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How many hydrogen atoms are displaced by D in given reaction?

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Important Questions on Organic Chemistry- Some Basic Principles and Techniques

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The major product in the following reaction is having how many pi electrons here?

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How many of the following intermediates have at least one contributing structure in which all atoms have their octet complete?
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The given compound exists in polar form in which there is a close loop of Huckle's number of electrons. The number of electrons in the outer loop is.

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In the Kjeldahl's method for estimation of nitrogen present in a soil sample, ammonia evolved from 1 g of sample neutralized 10 mL of 1M H2SO4. The percentage of nitrogen in the soil is
[Report your answer to the nearest integer]
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X= The total number of geometrical isomers possible for the compound given below. Find the value of X4:

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 Number of chiral carbon in (M)=x
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Number of Geometrical isomers in (N)=y
The value of yx is

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How many resonating structures are possible for the compound?

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Among the following how many of them will show keto-enol tautomerism?

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