close to that of pure water
less than 6.4
greater than 6.4
unaltered
Correct answer is B
No explanation has been provided for this answer.
The i.u.p.A.C name for the compound...
The metal extracted from cassiterite is ...
The method that cannot be used for removing permanent hardness of water is ...
The combustion of ethene, C 2H 4, is given by the equation C 2H 4 + 30 2 → 2CO2 + 2H2 O; ∆H = - ...
The atom of an element X combines with aluminium (13AI)?...
Chlorine displaces bromine from aqueous potassium bromide because ...
An eruption pollution an environment with gas suspected to be H<sub>2</sub>S, a poisonou...
The high boiling point of hydrogen fluoride can be explained in terms of ...
The production of biogas from the fermentation of waste materials is an example of ...