Question: 100% NCERT covered from Particular Keyword.Explanations are 100% from NCERT | [Difficult level: Easy] From NCERT NEET Derived Question.
Read the following statements and choose the correct code
(i) SN2 reaction proceed with complete stereochemical
inversion.
(ii) SN1 reaction proceed with recimisation.
(iii) A dextrorotatory compound rotate the plane polarised
light to the left.
(iv) A laevorotatory compound rotate the plane polarised
light to the right
(a) TFTT (b) TTFF
(c) FFTT (d) TFTF
Answer: b
If the compound rotates the plane polarised light to
the right, i.e., clockwise direction, it is called
dextrorotatory (Greek for right rotating) or the d-form
and is indicated by placing a positive(+) sign before
the degree of rotation.
the right, i.e., clockwise direction, it is called
dextrorotatory (Greek for right rotating) or the d-form
and is indicated by placing a positive(+) sign before
the degree of rotation.
If the light is rotated towards
left (anticlockwise direction), the compound is said to
be laevorotatory or the l-form and a negative (–) sign
is placed before the degree of rotation.
left (anticlockwise direction), the compound is said to
be laevorotatory or the l-form and a negative (–) sign
is placed before the degree of rotation.
