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General Science
Play this  Quiz Game  On your phone 31 - Zero, 32 - Vulcanization, 33 - -40 degrees, 34 - Water vapor, 35 - 4 °C, 36 - Sound Navigation And Ranging,   37 - Au, 38 - Tungsten, 39 - Zinc and Copper, 40 - 92.

31. What is the rest mass of a photon?

           1e^-800

           1e^-200

           Zero

           Pseudoscience


32. The process of adding sulphur to the natural rubber is called:

           Vulcanization

           Sulfation

           Polymerization

           Esterification


33. At what temperature are Celsius and Fahrenheit the same?

           64 degrees

           0 degrees

           -30 degrees

           -40 degrees


34. The most abundant greenhouse gas in Earth's atmosphere is:

           Ozone

           Methane

           Water vapor

           Carbon dioxide


35. At what temperature is water at its densest?

           7 °C

           4 °C

           -12 °C

           0 °C


36. SONAR stands for:

           Sound Neutralization And Ranging

           Sound Navigation And Ranging

           Sound Optimization And Ranging

           Sound Navigation And Resolving


37. What is the chemical symbol of gold?

           As

           At

           Ar

           Au


38. The light bulb filaments were made up of:

           Lead

           Tungsten

           Nickel

           Radium


39. Brass is a mixture of:

           Nickel and Copper

           Iron and Nickel

           Zinc and Copper

           Nickel and Copper


40. What is the atomic number of Uranium?

           92

           12

           64

           80