[B].
shrinkage of filtering media[C].
mud balls[D].
expansion of filtering mediaAnswer: Option C
Explanation:
No answer description available for this question.
Insufficient washing of sand grains in a rapid sand filter causes Read More »
CHEMICAL ENGINEERING, Environmental Engineering[B].
zinc[C].
iodine[D].
bromineAnswer: Option A
Explanation:
No answer description available for this question.
Brown spots in fabrics will be caused by washing with water containing large amount of . Read More »
CHEMICAL ENGINEERING, Environmental Engineering[B].
dark brown[C].
red[D].
blackAnswer: Option A
Explanation:
No answer description available for this question.
Fresh domestic sewage is __________ in color. Read More »
CHEMICAL ENGINEERING, Environmental Engineering[B].
02 to 0.3[C].
2 to 3[D].
5 to 10Answer: Option B
Explanation:
No answer description available for this question.
Maximum permissible residual chlorine in treated water should be __________ mg/litre. Read More »
CHEMICAL ENGINEERING, Environmental Engineering[B].
Iron and manganese[C].
Temporary hardness[D].
Permanent hardnessAnswer: Option C
Explanation:
No answer description available for this question.
__________ is removed from water by lime-soda process. Read More »
CHEMICAL ENGINEERING, Environmental Engineering[B].
alkalinity[C].
hardness[D].
iron & zincAnswer: Option C
Explanation:
No answer description available for this question.
In water treatment plant, zeolite process is used to remove the __________ of water. Read More »
CHEMICAL ENGINEERING, Environmental Engineering[B].
bleaching powder[C].
activated carbon[D].
copper sulphate.Answer: Option C
Explanation:
No answer description available for this question.
Foul odour and bad taste of water is removed by treating with Read More »
CHEMICAL ENGINEERING, Environmental Engineering[B].
chlorination[C].
bleaching[D].
aerationAnswer: Option B
Explanation:
No answer description available for this question.
Algae growth in water is controlled by Read More »
CHEMICAL ENGINEERING, Environmental Engineering[B].
bad taste[C].
foul odour[D].
bacteriaAnswer: Option D
Explanation:
No answer description available for this question.
Disinfection of water is done to remove Read More »
CHEMICAL ENGINEERING, Environmental Engineering[B].
7 x 10-7[C].
107[D].
7 x 107Answer: Option A
Explanation:
No answer description available for this question.
Hydrogen ion concentration in distilled water is Read More »
CHEMICAL ENGINEERING, Environmental Engineering