Maximum threshold number permitted for indicating the odour of public water supplies, is
(A) 1
(B) 2
(C) 3
(D) 4
Description : The dilution ratio at which the odour is hardly detectable is generally called threshold odour number and for public supplies it should not exceed (A) 3 (B) 5 (C) 7 (D) 9
Last Answer : (A) 3
Description : What is the threshold for water indicating scarcity in cubic meters per capita per annum as per UNDP? [a] 500 [b] 1000 [c] 1500 [d] 1200 [e] None of the above
Last Answer : [b] 1000
Description : Hard water for public water supply is discarded because (A) It consumes more soap (B) It contains lot of turbidity (C) It contains pathogenic bacterias (D) It possesses bad taste and odour
Last Answer : (A) It consumes more soap
Description : If the effective plan area of a warehouse is 54 sq. m, and maximum height of piles permitted is 270 cm, the number of cement bags to be stored, is (A) 2000 bags (B) 2200 bags (C) 2400 bags (D) 2700 bags
Last Answer : Answer: Option D
Description : The maximum permissible chloride content in treated water of public water supplies should not exceed (A) 50 P.P.M. (B) 100 P.P.M. (C) 150 P.P.M. (D) 250 P.P.M.
Last Answer : (D) 250 P.P.M.
Description : The maximum permissible nitrites in public water supplies, is (A) Nil (B) 0.5 P.P.M. (C) 1.0. P.P.M. (D) 1.5 P.P.M
Last Answer : (A) Ni
Description : The maximum permissible hardness for public supplies is (A) 95 mg/litre (B) 105 mg/litre (C) 115 mg/litre (D) 125 mg/litre
Last Answer : (C) 115 mg/litre
Description : The maximum permitted loss of head in a rapid sand filter, is (A) 1 m (B) 2 m (C) 3 m (D) 4 m
Last Answer : (C) 3 m
Description : The maximum non-verticality of the bore of a well 200 m deep, may be permitted up to (A) 25 cm (B) 50 cm (C) 75 cm (D) 100 cm
Last Answer : (D) 100 cm
Description : The steepest gradient permitted on roads which, in ordinary conditions, does not exceed, is known (A) Ruling gradient (B) Maximum gradient (C) Exceptional gradient (D) Floating gradient
Last Answer : Answer: Option B
Description : The maximum amount of dust which may be permitted in aggregates is (A) 5% of the total aggregates for low workability with a coarse grading (B) 10% of the total aggregates for low workability with ... of the total aggregates for a mix having high workability with fine grading (D) All the above
Description : The following are modifications made to the IFAC Code to consider Philippine regulatory requirements and circumstances, except a. The period for rotation of the lead engagement partner was changed from ... , were included. d. Payment and receipt of commissions were not permitted in the Philippines
Last Answer : The period for rotation of the lead engagement partner was changed from five to seven years.
Description : Pick up the incorrect statement from the following: (A) Water disinfected with ozone is free from any odour (B) Ozone removes bacterias as well as colour and odour (C) Ozonized water becomes tasteless (D) None of these
Last Answer : (C) Ozonized water becomes tasteless
Description : Pick up the correct statement from the following: (A) For determination of small colour intensities, tintometer is generally used (B) The odour of water sample is generally measured by a term called odour intensity (C) The colour of water sample may be detected by Nessler tube (D) All the above
Last Answer : (D) All the above
Description : Disinfection of drinking water, is done to remove (A) Odour (B) Bacterias (C) Turbidity (D) Colour
Last Answer : (B) Bacterias
Description : Filtration of water is done to remove (A) Colour (B) Odour (C) Turbidity (D) Pathogenic bacteria
Last Answer : (C) Turbidity
Description : Disinfection of drinking water is done to remove (A) Turbidity (B) Odour (C) Colour (D) Bacterias
Last Answer : (D) Bacterias
Description : Aeration of water is done to remove (A) Odour (B) Colour (C) Bacterias (D) Turbidity
Last Answer : (A) Odour
Description : Disinfection of water with ozone is not good because (A) It vanishes before water reaches the consumers (B) It removes the colour, taste and odour from water as bacterias (C) It adds taste to the water (D) It is more efficient than chlorine in killing bacterias
Last Answer : (D) It is more efficient than chlorine in killing bacterias
Description : Which of the following reasons are responsible for adoption of post-chlorination of water? 1. Chlorine demand is reduced. 2. Possibility of taste and odour formation is reduced. 3. Possibility of carcinogenic compounds is reduced. 4. Chloramines ... b) 1, 2 & 3 only (c) 1, & 4 only (d) 2, 3 & 4 only
Last Answer : (c) 1, & 4 only
Description : The permissible pH value for public water supplies may range between (A) 4.5 to 5.5 (B) 5.5 to 6.5 (C) 6.5 to 8.5 (D) 8.5 to 10.5
Last Answer : (C) 6.5 to 8.5
Description : The chloride content of treated water for public supplies should not exceed (A) 100 ppm (B) 150 ppm (C) 200 ppm (D) 250 ppm
Last Answer : (D) 250 ppm
Description : What are the maximum permitted flush volumes for a dual flush WC?
Last Answer : Feel Free to Answer
Description : What are the maximum permitted flush volumes?
Description : What is the maximum time interval permitted between two sessions of Parliament? (1) 4 months (2) 6 months (3) 8 months (4) 9 months
Last Answer : (2) 6 months Explanation: The period during which the House meets to conduct its business is called a session. The Constitution empowers the President to summon each House al such intervals that there ... must meet at least twice a year. In India, the parliament conducts three sessions each year.
Description : What is the maximum surface roughness permitted by ASME B31.1 for the sidewall of ring grooves? a) 63 µ in b) 125 µ in. c) 250 µ in. d) 400 µ in
Last Answer : a) 63 µ in
Description : Maximum curvature permitted on B.G. is (a) 8 degree (b) 10 degree* (c) 12 degree (d) 16 degree
Last Answer : (b) 10 degree*
Description : Pick up the correct statement from the following regarding the pressure conduits: (A) Pressure conduits are permitted to run ¾th full (B) Pressure conduits are always laid along down grades ... ) The hydraulic gradient line always coincides the invert of the conduit (D) None of these
Last Answer : (D) None of these
Description : When drainage is permitted under initially applied normal stress only and full primarily consolidation is allowed to take place, the test is known as (A) Quick test (B) Drained test (C) Consolidated undrained test (D) None of these
Last Answer : (C) Consolidated undrained test
Description : If drainage is permitted throughout the test, during the application of both normal, and shear stresses so that full consolidation occurs and no excess pore pressure is set up at any stage of the test, is ... (A) Quick test (B) Drained test (C) Consolidated undrained test (D) None of these
Description : If the rate of change of grade permitted along a vertical curve is r and total change of grade is g%, the length L of the curve to be provided, is (A) L = (r × 100/g) m (B) L = (g × 100/r) m (C) L = (r + g) × 100m (D) L = [100/(r + g)] m
Description : Deviation of the alignment of a trace cut may be permitted in areas involving (A) Land slides (B) Sand dunes (C) Dens (D) None of these
Last Answer : Answer: Option A
Description : In case of a multi-lane road, overtaking is generally permitted (A) From right (B) From left (C) From both sides right and left (D) Not at all
Last Answer : Answer: Option C
Description : Pick up the correct statement from the following: (A) Various geometric design features and generally guided by ruling design speed (B) The design speed for a given highway should preferably be uniform (C) Abrupt change in the design speed should not be permitted (D) All the above
Description : It takes 0.4 hrs to drive from the garage to the head of the route, 0.4 hrs to drive between the route head and disposal site and 0.25 hrs to return from the disposal site. It takes 0.2 hrs to offload a truck at the ... loading time as 30 minutes. (a) 4.15 hrs (b) 4.25 hrs (c) 4.75 hrs (d) 4.85 hrs
Last Answer : (a) 4.15 hrs
Description : Consider the following statements. In case of flood routing in a river channel by Muskingum method, the coefficient x represents : 1. A dimensionless constant indicating the relative importance of inflow and outflow in determining storage ... , 3 and 4 only (c) 1, 2 and 3 only (d) 2, 3 and 4 only
Last Answer : (b) 1, 3 and 4 only
Description : Maximum permissible colour for domestic water supplies, based on Cobalt scale, is (A) 5 P.P.M. (B) 10 P.P.M. (C) 15 P.P.M. (D) 20 P.P.M.
Last Answer : (D) 20 P.P.M.
Description : The maximum permissible colour for domestic supplies based on cobalt scale, is (A) 5 ppm (B) 10 ppm (C) 15 ppm (D) 20 ppm
Last Answer : (D) 20 ppm
Description : Substrate concentration at which an enzyme attains half its maximum velocity is (A) Threshold value (B) Michaelis-Menton constant (C) Concentration level (D) None of these
Last Answer : Answer : B
Description : Threshold Limit Value (TLV) is the maximum allowable concentration (i.e. safe limit) of pollutants in air. Safe limit for SO2 in air is __________ ppm. (A) 5 (B) 500 (C) 1000 (D) 2000
Last Answer : (A) 5
Description : Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million). (A) 0.002 (B) 0.2 (C) 1.2 (D) 4.8
Last Answer : (B) 0.2
Description : Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm. (A) < 1 (B) 10-100 (C) 100-200 (D) 100-1000
Last Answer : (A) < 1
Description : In respect to Lidocaine 2% with 1:100000 vasoconstrictor, A. The toxic threshold is 22ml B. 8.8 ml is the maximum you can give in one session
Last Answer : A. The toxic threshold is 22ml
Description : A period in the ontogeny of crop at which maximum crop weed competition occurs is called a). Economic threshold b). Gain threshold c). Competitive threshold d). None
Last Answer : d). None
Description : The period at which maximum crop weed competition occurs is a). Critical period b). Dormancy c). Flaming d).Threshold
Last Answer : a). Critical period
Description : Pick up the correct statement from the following: (A) The minimum frequency of light for which no electrons are emitted, is called threshold frequency (B) Polarising angle of glass is 57.5° (C) At the polarising angle, the reflected and refracted rays are orthogonal (D) All the above
Description : In water treatment plant, use of chloramines ensures (1) taste and odour control (2) weed control in reservoirs (3) disinfection (4) removal of permanent hardness
Last Answer : (3) disinfection Explanation: The particular type of chloramine used in drinking water disinfection is called monochloramine. Chloramine is chiefly a secondary disinfectant that are added to water that has already been disinfected with a primary disinfectant, often chlorine
Description : If water smells bad, then that odour can be removed by adding – (1) alum (2) bleach (3) activated carbon (4) deactivated nitrogen
Last Answer : (3) activated carbon Explanation: Adding powdered activated carbon to water or using of granular activated carbon (GAC) in the water filter can remove bad taste and foul odour. Powdered activated ... the activated carbon and retained, but the material doing the adsorption does not change size.
Description : If water smells bad, then that odour can be removed by adding - (1) alum (2) bleach (3) activated carbon (4) deactivated nitrogen
Last Answer : (3) activated carbon Explanation: Adding powdered activated carbon to water or using of granular activated carbon (GAC) in the water filter can remove bad taste and foulodor.
Description : Presence of bacteria in potable (drinking) water causes (A) Turbidity (B) Disease (C) Bad odour (D) Bad taste & colour
Last Answer : (B) Disease