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Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of

A. Paper

B. Cloth

C. Lead

D. Aluminium

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. A material being tested for endurance strength is subjected to the __________ load.
  2. Satellites burn off during re-entry to earth's atmosphere, because of the
  3. Addition of silicon to cast iron
  4. A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure…
  5. The surface tension of a liquid, at critical temperature is
  6. Most important property of steels for use in automobile bodies is the
  7. Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?
  8. LVDT used for displacement measurement is a/an __________ transducer.
  9. 'Amortization' in respect of financial obligation of a company means the
  10. A highly elastic material is deformed least on loading and retains its original form on removal of the…
  11. Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank)
  12. The leaching solvent used in Baeyer's process for the purification of bauxite is
  13. Machinability of hard alloys and tool steels is improved by
  14. Pick out the wrong statement.
  15. Inertial forces are obtained, when the elastic forces are multiplied by __________ number.
  16. There are one octahedral void and __________ tetrahedral void in the closest packing of atoms.
  17. The concentration of (H+) ions is 4 x 10-5 in a solution. Then pH of the solution will be (Given log…
  18. __________ test determines the yield strength, Young's modulus of elasticity, percentage reduction in…
  19. Material of construction of the electrode used in the electric resistance welding is
  20. Gratings is associated with the measurement of
  21. In troposphere (the weather domain), the temperature 't' at height 'h' above the sea level in metres…
  22. Hot working of lead is carried out at
  23. Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature…
  24. Mho's scale of hardness, which consists of 10 standard minerals is used for the measurement of __________…
  25. The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/cm2.
  26. Window panes of aeroplanes are normally made of
  27. Milk is fat dispersed in water. It is an example of
  28. Babbitt lining is used on brass/bronze bearings to increase the
  29. Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses…
  30. Multistage compression of air as compared to single stage compression offers the advantage of