. 

      3

    • C. 

      4

    • D. 

      5

  • 8. 
    Assuming each salt to 80% dissociated, which of the following aqueous solution will have lowest vapour pressure.
    • A. 
    • B. 
    • C. 
    • D. 

      A solution obtained by mixing equal volume of (2) & (3)

  • 9. 
     Which of the following species has / have axial A-F bond length longer than equatorial A-F bond length (where A is the central atom)?
    • A. 
    • B. 

       

    • C. 
    • D. 

      All of these

  • 10. 
    For the coagulation of a particular colloidal solution the order of coagulation power of electrolytes is as follows.
    • A. 

      In electroosmosis of this colloidal solution dispersion medium move towards cathode.

    • B. 

      Diffuse layer of the colloidal sol contain positively charged ions.

    • C. 

      It may be metal sol such as Pt, Au, Hg.

    • D. 

      It may be basic dye sol such as methylene blue.

  • 11. 
     If the 7th term in the binomial expansion of   is 729, then x is equal to
    • A. 

      E/2

    • B. 

      E

    • C. 

      2e

    • D. 
  • 12. 
    Let f (x) =  on the interval -3 < x < 3.Consider the following statements : (1)The function attains relative minimum at only one point. (2) The function attains relative maximum at only one point. which of the following statement(s) is (are) correct ?
    • A. 

      1 only

    • B. 

      2 only

    • C. 

      Both 1 and 2

    • D. 

      Neither 1 nor 2

  • 13. 
    Given a sequence of 4 numbers, first three of which are in G.P. and the last three are in A.P. with common difference 6. If first and last terms of this sequence are equal, then the last term is
    • A. 

      2

    • B. 

      4

    • C. 

      8

    • D. 

      16

  • 14. 
    Let f (x) =
    • A. 
    • B. 

      F is a strictly increasing function

    • C. 

      F is a strictly decreasing function

    • D. 

      F is a constant function

  • 15. 
    If the system of linear equations is consistent and has finite number of solutions, then
    • A. 

      B = 15, a can be any real number

    • B. 
    • C. 

      A = 8, b can be any real number

    • D. 

      A= 8, b = 15

  • 16. 
    In RNA, adenine will pair with -
    • A. 

      Thymine

    • B. 

      Guanine

    • C. 

      Uracil

    • D. 

      Cytosine

  • 17. 
    At 16 cell embryo of frog how many cleavages are completed-
    • A. 

      1

    • B. 

      4

    • C. 

      8

    • D. 

      16

  • 18. 
    Fructose 1 : 6 biphosphate splits into two triose phosphates by enzyme
    • A. 

      Aldolase

    • B. 

      Amylase

    • C. 

      Zymase

    • D. 

      Lipase

  • 19. 
    Soil erosion is prevented by-
    • A. 

      Afforestation

    • B. 

      Increased bird population

    • C. 

      Overgrazing

    • D. 

      Removal or vegetation

  • 20. 
    Macromolecule chitin is
    • A. 

      Sulphur containing

    • B. 

      Phosphours containing polysaccharide

    • C. 

      Nitrogen containing polysaccharide

    • D. 

      Simple polysaccharide

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