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4691

Which of the following species is the most powerful reducing agent?

  • A. Bromine atom
  • B. Chlorine atom
  • C. Fluoride atom
  • D. Iodine atom
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4692

The electron configuration of element Y is 1S\(^2\)2S\(^2\)2P\(^6\)3S\(^2\)3P\(^4\). Y, therefore,

  • A. has mass number of 16
  • B. has three unpaired electron
  • C. belongs to period 4
  • D. belongs to group VI
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4693

Which of the following alkanols is tertiary?

  • A. 2-methylpentan-2-ol
  • B. 2-methylpentan-1-ol
  • C. pentan-3-ol
  • D. pentan-2-ol
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4694

Which of the following elements is commercially obtained by the electrolysis of its fused salt?

  • A. Silver
  • B. Copper
  • C. Helium
  • D. Sodium
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4695

The lustre of a metal is due to its

  • A. high density
  • B. refractive density
  • C. chemical inertness
  • D. free electrons
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