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  • Question
  • The gases used in different types of welding would include


  • Options
  • A. oxygen and hydrogen
  • B. oxygen and acetylene
  • C. oxygen, acetylene and argon
  • D. oxygen, hydrogen, acetylene and nitrogen

  • Correct Answer
  • oxygen and acetylene 


  • General Science problems


    Search Results


    • 1. The radioactive element most commonly detected in humans is

    • Options
    • A. potassium-40
    • B. cobalt-60
    • C. iodine-131
    • D. plutonium-238
    • Discuss
    • 2. Which of the following has got more heat capacity?

    • Options
    • A. Iron piece
    • B. Water
    • C. Gold piece
    • D. Benzene
    • Discuss
    • 3. A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is

    • Options
    • A. O positive
    • B. A positive
    • C. B positive
    • D. Cannot be determined on the basis of the given data
    • Discuss
    • 4. Which of the following is used in pencils?

    • Options
    • A. Silicon
    • B. Phosphorous
    • C. Graphite
    • D. Charcoal
    • Discuss
    • 5. Which of the following parts of the sun is easily visible only during a total solar eclipse?

    • Options
    • A. core
    • B. photosphere
    • C. sunspots
    • D. corona
    • Discuss
    • 6. When a gas is turned into a liquid, the process is called

    • Options
    • A. condensation
    • B. evaporation
    • C. deposition
    • D. sublimation
    • Discuss
    • 7. Which is the largest satellite in the solar system?
    • Discuss
    • 8. Which of the following plants is not capable of manufacturing own food?

    • Options
    • A. Algae
    • B. Mushroom
    • C. Carrot
    • D. Cabbage
    • Discuss
    • 9. Which one of the following types of laser is used in laser printers?

    • Options
    • A. Semiconductor laser
    • B. Dye laser
    • C. Gas laser
    • D. Excimer laser
    • Discuss
    • 10. What happens when some charge is placed on a soap bubble?

    • Options
    • A. Its radius decreases
    • B. Its radius increases
    • C. The bubble Collapses
    • D. The bubble expands
    • Discuss


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