Water Sanitation & Its Purification Process MCQ Question and Answer | ITI HSI

NCVT AITT (All India Trade Test) CBT exam Practice ITI HSI(Health Sanitary Inspector) Trade MODULE 2 – Water Sanitation & Its Purification Process MCQ (Multiple choice Question) online. Also you can practice mock test exam online

I.T.I HSI(Health Sanitary Inspector) Trade MCQ also useful for competitive exam like PSU Job exam As well as Government Job Exam, Apprentice job.

1.

Aeration of water is done to remove.

1. Odour
2. Colour
3. Bacterias
4. Turbidity

2.

How many types of domestic overhand storages tanks are used?

1. 1
2. 2
3. 3
4. 4

3.

In which of the following distribution system clean water flows entirely under gravity?

1. Gravity system
2. Pressure system
3. Combined gravity and pumping system
4. Pumping system

4.

What is one word for an artificial lake made by building dam across river?

1. Pond
2. Reservoir
3. Lake
4. Stream

5.

What is the aim of pipe system in the dairy industry?

1. Facilitate product flow
2. Fouling
3. Storage
4. Pasteurization

6.

Which of the following reduce valves with constant outlet pressure are used?

1. Separator
2. Pasteurization
3. Homogenizer
4. Fining machine

7.

Which of the following is required for replacing plumping permit?

1. Water closet
2. Water heater
3. Bathing unit
4. Fall cet

8.

How many types of pumps are there?

1. 1
2. 2
3. 3
4. 4

9.

What is the minimum diameter of pipes used for drainage of waste water?

1. 50 mm
2. 75 mm
3. 100 mm
4. 125 mm

10.

Which material is used for pipes that conduct water and air line?

1. Stainless steel
2. Copper
3. Ceramic
4. Plastic

11.

The determination of both free and combines chlorine in water with speed and accuracy is called.

1. Ultraviolet radiation
2. Widal test
3. Orthotolidine test
4. Orthotolidine- arsenite test

12.

Which of the following method is used for the estimation of chlorine demand of water?

1. Horrock's apparatus
2. Double pot method
3. Chlorometer
4. Berkefeld filter

13.

The colour developed in horrock's apparatus for testing chlorine demand of water sample?

1. Blue
2. Red
3. Pink
4. Yellow

14.

The rate of filteration in stone sand filter is.

1. 0.1 to 0.4 m3/hr/m2
2. 0.5 to 0.8 m3/hr/m2
3. 1 to 4 m3/hr/m2
4. 5 to 15 m3/hr/m2

15.

By what percentage a water sedimentation tank, under normal condition, can remove suspended impurities?

1. 25%
2. 55%
3. 70%
4. 90%

16.

What is the detention time for a water redimentation tank?

1. 1-2 hr
2. 2-4 hr
3. 4-8 hr
4. 16-24HR

17.

Which of the following is effect of water pollution?

1. Dissuption of food chair
2. Destruction of ecosystem
3. Decrease in flow of water
4. Disruption of food chair and destruction of ecosystem

18.

What causes max water pollution?

1. Detergents
2. Pesticides
3. Industrial wastes
4. Ammonia

19.

What is water with hardness of 150-300 mg/lit is termed as:

1. Soft
2. Moderately hard
3. Hard
4. Very hard

20.

Which of the following is not a source of ground water contamination?

1. Agricultural products
2. Land fills
3. Underground water storage tank
4. Industrial liquid waste production

21.

How can pollution of water bodies be controllled?

1. Releasing industrial effluents into water bodies
2. Dumbing waste in water bodies
3. Throwing plastic into water bodies
4. Treatment of sewage waste before disposal

22.

Water pollution occurs when are discharging into water bodies without treatment to get rid of harmful compounds?

1. Sources
2. Rain water
3. Food items
4. Pollutants

23.

Water (prevention and control of pollution) Act was passed in year?

1. 1956
2. 1958
3. 1974
4. 1985

24.

Most common cause of water pollution?

1. Industrial and trade waste
2. Agricultural pollutants
3. Radioactive substances
4. Domestic waste

25.

During an epidemic of chlolera, well should be disinfection ideally?

1. Every day
2. 2 day
3. 3 day
4. 1 week

26.

How much approx percent of available chlorine does the bleaching powder contain?

1. 10
2. 30
3. 20
4. 50

27.

The most effective and cheapest methods of disinfecting well is.

1. Potassium permanganate
2. Ozonation
3. Ultraviolet radiation
4. Bleaching powder

28.

Double pot method is for?

1. Chlorination of tubewell
2. Removal of hardness
3. Sewage disposal
4. Chlorination of well

29.

All of the following are done during chlorination of well except?

1. Put bleaching powder directly into the well
2. Contact period of one hour
3. Estimation of chlorine demands
4. Estimation of volume of water

30.

To detect the turbility of the order of 0- 1000 ppm, the instrument used in

1. Turbidimeter
2. Jackson turbidimeter
3. Baylis turbidimeter
4. Hallige turbidimeter

31.

The strainer type tubewell is unsuitable for?

1. Coarse gravell
2. Fine sandy layer
3. Clean gravels
4. Coarse sandy

32.

Nitrite level in water should not be more than?

1. 50 mg/l
2. 25 mg/l
3. 3 mg/l
4. 0.3 mg/l

33.

Maximum permissible chloride level in drinking water?

1. 200 mg/l
2. 500 mg/l
3. 600 mg/l
4. 1000 mg/l

34.

Maximun permissible total dissolves solids in drinking water?

1. 200 mg/l
2. 500 mg/l
3. 600 mg/l
4. 1000 mg/l

35.

Maximum permission selenium in drinking water?

1. 0.01 mg/l
2. 0.05 mg/l
3. 0.10 mg/l
4. 1.00 mg/l

36.

MPN-Multiple tube method is used for?

1. Detection of colifrom organism in water sample
2. To check adequacy of pasteurization for milk
3. To do colony count of bacteria
4. To check food adulterants

37.

The test for turbidity describes what characteristics of water?

1. Odour
2. Mineral concentration of the water
3. Suspended material in the water
4. Metal concentration of the water

38.

Which of the following is considered an adequate water supply/head/day in urban area?

1. 100-150 liter
2. 200-250 liter
3. 150-200 liter
4. 50-100 liter

39.

The requirement of water per capital per day is.

1. 90 lit
2. 120 lit
3. 250 lit
4. 400 lit

40.

45-90 liter of water per person per day is provided in?

1. Office building
2. Hostels
3. Hotels
4. Nurse homes

41.

Which of following is a source of water from the ground?

1. Reservoir
2. Aquifer
3. Lake
4. Rainfall

42.

Ground water is accessed by.

1. Drip irrigation
2. Check bunds
3. Drinking wells
4. Constructing canals

43.

What is palar pani?

1. Rain water
2. River water
3. Spring
4. Milk

44.

Which of the following is the major source of fresh water which is available in lndia?

1. Ground water
2. Ocean water
3. River water
4. Pond water

45.

Which of the following is a clean liquid diet?

1. Tender coconut water
2. Thick vegetable soup
3. lassi
4. Milk

46.

The following disease is water borne?

1. Typhoid
2. tuberculosis
3. Scurvy
4. Hepatitis-B

47.

Which one of the following is not a water borne disease?

1. Ginrdiasis
2. Kala azor
3. Poliomyelitis
4. Weils disease

48.

Excess of nitrate in drinking water can lead to?

1. Methaemoglobinaemi a
2. Enclphalomalacia
3. Hypothyroidism
4. Nephrotoxicity