The presence of hydrogen sulphide in water causes? Mark as favorite Copy Link softening alkalinity acidity bad taste Check Answer
A pipe sunk into the ground to tap the underground water is called? Mark as favorite Copy Link open well tube well artesian well infiltration well Check Answer
The presence of calcium and magnesium chloride in water causes? Mark as favorite Copy Link softening bad taste hardness turbidity Check Answer
The earth’s water circulatory system is known as? Mark as favorite Copy Link water cycle hydrological cycle precipitation cycle all of these Check Answer
The growth of population may be conveniently represented by? Mark as favorite Copy Link semi-logarthmic curve logistic curve straight line curve all of these Check Answer
The layers such as sand and gravel which allow the water to pass through them are known as? Mark as favorite Copy Link previous layers aquifers water bearing strata all of these Check Answer
The colour of water is expressed in numbers of a? Mark as favorite Copy Link silica scale platinum cobalt scale po value none of these Check Answer
The formula, F = R – K(1.8T + 32) for obtaining the annual run-off is known as? Mark as favorite Copy Link Justin's formula Vermule's formula Inglis formula Khosla's formula Check Answer
Which of the following belongs to homologous series of alkynes C6H6, C2H6, C2H4, C3H4? Mark as favorite Copy Link C2H6 C2H4 C3H4 C6H6 Check Answer
Which of the following formula is used for computing the quantity of water for fire demand? Mark as favorite Copy Link Freeman's formula Kuichling formula Buston's formula all of these Check Answer