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TNPSC Chemistry Gk Questions and Answers

General Science
1. Borax is one of the constituents in
 
  • A. Flint glass
  • B. Hard glass
  • C. Safety glass
  • D. Pyrex glass
Answer: D.
Pyrex glass
 
2. Which of the following steel is used in making radio valves?
 
  • A. Nickel steel
  • B. Cobalt steel
  • C. Silicon steel
  • D. Manganese steel
Answer: A.
Nickel steel
 
 
3. Name the metal, which has been used in ancient times?
 
  • A. Silver
  • B. Copper
  • C. Zinc
  • D. Titanium
Answer: B.
Copper
 
4. The setting of plaster of paris takes place due to
 
  • A. Oxidation
  • B. Reduction
  • C. Hydration
  • D. Dehydration
Answer: C.
Hydration