All the atoms of the world comprise of electrons, proton & neutron except that of __________ atom in which neutron is absent.

A. Deuterium

B. Hydrogen

C. Neon

D. Helium

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

You can do it
  1. Copper deposits are found in India at the following location:
  2. Metal shots used in shot blasting are made of
  3. In Imperial Smelting Process for extraction of zinc, zinc vapour thus produced is quenched in the external…
  4. A jet engine turbine blade is normally manufactured by
  5. The surface tension of a liquid, at critical temperature is
  6. On being hit with a hammer, __________ will readily fracture.
  7. Steel & cast iron pipes are produced by __________ casting.
  8. Notched bar test is used for testing the __________ of a material.
  9. Metal cutting by oxy-acetylene flame is accomplished by the __________ of the metal.
  10. The atmospheric temperature during melting of ice/snow (in the atmosphere)
  11. The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________…
  12. A pycnometer is used for the measurement of
  13. What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer…
  14. Globular form of cementite is formed during the __________ process.
  15. Titanium is produced by __________ of Ti Cl4.
  16. Which of the following is not a principal alloying element for the structural steel?
  17. Alloy powder manufactured by the following process have spherical shapes.
  18. Oxyacetylene reducing flame is used while carrying out welding on
  19. Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at…
  20. Limestone is added in the blast furnace (during pig iron manufacture) to
  21. A form of stress corrosion failure termed as 'season cracking' is generally observed in
  22. Steel produced from phosphatic iron is __________ in nature.
  23. Dowtherm is a
  24. In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient…
  25. Hydrogen in liquid steels is dissolved
  26. Which of the following represents the correct time-temperature curve when a block of metal is heated…
  27. Recrystallisation temperature of steel is __________ °C.
  28. The dew point temperature lines on psychrometric charts are straight inclined sloping downwards to the…
  29. Maximum change in the hardness of martensite occurs in the carbon content range of __________ percent…
  30. An atom bomb works on the principle of