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  1. A boy weighing 110lb climbs up a 50 ft high vertical destination in 100 seconds. Horse power of the boy is __________ hp.

  2. A.

     0.1

    B.

     0.5

    C.

     0.8

    D.

     1

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  3. Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm.

  4. A.

     10

    B.

     20

    C.

     30

    D.

     40

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  5. The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 x 10⁻¹6⁶ m² . S⁻¹ and it is 1.94 x 10⁻¹⁴ m² S⁻¹ at 1200 K. The activation energy (in k. J.mole⁻¹ ) for the diffusion of Ni in Cu is

  6. A.

     130

    B.

     180

    C.

     230

    D.

     250

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  7. Hoope's cell is predominantly used for the electrolytic refining of

  8. A.

     Zinc

    B.

     Copper

    C.

     Aluminium

    D.

     Tin

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  9. Referring to the periodic table of elements, it is found that with increasing atomic number. The atomic size in the same

  10. A.

     Period increases

    B.

     Period decreases

    C.

     Group increases

    D.

     Both 'b' & 'c'

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  11. 'Sterilised zone' around a hazardous chemical industry is an area with __________ km radius around it, in which the total population/inhabitants should be less than 20000 preferably in the upwind direction.

  12. A.

     0.5

    B.

     5

    C.

     25

    D.

     50

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  13. Internal cracks in drawn bars are due to

  14. A.

     Secondary tensile stresses

    B.

     Temperature gradient in the work piece

    C.

     Heated dies and grips

    D.

     Internal compressive residual stress

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  15. RADAR is

  16. A.

     Acronym for Radio Detection and Ranging

    B.

     Name of technique for locating distant objects

    C.

     Name of instrument for locating distant objects

    D.

     All of the above

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  17. All modes of heat transfer i.e., conduction, convection & radiation occur in case of the

  18. A.

     Condensation of steam in a partial condenser

    B.

     Boiler furnace

    C.

     Insulated pipe car raying high pressure steam

    D.

     None of these

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  19. Usual value of the resistance suitable for a wire resistance strain gauge is __________ ohms.

  20. A.

     20

    B.

     80

    C.

     120

    D.

     500

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