Which of the following statements is wrong? 
(i) Ozone is not responsible for the greenhouse effect. 
(ii) Ozone can oxidize Sulphur dioxide present in the atmosphere to Sulphur trioxide. 
(iii) Ozone hole is thinning of the ozone layer present in the stratosphere. 
(iv) Ozone is produced in the upper stratosphere by the action of UV rays on oxygen. 

–I effect ∝ Acidic strength

+I effect ∝ Basic strength

*  Most stable anion due to maximum –I effect.

*  Most acidic

with increase in separation of screen from slits plane, fringe width increases.

Excessive nitrate in drinking water causes methemoglobinemia

Excessive nitrate in drinking water causes methemoglobinemia

Release of toxic/undesirable materials in the environment.