+M and -M effects

Calculation and Comparison OF Bond order and Bond length|| +M and -M effect

Introduction OF Mesomeric Effect (+M and -M Effect)|| Hyperconjugation|| Carbocation Stability

Which of the following group show +M and -l effect?

Assertion : Phenol is a weak acid than ethanol. Reason : Groups with +M effect and -I effect decrease acidity at m-position .

Which of the following group show -m and -I effect?

Which of the following have -M effect ( overline e - withdrawing mesomeric effect) ?

Which of the following contain + M but -I effect -

Assuming that the atmosphere has a uniform density of (1.3kg//m^(3)) and an effective height of 10 km, find the force exerted on an area of dimensions 100mxx80m at the bottom of the atmosphere.