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 : 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 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 nitrate concentration in domestic water supplies, is generally limited to (A) 10 ppm (B) 15 ppm (C) 30 ppm (D) 45 ppm
Last Answer : (D) 45 ppm
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 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 : In case of foundations on sandy soil, maximum permissible differential settlement, is usually limited to (A) 15 mm (B) 25 mm (C) 35 mm (D) 45 mm
Last Answer : Answer: Option B
Description : The maximum permissible size of aggregates to be used in casting the ribs of a slab, is (A) 5 mm (B) 7.5 mm (C) 10 mm (D) 15 mm
Last Answer : Answer: Option C
Description : The permissible color for domestic water supply is __________ ppm. (A) 1 (B) 20 (C) 100 (D) 1000
Last Answer : (B) 20
Description : The maximum permissible differential settlement, in case of foundations in clayey soil, is usually limited to (A) 10 mm (B) 20 mm (C) 30 mm (D) 40 mm
Last Answer : Answer: Option D
Description : As per Indian Standard Specifications, the peak discharge for domestic purposes per capita per minute, is taken (A) 1.80 litres for 5 to 10 users (B) 1.20 litres for 15 users (C) 1.35 for 20 users (D) All the above
Last Answer : (D) All the above
Description : A water main 1 m in diameter contains a fluid having pressure 1 N/mm2. If the maximum permissible tensile stress in the metal is 20 N/mm2, th thickness of the metal required would be a) 2 cm b) 2.5cm c) 1 cm d) 0.5 cm
Last Answer : b) 2.5cm
Description : For 3.25 × 10-2 cumecs discharging from a well, a pump is installed to lift water against a total head of 30 m. The minimum required horse power, is (A) 10 H.P. (B) 15 H.P. (C) 18 H.P. (D) 20 H.P.
Last Answer : (D) 20 H.P.
Description : A simply supported beam 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm2 ... area of steel required, is (A) 14 cm (B) 15 cm2 (C) 16 cm2 (D) 17 cm
Description : The length of a column, having a uniform circular cross-section of 7.5 cm diameter and whose ends are hinged, is 5 m. If the value of E for the material is 2100 tonnes/cm2 , the permissible maximum crippling load will be (A) 1.288 tonnes (B) 12.88 (C) 128.8 tonnes (D) 288.0
Last Answer : (B) 12.88
Description : Minimum permissible speed on high speed roads, is decided on the basis of (A) 15 percentile cumulative frequency (B) 20 percentile cumulative frequency (C) 30 percentile cumulative frequency (D) 40 percentile cumulative frequency
Last Answer : Answer: Option A
Description : Offsets are measured with an accuracy of 1 in 40. If the point on the paper from both sources of error (due to angular and measurement errors) is not to exceed 0.05 cm on a scale of 1 cm = 20 m, the maximum length of ... should be limited to (A) 14.14 m (B) 28.28 m (C) 200 m (D) None of these
Last Answer : (B) 28.28 m
Description : Area of steel required per metre width of pavement for a length of 20 m for design wheel load 6300 kg and permissible stress in steel 1400 kg/cm2 , is (A) 70 kg/sq cm (B) 80 kg/sq cm (C) 90 kg/sq cm (D) 100 kg/sq cm
Description : The permissible amount of nitrites present in potable water, is (A) 10 ppm (B) 15 ppm (C) 45 ppm (D) Nil
Last Answer : (D) Nil
Description : Under Liberalised Remittance Scheme, PAN card need not be insisted upon for remittance made towards permissible current account transactions up to __________ A. USD 25,000 B. USD 20,000 C. USD 15,000 D. USD 10,000 E. None of the Above
Last Answer : A. USD 25,000 Explanation: PAN card need not be insisted upon for remittance made towards permissible current account transactions up to USD 25,000 per financial year.
Description : Maximum permissible air velocity in pipelines is about __________ metre/second. (A) 5 (B) 10 (C) 20 (D) 40
Last Answer : (B) 10
Description : The suitable contour interval for a map with scale 1 : 10000 is (A) 2 m (B) 5 m (C) 10 m (D) 20 m
Last Answer : (A) 2 m
Description : As per IS: 456, permissible direct compressive stress M20 grade concrete in working stress method of designer [ A ] 5.0 N/mm2 [ B ] 7.0 N/mm2 [ C ] 10.0 N/mm2 [ D ] 20.0 N/mm2
Last Answer : [ A ] 5.0 N/mm2
Description : In working stress method of design, permissible compressive bending stress for M20 grade concrete is given by [ A ] 5.0 N/mm2 [ B ] 7.0 N/mm2 [ C ] 10.0 N/mm2 [ D ] 20 N/mm2
Last Answer : [ B ] 7.0 N/mm2
Description : For the construction of cement concrete floor, the maximum permissible size of aggregate, is (A) 4 mm (B) 6 mm (C) 8 mm (D) 10 mm
Description : If the original scale of a negative is 1 : 10,000, the ground resolution, considering that we get nearly 20 lines pair per mm, will be : (a) 50 mm (b) 20 cm (c) 2 m (d) 25 cm
Last Answer : (d) 25 cm
Description : In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by (A) 10 % (B) 20 % (C) 30 % (D) 40 %
Last Answer : (D) 40 %
Description : What is domestic sewage and haze does it threaten water supplies?
Last Answer : What is the answer ?
Description : If the radius of a simple curve is 600 m, the maximum length of the chord for calculating offsets, is taken (A) 15 m (B) 20 m (C) 25 m (D) 30 m
Last Answer : (D) 30 m
Description : Permissible creep in track is m. 50 mm n. 100 mm o. 125 mm p. 150 mm.*
Last Answer : p. 150 mm.*
Description : Which of the following imparts a blue colour to glass? (1) Cobalt oxide (2) Copper oxide (3) Iron oxide (4) Nickel oxide
Last Answer : (1) Cobalt oxide Explanation: The addition of oxides, sulfides, salts, and other compounds of different metals to molten glass at the time of manufacture adds colour to glass. The introduction of ... colour; copper oxide: turquoise; chromium: dark green to black; cadmium sulfide: deep yellow, etc.
Description : Adding which substance gives blue colour to glass? (1) Manganese oxide (2) Cobalt oxide (3) Chromium oxide (4) Iron oxide
Last Answer : (2) Cobalt oxide Explanation: Cobalt is the strongest of the coloring oxides, giving a range of blues in most glasses. It is such a powerful colorant that only a few parts per million is needed to produce a light blue color such as the shade used for certain bottled waters.
Description : Which of the following imparts deep blue colour to glass? (1) Cobalt oxide (2) Cupric oxide (3) Ferrous oxide (4) Nickel oxide
Last Answer : (4) Nickel oxide Explanation: Glass colouring and colour marking may be obtained by addition of colouring ions, by precipitation of nanometer sized colloides (so-called striking glasses such as "ruby gold" or red "selenium ruby"), by coloured inclusions (as in milk glass and smoked glass).
Description : Cobalt compounds give which colour to glass?
Last Answer : Blue
Description : Which of the following imparts deep blue colour to glass ? (1) Cobalt oxide (2) Cupric oxide (3) Ferrous oxide (4) Nickel oxide
Last Answer : Nickel oxide
Description : Permissible speed of Turnout with 1 in 8.5 curved switches a. 40 kmph b. 25 kmph* c. 15 kmph d. 20 kmph
Last Answer : b. 25 kmph*
Description : If d is the diameter of the pipe, p is the total internal pressure, f is the permissible tensile stress and n is the effective of the joint, the thickness t of metal pipe, is (A) n (pd/2f) (B) (1/n) (pd/2f) (C) (1/n) (pd/3f) (D) (1/n) (pf/d
Last Answer : (B) (1/n) (pd/2f)
Description : If a concrete column 200 200 mm in cross-section is reinforced with four steel bars of 1200 mm2 total cross-sectional area. Calculate the safe load for the column if permissible stress in concrete is 5 N/mm2 ... 15 Ec (A) 264 MN (B) 274 MN (C) 284 MN (D) 294 MN
Last Answer : (C) 284 MN
Description : Design of horizontal curves on highways, is based on (A) Design speed of vehicles (B) Permissible friction on the road surface (C) Permissible centrifugal ratio (D) All the above
Description : Maximum permissible velocity 1.5 m/sec, is adopted in drains A. With beds of rocks and gravels B. Lined with stones C. Both A. and B. D. Neither A. nor B.
Last Answer : ANS: C
Description : Permissible speed of Turnout with 1 in 12 curved switches a. 40 kmph* b. 25 kmph c. 15 kmph d. 20 kmph
Last Answer : a. 40 kmph*
Description : Two columns 50 cm 50 cm and 60 cm 60 cm carry 80 tonnes and 120 tonnes of loads respectively. The centre to centre distance between columns is 5.00 metres. The permissible bearing capacity of the soil is 20 t ... the foundation slab = 7.00 m (C) Area of footing slab = 11.00 m2 (D) All the above
Last Answer : Option D
Description : While setting a plane table at a station it was found that the error in centering was 30 cm away from the ray of length 40 m drawn from the station. If the scale of the plan is 1 cm = 2 cm, the displacement of the end of ... true position will be (A) 0.02 cm (B) 0.15 cm (C) 0.2 cm (D) 0.1 cm
Last Answer : (B) 0.15 cm
Description : Turbidity of water is expressed (A) In ppm (B) In numbers in an arbitrary scale (C) By pH value (D) By colour code
Last Answer : (A) In ppm
Description : Consider the fractional knapsack instance n = 4, (p1, p2, p3, p4) = (10, 10, 12, 18), (w1, w2, w3, w4) = (2, 4, 6, 9) and M = 15. The maximum profit is given by (Assume p and w denotes profit and weight of objects respectively) (A) 40 (B) 38 (C) 32 (D) 30
Last Answer : (B) 38
Description : A hollow shaft of 1 m length is designed to transmit a power of 30 kW at 700 rpm. The maximum permissible angle of twist in the shaft is 1o. The inner diameter of the shaft is 0.7 times the outer diameter. The modulus of ... shaft is _______. (a) 43 to 45 (b) 50to 60 (c) 70 to 80 (d) 85 to 100
Last Answer : (a) 43 to 45
Description : The difference in the reservoir level and the lowest point of the water mains is 180 m. The expected pressure due to water hammer is 7.5 kg/cm2 in a pressure conduit of diameter 1 m. Assuming the efficiency of the ... , is (A) 10 mm (B) 15 mm (C) 20 mm (D) 25 mm
Last Answer : (C) 20 mm
Description : The maximum permissible speed recommended for Indian Railways for 1 in 8 and half crossing is a)16 kmph* b) 20 kmph c)24 kmph
Last Answer : a)16 kmph*
Description : The modular ratio m of a concrete whose permissible compressive stress is C, may be obtained from the equation. (A) m = 700/3C (B) m = 1400/3C (C) m = 2800/3C (D) m = 3500/3C
Description : Permissible compressive strength of M 200 concrete grade is (A) 100 kg/cm2 (B) 150 kg/cm2 (C) 200 kg/cm2 (D) 250 kg/cm2
Last Answer : (C) 200 kg/cm2