Which of the following is resistant to the action of both heat & chemicals?

A. Borosilicate glass

B. Silica glass

C. Soda lime glass

D. None of these

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

You can do it
  1. Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e.…
  2. Boiling point of water gets lowered at high altitudes (e.g., hills), because
  3. Cupola produces __________ iron.
  4. The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost…
  5. On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate…
  6. One of the methods of purification of leach liquor is ion exchange, which involves
  7. Which of the following is not the function of a volute casing provided in a centrifugal pump?
  8. During decarburising of a plain carbon steel, the thickness of ferrite layer growth is proportional…
  9. Electrometallurgy is not involved in the extraction of __________ from its ore.
  10. Identify the correct statement.
  11. Propulsion of rocket follows from the
  12. The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 >…
  13. In case of condensers & evaporators operating under given terminal conditions, LMTD (logarithmic mean…
  14. Heat transfer by __________ is almost absent in case of fluidised bed drying operation.
  15. Which of the following commonly used condenser tube materials has the lowest thermal conductivity?
  16. Absolute zero pressure can be attained at a temperature of
  17. Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.
  18. __________ property of steel increases by addition of large amount of silicon in it.
  19. The product out from a cupola is called
  20. Desalination of water
  21. For an ideal gas, Cp - Cv is
  22. Hydrogen in liquid steels is dissolved
  23. The best lubricants for a machine working at high temperature & load is
  24. Change in volume of metals from absolute zero temperature to their melting points is
  25. Energy to be supplied to the radioactive nucleus for the emission of a neutron is __________ MeV.
  26. With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.
  27. In multipass welds, shot peening is done after each pass to
  28. During sensible cooling of air, its wet bulb temperature
  29. Which of the following gases cause global warming?
  30. Quartz is a __________ material.