Air & Noise Pollution and Sewage & Liquid Waste Disposal MCQ Question and Answer | ITI HSI

NCVT AITT (All India Trade Test) CBT exam Practice ITI HSI(Health Sanitary Inspector) Trade MODULE 4 – Air & Noise Pollution and Sewage & Liquid Waste Disposal 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.

Depending upon their use, the traps may again be of types.

1. One type
2. Two type
3. Three type
4. Four type

2.

Depending upon their shapes, the traps may be of types?

1. One type
2. Two type
3. Three type
4. Four type

3.

Depending upon their depth, the manhole may be classified as :

1. One
2. Two
3. Three
4. Four

4.

In a ventilating column, a cowl provides :

1. To prevent entry of four gases
2. To prevent entry to objects
3. To prevent the exit of heat
4. To prevent the exit of gases

5.

For Indian cities like kolkatta, the per capita sewage production may be of the order of :

1. 500 liters
2. 200 liters
3. 100 liters
4. 50 liters

6.

The width of the trench at the bottom is generally kept can more than the dia of the present sewer pipe.

1. 10
2. 15
3. 25
4. 50

7.

All the sewer pipes are generally laid starting from .

1. Outfall ends
2. Starting ends
3. Middel ends
4. Submidel ends

8.

When chlorine is added to the treated sewage as a final step in its treatment , it is called as :

1. Post Chlorination
2. Pre chlorination
3. Super chlorination
4. Plane chlorination

9.

House connection and lateral sewar are widely made of :

1. Reinforced cement concrete
2. Plain cement concrete
3. Glazed stoneware
4. Asbestos cement

10.

The maximum spacing of manhole on sewer having diameter more than 1.5m is:

1. 75 cm
2. 150 cm
3. 200 cm
4. 300 cm

11.

The detention time in the oxidation period is usually .

1. 2 to 5 week
2. 2 to 6 week
3. 4 to 10 week
4. 5 to 12 week

12.

All are physiclogical changes caused by noise except?

1. Rise in blood pressure and heart rate
2. Pupinary dilatation
3. Rise in intracranial
4. Reduced night vision

13.

For good speech intelligibility speech same level must exceed the speech interference level by?

1. 5 db
2. 12 db
3. 30 db
4. 45 db

14.

All are noise pollution control can be achieved by all except.

1. Control of noise of source
2. Protection of exposed persons
3. Legislation
4. Improve in housing sanitation

15.

A Nupture of an ear drum may occur at the noise level of .

1. 120 db
2. 160 db
3. 90 db
4. 80 db

16.

International network of laboratories for the monitoring and study of air pollution centre in India is located at.

1. Mumbai
2. Delhi
3. Nagpur
4. Calcutta

17.

Govt. of india have inacted, The air (Prevention and control of pollution ) act in year.

1. 1971
2. 1979
3. 1981
4. 1986

18.

Soiling index is measure of

1. Soil pollution
2. Water pollution
3. Noise pollution
4. Air pollution

19.

Kata thermometer measures.

1. Air temperature
2. Air temperature and humidity
3. Air temperature and humidity and air movement
4. Air velocity

20.

The method found to be effective for disinfection of air in operation theators and infections diseases wards is.

1. Chemical mist
2. Ultra voilet lamps
3. Containment
4. Bleaching powder

21.

Which of the following is natural ways to purify air at home except?

1. Bleaching powder
2. Beas wax candles
3. Salt lamp
4. Activated charcoal

22.

is a device used for measuring the humidity of air?

1. Thermometer
2. Barometer
3. Hydrometer
4. Altimeter

23.

The most dangerous pollution is vehicular outflow is.

1. Carbon monoxide
2. Sulpher dioxide
3. Carbon dioxide
4. Ozone

24.

Which one of the following gases is most signification as air pollution?

1. Carbon di oxide
2. Oxygen
3. Nitrogen
4. Sulphor dioxide

25.

The best parameter to measure air pollution is.

1. Sulphor dioxide
2. Carbon dioxide
3. Carbon monoxide
4. Nitrogen dioxide

26.

What are the two most major gases produced by people?

1. Carbon dioxide and methane
2. Methane and flourine
3. Methane and nitrous oxide
4. Carbon dioxide and nitrous oxide

27.

Most common and widely distribute air pollution is.

1. Sulpher dioxide
2. Carbon monoxide
3. Lens
4. Nitrogen dioxide

28.

Factor responsible for air pollution and water vapour trappes at the lower level of atmosphere smog is

1. Lack of air movement
2. Increase of humidity
3. Temperature inversion
4. Heat bland phenomenon

29.

What is greenhouse gas?

1. Oxygen that helps plants grow
2. The warmth you feel from the sun
3. Gases that traps heat in the atmosphere
4. The oxygen the plants produce

30.

What is global warming?

1. The sun getting closer to the earth
2. Cow producing too much methane and mixing grass and trees
3. Too many people living in the india
4. When there are more gases in the atmosphere, so more heat is trappe which makes the earth warmer

31.

The optimum floor space requirement per person for adequate ventilation is.

1. 50-100 sq.ft
2. 100-150 sq.ft
3. 150-200 sq.ft
4. 7200 sq.ft

32.

The natural ventilation is maintained by all except.

1. Prefiation and aspiration
2. Diffusion
3. Inequality of temperature
4. Plenum ventilation

33.

Which of the following statement is not true about F10 space criteria for ventilation.

1. Floor space per person is even more important then cubic space
2. Height over 10 to 12 feet are not taken into account
3. The optimum floor space requirement per person is 150 to 200 sq.ft
4. The optimum floor space requirement per person is 50 to 100 sq.ft

34.

The number of air changes in work room and assemblies for adequate ventilation is.

1. 1-2 / hour
2. `2-3 / hour
3. 4-6 /hour
4. 76 / hour

35.

The % of nitrogen in air is.

1. 20%
2. 16%
3. 78%
4. 98.03%

36.

Ventilation in homes is necessary so the.

1. Ceiling fans can be avoided
2. Less heat persists
3. The aroma of food moves out
4. Polluted air moves out

37.

Siling psychrometer is used to measure.

1. Air velocity
2. Rain fall
3. Relative humidity
4. Radiant heat

38.

The cooling range of standard kater thermometer is between.

1. 90-85 deg. F
2. 100-95 deg. F
3. 130-125 deg. F
4. 150-145 deg. F

39.

The temperature which air have to be cooled for saturation to occur represents?

1. Dew point
2. Relative humidity
3. Cooling power of air
4. Heat stress intex

40.

Air pollution may be caused by?

1. Human activities
2. Natural disastrous events
3. Human activities and natural disastrous event
4. Volcanism

41.

The % of carbon dioxide in air is.

1. 0.03%
2. 1.01%
3. 10.00%
4. 15.00%

42.

Which of the following is not anthropogenic cause of air pollution?

1. Burning of fossil fuels
2. Burning of firewood
3. Agricultural activities
4. Burning of forests due to lightening

43.

Carbon monoxide is hazardous to health because.

1. It causes loss of sense of smell
2. It is carcinogenic in nature
3. It reduce oxygen carrying capacity of blood
4. It may cause consensitivity

44.

Longer exposure to No2 even in small concentrations may cause disease pertaining.

1. Liver
2. Lungs
3. Kidneys
4. Heart

45.

Heavy loding of pollen grains in air may cause.

1. Anaemia
2. typhoid
3. high fever
4. Influenza