Chemestry Test 1
Which of the following is not a source of sulphur?
  • Galena
  • Carnalite
  • Gypsum
Explanation: Carnalite is not a source of sulfur. It is a potassium magnesium chloride sulfate mineral, and while it contains sulfur in its sulfate component, it is not primarily considered a source of sulfur.
Which one of the following is also called stranger gas?
  • Nitrous oxide
  • Xenon
  • Neon
  • Argon
  • Nitrous oxide
  • Xenon
  • Neon
  • Argon
Explanation: Xenon is a rare, colorless, odorless noble gas, often referred to as the "stranger gas" due to its unique characteristics. It has applications in medical imaging, such as in CT scans, and in space propulsion systems. Despite being chemically inert, xenon can form compounds with highly electronegative elements.
What is main component of gober gas?
  • Chlorine
  • Hydrogen
  • Methane
  • Ethylene
Explanation: Gober gas, also known as biogas, is primarily composed of methane (CHâ‚„), which is produced through the anaerobic digestion of organic matter like animal dung (gober).
____ is also known as marsh gas.
  • Acetylene
  • Ethylene
  • Methane
  • Ethane
Explanation: Methane is commonly known as marsh gas because it is produced in marshy or swampy areas through the decay of organic material in anaerobic conditions.
The element which shows least metallic character is
  • Aluminium
  • Boron
  • Indium
  • Gallium
Explanation: Boron is a metalloid and shows the least metallic character among the elements listed. It has properties intermediate between metals and non-metals.
The property of fluidity is absent in
  • Solids
  • Gases
    • Explanation: Fluidity refers to the ability of a substance to flow. Solids have a fixed shape and do not flow, so they lack the property of fluidity.