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  • Question

  • Consider the following methods of preservation of timber :
    1. Dipping
    2. Brushing or spraying
    3. Pressure impregnation
    The correct sequence in decreasing order of the effectiveness of these methods of preservation is


  • Options
  • A. 1, 2, 3
  • B. 2, 1, 3
  • C. 3, 1, 2
  • D. 3, 2, 1

  • Correct Answer
  • 3, 2, 1 

    • UPSC Civil Service Exam Questions problems

    Search Results

    • 1. What is the use of a station pointer?

    • Options
    • A. For making soundings in water bodies
    • B. For plotting of soundings in harbour area
    • C. For marking sunken shipping hazards
    • D. For making tidal observations
      • Discuss
    • 2. Which are the critical activities of the bar chart shown above?

    • Options
    • A. Activities B and E
    • B. Activities A, D and F
    • C. Activities A, C and E
    • D. Activities A and F
      • Discuss
    • 3. For total reaction time of 2.5 seconds, coefficient of friction 0.35, design speed 80 km/h, what is the stopping sight distance on a highway?

    • Options
    • A. 127 m
    • B. 132 m
    • C. 76 m
    • D. 56 m
      • Discuss
    • 4. The given figure shows gradually varied flow in an open channel with a beak in bed slope. Types of water surface profiles occurring from left to right are

    • Options
    • A. H2 , S3
    • B. H2 , S2
    • C. H2 , M2
    • D. H3 , M2
      • Discuss
    • 5. Activated sludge is the

    • Options
    • A. resultant sludge removable from the aeration unit
    • B. sludge settled in the humus tank
    • C. sludge in the secondary tank post-aeration rich in microbial mass
    • D. sludge.in the secondary tank post aeration, rich in nutrients.
      • Discuss
    • 6. To generate 10, 000 hp under a head of 81 m while working at a speed of 500 rpirt, the turbine of choice would be

    • Options
    • A. Pelton
    • B. Kaplan
    • C. Bulb
    • D. Francis
      • Discuss
    • 7. In a PERT network, the activity durations are given as to (optimistic), tp (pessimistic) and tm (most likely time). What is the variance of is activity?

    • Options
    • A.
    • B.
    • C.
    • D. None of the above
      • Discuss
    • 8. Consider the following statements :
      A : In masonry, bricks are joined together by cement mortar.
      B : Cement mortar adheres more effectively to brick surface than any other material.

    • Options
    • A. both A and R are true and R is the correct explanation of A
    • B. both A and R are true but R is not the correct explanation of A
    • C. A is true but R is false
    • D. A is false but R is true
      • Discuss
    • 9. Consider the following statements :
      Collision diagram is used to
      1. study accident pattern
      2. eliminate accidents
      3. determine remedial measures
      4. make statistical analysis of accidents
      Of these statements :

    • Options
    • A. 1 and 2 are correct
    • B. 1 and 3 are correct
    • C. 3 and 4 are correct
    • D. 2 and 4 are correct
      • Discuss
    • 10. A bar of circular cross-section of diameter D is subjected to a torque T at B as shown in the figure given. What is the angle of twist at A?

    • Options
    • A. Same as that at B
    • B. Zero
    • C. Twice as that at B
    • D. Half as that at B
      • Discuss

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