Check Your Answers of Very short type questionnaire. WMFI

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Answers
of short type questions.

                                                                               

1.      
In
developing countries most food is lost at     production     stages.

2.      
In
developed countries most food is lost at    consumption    Stages.

3.      
In
developed countries about    100 Kg    kilogram of food is wasted per person per
year.

4.      
Main types
of Food Waste are    liquid waste
and solid waste.

5.     
Normally-used
BOD test procedure requires    five  
days sample incubation period.

6.     
pH range for  neutral 
is   7.

7.     
pH range for basic is   7 to 14.

8.     
pH range for acid is    0
to 7.

9.     
pH of food processing waste
water ranges from    3.5 to 11.5
.

10.  
The
generally recommended ratio of BOD to total N to total P is    100 : 05 : 01.

11.  When industrial effluents are allowed for disposal
into water courses the max. BOD limit is 100 mg/ltr.

12.  When Industrial effluents are discharge on land
for irrigation purposes the max. BOD limit is 500 mg/ltr.

13.  
Full form of BOD is    biochemical oxygen demand.

14.  
Full form of COD is    chemical oxygen demand.

15.  
Full Form of TOD is    total oxygen demand.

16.   Full form of TSS is      total
suspended solids.

17.  
Full form of TDS is      total dissolved solids.

18.  
Full form of RRR is     reduce, reuse, recycle.

19.  
%age of BOD removed by primary
treatment of waste water is    25
to 50%.

20.  
%age of COD removed by primary
treatment of waste water is …………..

21.  
%age of suspended solids
removed by primary treatment of waste water is    50 to 70%.

22.  
%age of oils and grease removed
by primary treatment of waste water is    65%.

23.  
Chemical used in coagulation is    alum.

24.  
Chemical used in flocculation
is    polyelectrolyte.

25.  
In the aeration tank of
activated sludge process usual retention time is    3 to 8 hours    Hrs.

26.  
General depth of oxidation
ditch is    0.9 to 1.5 m    Mtr.

27.  
Activated carbon is activated
by steam at a temperature    800°C
and 1000°C.

28.  
Activated carbon is activated
by chemical at a temperature   500°C
and 800°C.

29.  
Chemical used for activation of
carbon is   phosphoric acid (P₂O₅) or
zinc chloride (ZnCl₂).

30.  
Full form of RRR in waste
management is   reduce, reuse,
recycle.

31.  
Waste water is evaporated at a
temperature range of    103   to   105   degree Celsius to determine total solid
content.

32.  
To calculate fixed residue
content the waste solid is burned in muffle furnace at temp    550 degree Celsius for    15 to 30    minutes.

33.  
Total soluble solids increase
the    turbidity    of
the receiving water.

34.  
pH requirement of waste water
is    5.5   to    9    for discharge to environment.

35.   Normally-used BOD test procedure requires five
days sample incubation period at temp   20°C.

36.  
Excess of sulfur content can
cause the problem of    bad odor
  in waste water.

37.  
Normally-used BOD test
procedure requires five days sample incubation period at temp   20°C.

38.  
Environment
protection act was passed in the year of    1986.

39.  
Methyl
isocyanate   gas was leaked in Bhopal gas tragedy.

40.   General depth of oxidation ditch is   0.9 to 1.5 m    Mtr.