Chemistry
Which of the following chemicals is used in photography ?

Silver bromide
Aluminium hydroxide
Sodium chloride
Potassium nitrate

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.

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

ANSWER DOWNLOAD EXAMIANS APP

Chemistry
Water cycle refers to

Water distribution in relatively dry areas
An integrated attempt to recycle water in relatively arid regions
Scientific management of water in areas excessively plagued with water-logging
Constant movement of water from ocean to land and back to ocean once again

ANSWER DOWNLOAD EXAMIANS APP