Chemistry
Photo chemical smog is a resultant of the reaction among

NO2, O3 and peroxy acetyl nitrate in the presence of Sunlight
High concentration of NO2, O3, and CO in the evening
CO, O2 and peroxy acetyl nitrate in the presence of Sunlight
CO, CO2 and NO2at low temperature

ANSWER DOWNLOAD EXAMIANS APP

Chemistry
Assertion (A) : Synthetic detergents can lather wen in hard water.Reason (R) : Synthetic detergents form soluble calcium and magnesium salts with hard water.

Both A and R is true and R is the correct explanation of A
A is false but R is true
A is true but R is false
Both A and R is true but R is not a correct explanation of A

ANSWER DOWNLOAD EXAMIANS APP