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Chemistry Questions and Answers

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96. National chemical laboratory is at
 
  • A. Delhi
  • B. Pune
  • C. Kalpakkam
  • D. Kolkata
 
97. Magnetron is used for the production of
 
  • A. Cathode rays
  • B. Microwaves
  • C. Positive rays
  • D. X–rays
 
 
98. The metal which is found in liquid state is
 
  • A. iron
  • B. mercury
  • C. copper
  • D. platinum
 
99. What is the first element of periodic table?
 
  • A. Sodium
  • B. Neon
  • C. Hydrogen
  • D. Helium
 
100. The ore used in the extraction of phosphorous by the modern electric process is
 
  • A. bone ash
  • B. rock phosphate
  • C. phosphoric acid
  • D. none of these