NDA Preparation TEST PAPER

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  • 1): Orthouitropnenol is a ;

    1) Lewis base

    2) Lewis acid ANS: 1

    3) 1 and 2

    4) neither 1 nor 2

     

    2): Which of the following shows cistrans isomerism?

    1) CH3-C-Br=C-C12

    2) CH3-CH=Ch2 ANS: 3

    3) C1-CH=CH-CH3

    4) (CH3)2-C=CH-C1

     

    3): The magnetic moment of an ion having 4 unpaired electrons is:

    1) 3.9 B.M.

    2) 2.8 B.M. ANS: 4

    3) 1.7 B.M.
    4) 4.9 B.M.

     

    4. If A = {I, 2, {3, 4}, 5}, then the correct statement is :

    A. {3, 4} ??A

    B. {3, 4} ? A

    C. {3, 4} ??A

    D. { {3, 4} }? A

     

     

     

     

    5. If D be subset of the set of all rational numbers, which can be expressed as terminating decimals, then D is closed under the binary operations of

    A. addition, subtraction and division

    B. addition, multiplication and division

    C. addition, subtraction and multiplication

    D. subtraction, multiplication and division

     

    6. Of the following sets, the one having exactly eight subsets, is:

    A. {0, 1, 2}

    B. {1, 2}

    C. {8}

    D. {1, 2, 3, 4, 5, 6, 7, 8}

     

    7. The total number of subsets of the sets {1, 3, 5, 7} is :

    A. 8

    B. 10

    C. 12

    D. 16

     

    8. The velocity of sound at 76 cm of pressure is 332 m/s If the pressure is doubled, the velocity of sound becomes:

    A. 166 m/s

    C. 332 m/s

    B. 664 m/s

    D. 340 m/s

     

    9. Sound produced by any of the methods may be essentially characterized by its:

    A. pitch

    C. loudness

    B. quality

    D. all of these

     

     

    10. Different sounds of the same loudness can be distinguished from the difference

    in their:

    A. frequencies

    B. pitch

    C. both of these

    D. none of these

     

    11. 1 hertz is equal to:

    A. 1 m/s

    B. 1 cm/s

    C.1 vibrations

    D. 1 mm/s

     

    12. When sound waves travel from air to water, the quantity that remains unchanged is:

    A. speed

    B. frequency

    C. wavelength

    D. intensity

     

    13. When sound waves travel from one medium to another, the characteristic which remains unchanged is:

    A. frequency

    B. speed

    C. amplitude

    D. wavelength

     

    14. Those which represent progressive waves include:

    A. 1 and 2

    B. 3 and 4

    C.5 and 6

    D. 2 and 4

     

    15 Sound waves travel fastest in:

    A. brass

    B. hydrogen

    C. oxygen

    D. water

     

    16. Two sound waves passing through air have their wavelengths in the ratio 4: 5.Their frequencies are in the ratio:

    A. 4: 5

    B. 3: 4

    C. 5: 4

    D. 1:1

     

    17. Sound travels in gases in 'the form of:

    A. longitudinal waves only

    B. transverse waves only

    C. longitudinal as well as transverse waves

    D. stationary waves

     

    18. The line x + y =2 is tangent to the curve x2=3 - 2y at. its point

    A. (1, 1)

    B. (-1, 1)

    c. (v3, 0)

    D. (3, -3)

     

    19. The distance between the lines 3x- 2y=1 and 6x + 9=4y is

    A.1/v52

    B11/v52

    C.4/v13

    D.6/v13