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STD 12 - 5. Co-ordination chemistry — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 5. Co-ordination chemistry4 Marks
MCQ
Identify the correct sequence for True and False

$(I)$ Only compounds with chiral centers can be optically active

$(II)$ Absence of elements of symmetry is the reason for a molecule's optical activity

$(II)$ All organic compounds contain carbon & hydrogen

$(IV)$ Different cannonical forms of a molecule represent the actual structures of a molecule which has resonace in it

  • A
    $TTFT$
  • ✓
    $FFFF$
  • C
    $TTTT$
  • D
    $TTFF$
✓

Answer

Correct option: B.
$FFFF$
b
$(I)$ A compound may be optically activeeven in absence of a chiral centre

$(II)$ Optical activity is due to different rotation of plane polarised light by the moleucle. Absence of symmetry is not the reason for optical activity.

$(III)$ Not all organic compounds may contain hydrogen

$(IV)$ Cannonical forms are not a ctual structures; they are the most suitable representations of the molecule

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  {^{C{H_3}}} \\ 
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  {{\text{ }}\backslash {\text{ }}} \\ 
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