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4571

What accounts for the low melting and boiling points of covalent molecules?

  • A. They have weak intermolecular forces
  • B. They have definite shapes
  • C. They are three dimensional structures
  • D. They possess shared electron pairs
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4572

Iron produced directly from a blast furnace is

  • A. wrought iron
  • B. cast iron
  • C. pig iron
  • D. carbon steel
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4573

What is the molecular mass of an alkanoic acid, if 0.5 mole of the acid weighs 44g?

  • A. 72
  • B. 88
  • C. 60
  • D. 46
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4574

Alkenes are represented with the general molecular formula 

  • A. C\(_n\)H\(_{2n}\)
  • B. C\(_n\)H\(_{2n-2}\)
  • C. C\(_n\)H\(_{2n+2}\)
  • D. C\(_n\)H\(_{2n+1}\)OH
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4575

The major product when 2-methylpropene reacts with HCl is

  • A. 2-chloro, 2-methylpropane
  • B. 1-chloro,2-methylpropane
  • C. 3-chloro, 2-methylpropane
  • D. 2-chloro,3-methylbutane
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