| 1 |
Pollution of water is indicated by all except |
| |
a |
chloride |
| |
b |
fluoride |
| |
c |
nitrate |
| |
d |
nitrite |
| 2 |
The residual chlorine content of drinking water should be |
| |
a |
0.5 ppm |
| |
b |
0.6 ppm |
| |
c |
0.8 ppm |
| |
d |
1.2 ppm |
| 3 |
The size of sand particles in slow filter is |
| |
a |
0.15to0.35mm |
| |
b |
0.36to0.45mm |
| |
c |
0.48to0.59mm |
| |
d |
0.61to0.79mm |
| 4 |
Size of sand particle in rapid filter is |
| |
a |
0.6to2mm |
| |
b |
2.5to3 mm |
| |
c |
4to 5.2 mm |
| |
d |
5.4 to 6 mm |
| 5 |
Following are true regarding chlorination except |
| |
a |
residual chlorine of 0.5 mg per lit |
| |
b |
contact period 30 mts |
| |
c |
water should not be turbid |
| |
d |
chlorine demand shold be estimated |
| 6 |
A chloride level of------is acceptable by WHO |
| |
a |
0.1mcg/L |
| |
b |
0.5mg/L |
| |
c |
10mg/l |
| |
d |
200mg/l |
| 7 |
Residual chlorine in chlorination of water should be |
| |
a |
1 mg per lit. after 1 hour |
| |
b |
1 mg per lit after half an hour |
| |
c |
0.5 mg per lit after 1 hour |
| |
d |
0.5 mg per lit after half hour |
| 8 |
Contact period for chlorination of water is |
| |
a |
15 mts |
| |
b |
30 mts |
| |
c |
1 hr |
| |
d |
2 hrs |
| 9 |
The prescribed chloride content of drinking water should be below |
| |
a |
100mg/lit |
| |
b |
200mg/lit |
| |
c |
300mg/lit |
| |
d |
500mg/lit |
| 10 |
The free chlorine in chlorinated water shold be |
| |
a |
0.2mg/lit |
| |
b |
200mg/lit |
| |
c |
0.5mg/lit |
| |
d |
0.75mg/lit |
| 11 |
In Ortho toludine test all are correct except |
| |
a |
free chlorine is estimated |
| |
b |
0.1 ml of reagent is used for 1 ml of water |
| |
c |
yellow colour |
| |
d |
read in 10 seconds |
| 12 |
In an epidemic of bacillary desentery residual chlorine in ppm should be |
| |
a |
0.1 |
| |
b |
0.5 |
| |
c |
0.8 |
| |
d |
1 |
| 13 |
All of following are false about bleaching powder except |
| |
a |
contains 20% available chlorine |
| |
b |
20% solution use for disinfection of feces |
| |
c |
unstable compound on storage |
| |
d |
not use for disinfection of feces and urine |
| 14 |
Organism not indicative of fecal pollution is |
| |
a |
E.coli |
| |
b |
Cl. Perfrigens |
| |
c |
streptococcus |
| |
d |
staphylococcus |
| 15 |
Water is considered potable if there is |
| |
a |
noE.coli per 100 ml of water |
| |
b |
1 E.coli per 100 ml of water |
| |
c |
10 E.coli per 100ml of water |
| |
d |
100 E.coli per 100 ml of water |
| 16 |
True about purity of deep well water is all except |
| |
a |
chloride-200meq/l |
| |
b |
ammonia-0.05meq/l |
| |
c |
nitrites-0.01meq/l |
| |
d |
albuminoid ammonia |
| 17 |
Nitrate level in water should not be more than ___ mg /lit |
| |
a |
0.5 |
| |
b |
1 |
| |
c |
2 |
| |
d |
4 |
| 18 |
The presence of the following substance reveals the fact of postcontamination of water |
| |
a |
chlorides |
| |
b |
nitrates |
| |
c |
sulphates |
| |
d |
nitrites |
| 19 |
Water requirement per day per head is |
| |
a |
150 200 litres |
| |
b |
100 litres |
| |
c |
250 litres |
| |
d |
300 500litres |
| 20 |
sodium permutit is used for |
| |
a |
disinfection of water |
| |
b |
sterilisation of water |
| |
c |
removal of hardness of water |
| |
d |
testing residual chlorine |
| 21 |
Presumptive count includes |
| |
a |
no E. coli |
| |
b |
coliforms but not only E.coli |
| |
c |
gram negative bacilli |
| |
d |
any bacteria |
| 22 |
A water sample is said to be moderately hard when hardness producing ion is about |
| |
a |
50 ppm |
| |
b |
50to150ppm |
| |
c |
150to300ppm |
| |
d |
300ppm |
| 23 |
Safe limit of flourine in drinking water is ___ mg per lit. |
| |
a |
0.5 to 0.8 |
| |
b |
0.1 to 0.3 |
| |
c |
1 |
| |
d |
1.5 |
| 24 |
The maximum permissible flouride content of water is |
| |
a |
0.8 ppm |
| |
b |
2 ppm |
| |
c |
3 ppm |
| |
d |
5 ppm |
| 25 |
The amt. Of good quality bleaching poeder required for chlorinating a round well measuring 4 mtrs. Diameter and depth of water column 6 mtrs. To get IPPM of residual chlorine when the horrok's test gives definite blue colour in the 3rd cup onwards is ---gms |
| |
a |
993.8 |
| |
b |
99.38 |
| |
c |
9.938 |
| |
d |
0.9939 |
| 26 |
The best indicator of level of air pollution is |
| |
a |
H2 |
| |
b |
CO2 |
| |
c |
N2 |
| |
d |
SO2 |
| 27 |
Air pollution may cause |
| |
a |
dermatitis |
| |
b |
carcinoma bronchus |
| |
c |
bronchiectasis |
| |
d |
pneumonia |
| 28 |
Soiling index is an indicator of |
| |
a |
air pollution |
| |
b |
water pollution |
| |
c |
fecal pollution |
| |
d |
sand pollution |
| 29 |
Corrected effective temp. is labelled as comfortable |
| |
a |
between 70to76 |
| |
b |
between 77to80 |
| |
c |
between 81to82 |
| |
d |
above 83 |
| 30 |
The electroststic precipitator are used in prevention of |
| |
a |
radiation risk |
| |
b |
air pollution emmission |
| |
c |
mosquito nuisence |
| |
d |
diffuse vibrations |
| 31 |
The cancerogenic material that has very long latent period is |
| |
a |
benzopyrine |
| |
b |
vinyl chloride |
| |
c |
asbestos |
| |
d |
estrogens |
| 32 |
The acceptable level for physical comfort is |
| |
a |
|
| |
b |
|
| |
c |
|
| |
d |
|
| 33 |
Soiling index is an indicator of |
| |
a |
water pollution |
| |
b |
air pollution |
| |
c |
sand pollution |
| |
d |
excreta pollution |
| 34 |
Recommanded reflection factors include each of the following, except |
| |
a |
cellings 60% |
| |
b |
roofs 50 % |
| |
c |
Walls 50 % to 60 % |
| |
d |
furnotures 30 to 40% |
| 35 |
It is recommanded that in living rooms , daylight factor shoulad be at least |
| |
a |
0.01 |
| |
b |
0.02 |
| |
c |
0.03 |
| |
d |
0.04 |
| 36 |
Light requirement in watch manufacturing company is |
| |
a |
20000 -3000lux |
| |
b |
5000-10000lux |
| |
c |
100000 -20000lux |
| |
d |
50000lux |
| 37 |
Under limit of tolarance of noise per day |
| |
a |
10dB |
| |
b |
85dB |
| |
c |
90dB |
| |
d |
100dB |
| 38 |
Exposure to noise -----causes permanent hearing loos |
| |
a |
90db |
| |
b |
100db |
| |
c |
125db |
| |
d |
160db |
| 39 |
Auditory fatigue occurs at ___Hz |
| |
a |
2000 |
| |
b |
3000 |
| |
c |
4000 |
| |
d |
8000 |
| 40 |
A rupture of ear drum may actually occur at a decibel level above |
| |
a |
40 |
| |
b |
80 |
| |
c |
120 |
| |
d |
160 |
| 41 |
Tympanic membrane ruptures at a sound level above |
| |
a |
120 dB |
| |
b |
55 dB |
| |
c |
85 dB |
| |
d |
160dB |
| 42 |
Kata thermometer is used to measure |
| |
a |
maximum temp. |
| |
b |
minimum temp. |
| |
c |
radiant heat |
| |
d |
cooling power of air |
| 43 |
The cause of discomfort in an overcrowded , poorly ventilated room are all except |
| |
a |
increase in temperature |
| |
b |
increase in humidity |
| |
c |
increase in CO2 |
| |
d |
decrease in air change |
| 44 |
The disposal of night soil and refuge by |
| |
a |
chemical sterilisation |
| |
b |
burning |
| |
c |
composting |
| |
d |
none of these |
| 45 |
Pit latrine has depth of ___ ft. |
| |
a |
2 to 4 |
| |
b |
4 to 6 |
| |
c |
6 to 10 |
| |
d |
10 to 12 |
| 46 |
A drinking water well must be ___ ft. away from the source of contamination |
| |
a |
25 |
| |
b |
50 |
| |
c |
75 |
| |
d |
100 |
| 47 |
Accepted depth of water in water seal latrine should not be more than ____ cm |
| |
a |
2.5 |
| |
b |
4 |
| |
c |
5 |
| |
d |
7.5 |
| 48 |
Strength of sewage is expressed terms of |
| |
a |
biological oxygene demand |
| |
b |
chemical oxygene demand |
| |
c |
suspended solids |
| |
d |
E.coli count |
| 49 |
Hard tick transmit |
| |
a |
oroyo fever |
| |
b |
oriental sore |
| |
c |
leishmaniasis |
| |
d |
tick typhus |
| 50 |
A type of tertiary waste water treatment process is |
| |
a |
reverse osmosis |
| |
b |
sedimentation |
| |
c |
both |
| |
d |
neither |
| 51 |
In National Goitre control programme iodine suplementation is implemented in |
| |
a |
sub himalayas area |
| |
b |
sub himalayas plus hilly area |
| |
c |
sub himalayas area plus northern area |
| |
d |
whole of India |
| 52 |
Gover ment of India accepted policy of iodisation of entire ina phase manner by |
| |
a |
1990 |
| |
b |
1992 |
| |
c |
2000 |
| |
d |
none of above |
| 53 |
A common calculation used in assesing the effect of waste on the quality of the water being tested is |
| |
a |
entrophication |
| |
b |
biological oxygene demand |
| |
c |
both |
| |
d |
neither |
| 54 |
An inexpensive and efficient method of sewage disposal for a small community is |
| |
a |
river outfall |
| |
b |
oxidatin pond |
| |
c |
trickling filter |
| |
d |
activated sludge |
| 55 |
DDT acts as |
| |
a |
contect poison |
| |
b |
repellant |
| |
c |
stomoch poison |
| |
d |
all of above |
| 56 |
A number of studies have showen that insecticide DDT when ingested by an animal is more than likely to concentrate in the |
| |
a |
fatty tissue |
| |
b |
brain |
| |
c |
thyroid |
| |
d |
bones |
| 57 |
The biological trasmisiion in case of filarisis is |
| |
a |
cyclopropagative |
| |
b |
cyclodevelopmental |
| |
c |
propagative |
| |
d |
none of above |
| 58 |
Dose of DDT for effective control of mosquito is |
| |
a |
1 to 2 gm per m2 |
| |
b |
1 mg per m2 |
| |
c |
2 to 4 mg per m2 |
| |
d |
2 to 4 gm per m2 |
| 59 |
Diseases spread by mosquito are |
| |
a |
malaria |
| |
b |
toxoplasmosis |
| |
c |
histoplasma |
| |
d |
sleeping sickness |
| 60 |
All true abour anpheles mosquito |
| |
a |
eggs are boat shapedand provided with lateral floats |
| |
b |
larva rest parelle to water surface |
| |
c |
larva siphon tube |
| |
d |
pupae have short and broad siphon tube |
| 61 |
Nuisance mosquito is |
| |
a |
Anapheles |
| |
b |
Culex |
| |
c |
Aedes |
| |
d |
Teste fly |
| 62 |
Tiger mosquito are |
| |
a |
anopheles larva only |
| |
b |
culex |
| |
c |
ades |
| |
d |
mansoides |
| 63 |
Culex mosquito can transmit |
| |
a |
malaria |
| |
b |
kala azar |
| |
c |
dengue fever |
| |
d |
none of above |
| 64 |
Paris green is larvicidal for |
| |
a |
anopheles |
| |
b |
culex |
| |
c |
ades |
| |
d |
none |
| 65 |
Malathion spray is effective for ____ months |
| |
a |
1 |
| |
b |
2 |
| |
c |
3 |
| |
d |
4 |
| 66 |
Paris green is a type of |
| |
a |
repellent |
| |
b |
fumigent |
| |
c |
stomach poison |
| |
d |
contect poison |
| 67 |
Diethyl tolumide is an effective |
| |
a |
larvicidal |
| |
b |
agent against larve of pupae |
| |
c |
repellent |
| |
d |
space spray |
| 68 |
Diseases trasmitted by sand fly are all except |
| |
a |
relapsing fever |
| |
b |
kala azar |
| |
c |
oriental sore |
| |
d |
oraya fever |
| 69 |
Epidemic typhus is transmitted by |
| |
a |
flea |
| |
b |
mite |
| |
c |
tick |
| |
d |
louse |
| 70 |
Inhalation of cotton dust causes |
| |
a |
byssinosis |
| |
b |
bagassosis |
| |
c |
anthracosis |
| |
d |
mculdy lung |
| 71 |
Endemic typhus is transmitted by |
| |
a |
flea |
| |
b |
mite |
| |
c |
tick |
| |
d |
louse |
| 72 |
x |
| |
a |
10%acetic acid |
| |
b |
5%acetic acid |
| |
c |
1% propionic acid |
| |
d |
2% propionic acid |
| 73 |
Transovarian transmision of infection occure in |
| |
a |
fleas |
| |
b |
ticks |
| |
c |
mosquitoes |
| |
d |
sand fly |
| 74 |
Rocky mountain spotted fever is transmitted by |
| |
a |
flea |
| |
b |
mite |
| |
c |
tick |
| |
d |
louse |
| 75 |
Transmitting agent of KFD is |
| |
a |
flea |
| |
b |
mite |
| |
c |
tick |
| |
d |
louse |
| 76 |
Achild is brought to the PHC with scabies which of the following is not advised |
| |
a |
parentera antibiotics treat the other members of the family |
| |
b |
give bath |
| |
c |
give bath and apply benzyl benzoate |
| |
d |
Bed linen to be boiled |
| 77 |
Drinking water is best made free of cyclops by |
| |
a |
filtration |
| |
b |
boiling |
| |
c |
chlorination of wells every week |
| |
d |
none of above |
| 78 |
% of para para isomer in DDT |
| |
a |
20-30% |
| |
b |
40-50% |
| |
c |
60-70% |
| |
d |
70-80% |
| 79 |
The following are organophophosphorous insecticides except |
| |
a |
fenthion |
| |
b |
parathion |
| |
c |
chlorpyriphios |
| |
d |
pyrethrum |
| 80 |
The following are found resistant to DDT except |
| |
a |
phlebotomus |
| |
b |
culex fatigans |
| |
c |
anopheles stephensi |
| |
d |
musca domestica |
| 81 |
The average of cyclops is about |
| |
a |
1mths |
| |
b |
2mths |
| |
c |
3mths |
| |
d |
4mths |
| 82 |
The concentration of abate recommended for killing cyclops is-------mg/L |
| |
a |
2 |
| |
b |
1 |
| |
c |
5 |
| |
d |
0.5 |
| 83 |
Abate is |
| |
a |
carbamate |
| |
b |
cyanide cpd |
| |
c |
orgenophosphorous cpd |
| |
d |
orgenochloride cpd |
| 84 |
Which of the following is an organochlorine compound |
| |
a |
gardona |
| |
b |
dicapthon |
| |
c |
propoxur |
| |
d |
kepone |
| 85 |
Which type of worker is commonly affected in Bysinossis |
| |
a |
weavers |
| |
b |
dyers |
| |
c |
spinners |
| |
d |
growers |
| 86 |
Which is an insecticide of vegetable origin |
| |
a |
abate |
| |
b |
BHC |
| |
c |
propoxur |
| |
d |
Pyrethrum |
| 87 |
Least toxic organophosphrous compond is |
| |
a |
DDT |
| |
b |
Paris green |
| |
c |
Malathion |
| |
d |
Parathion |
| 88 |
Residual effect of malathion is for |
| |
a |
3mths |
| |
b |
6 mths |
| |
c |
9mths |
| |
d |
12 mths |
| 89 |
Which of the following is an organo phosphate |
| |
a |
DDT |
| |
b |
aldrin |
| |
c |
dueldrin |
| |
d |
malathion |
| 90 |
Duration maternal benefit under ESI act |
| |
a |
4 wk |
| |
b |
8 wk |
| |
c |
12 wk |
| |
d |
24 wk |
| 91 |
Provisions of 1975 ESI act will not apply to |
| |
a |
suger factories |
| |
b |
cinema theatres |
| |
c |
hotels |
| |
d |
|
| 92 |
Which one of the following diseases is not eligible for the extended benefit of 309 days in ESI scheme |
| |
a |
leprosy |
| |
b |
mental diseases |
| |
c |
aplastic aneamia |
| |
d |
TB |
| 93 |
In the statement benefit under the ESI act to a insured person in the case of sickness is payable for a continuous maximum period of X days ,the daily rate being Y of the average daily wages, X and Y stand respectively for |
| |
a |
91 and 5/12 |
| |
b |
91and7/12 |
| |
c |
181and7/12 |
| |
d |
181and5/12 |
