The maximum permissible colour for domestic supplies based on cobalt scale, is (A) 5 ppm (B) 10 ppm (C) 15 ppm (D) 20 ppm

The maximum permissible colour for domestic supplies based on cobalt scale, is
(A) 5 ppm
(B) 10 ppm
(C) 15 ppm
(D) 20 ppm
by

1 Answer

Answer :

(D) 20 ppm
by

Related questions

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.

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.

The nitrate concentration in domestic water supplies, is generally limited to (A) 10 ppm (B) 15 ppm (C) 30 ppm (D) 45 ppm

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

The permissible color for domestic water supply is __________ ppm.(A) 1 (B) 20 (C) 100 (D) 1000

Description : The permissible color for domestic water supply is __________ ppm. (A) 1 (B) 20 (C) 100 (D) 1000

Last Answer : (B) 20

The permissible amount of nitrites present in potable water, is (A) 10 ppm (B) 15 ppm (C) 45 ppm (D) Nil

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

Turbidity of water is expressed (A) In ppm (B) In numbers in an arbitrary scale (C) By pH value (D) By colour code

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

Maximum permissible turbidity in potable water is __________ ppm. (A) 1 (B) 10 (C) 250 (D) 1000

Description : Maximum permissible turbidity in potable water is __________ ppm. (A) 1 (B) 10 (C) 250 (D) 1000

Last Answer : (B) 10

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

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

From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. (A) 5 (B) 50 (C) 500 (D) 5000

Description : From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. (A) 5 (B) 50 (C) 500 (D) 5000

Last Answer : (A) 5

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

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

A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from __________ ppm. (A) 1000 to 2000 (B) 3000 to 6000 (C) 6000 to 9000 (D) 10000 to 100000

Description : A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from __________ ppm. (A) 1000 to 2000 (B) 3000 to 6000 (C) 6000 to 9000 (D) 10000 to 100000

Last Answer : (D) 10000 to 100000

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

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

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.

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.

The maximum permissible hardness for public supplies is (A) 95 mg/litre (B) 105 mg/litre (C) 115 mg/litre(D) 125 mg/litre

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

The chloride content of treated water for public supplies should not exceed (A) 100 ppm (B) 150 ppm (C) 200 ppm (D) 250 ppm

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

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

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

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

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

The permissible and normal limit of EC, RSC, SAR (meq 1 –1 ) and Boron content (ppm)

Description : The permissible and normal limit of EC, RSC, SAR (meq 1 –1 ) and Boron content (ppm)

Last Answer : Ans.2–4, < 2.5, < 10 and 10,000 ha

Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm). (A) Highly (B) Moderately (C) Extremely (D) Very extremely

Description : Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm). (A) Highly (B) Moderately (C) Extremely (D) Very extremely

Last Answer : (B) Moderately

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

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

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

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

Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the (A) Industrial chimney exhaust (B) Automobiles exhaust (C) Photochemical reaction in polluted atmosphere (D) Burning of domestic fuel

Description : Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the (A) Industrial chimney exhaust (B) Automobiles exhaust (C) Photochemical reaction in polluted atmosphere (D) Burning of domestic fuel

Last Answer : (B) Automobiles exhaust

B.O.D. of treated water should be (A) 10 ppm (B) 25 ppm (C) 20 ppm (D) Nil

Description : B.O.D. of treated water should be (A) 10 ppm (B) 25 ppm (C) 20 ppm (D) Nil

Last Answer : (D) Nil

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 m

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

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

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

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

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.

Maximum permissible air velocity in pipelines is about __________ metre/second. (A) 5 (B) 10 (C) 20 (D) 40

Description : Maximum permissible air velocity in pipelines is about __________ metre/second. (A) 5 (B) 10 (C) 20 (D) 40

Last Answer : (B) 10

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

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

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

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

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 : 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

Last Answer : Answer: Option D

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 %

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 %

A rural water supply serves a population of 10, 000 at the rate of 50 litres per capita per day . For the chlorine dose of 2 PPM the required amount of bleaching powder with 20% available chlorine will be a. 0.5 kg b. 5 kg * c. 10 kg d. 15 kg

Description : A rural water supply serves a population of 10, 000 at the rate of 50 litres per capita per day . For the chlorine dose of 2 PPM the required amount of bleaching powder with 20% available chlorine will be a. 0.5 kg b. 5 kg * c. 10 kg d. 15 kg

Last Answer : b. 5 kg

Which of the following imparts a blue colour to glass? (1) Cobalt oxide (2) Copper oxide (3) Iron oxide (4) Nickel oxide

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.

Adding which substance gives blue colour to glass? (1) Manganese oxide (2) Cobalt oxide (3) Chromium oxide (4) Iron oxide

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.

Which of the following imparts deep blue colour to glass? (1) Cobalt oxide (2) Cupric oxide (3) Ferrous oxide (4) Nickel oxide

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).

Cobalt compounds give which colour to glass?

Description : Cobalt compounds give which colour to glass?

Last Answer : Blue

Which of the following imparts deep blue colour to glass ? (1) Cobalt oxide (2) Cupric oxide (3) Ferrous oxide (4) Nickel oxide

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

Permissible speed of Turnout with 1 in 8.5 curved switches a. 40 kmph b. 25 kmph* c. 15 kmph d. 20 kmph

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*

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 and Es is 15 Ec (A) 264 MN (B) 274 MN (C) 284 MN (D) 294 MN

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 

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 : 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

Last Answer : Answer: Option D

What is domestic sewage and haze does it threaten water supplies?

Description : What is domestic sewage and haze does it threaten water supplies?

Last Answer : What is the answer ?

Permissible speed of Turnout with 1 in 12 curved switches a. 40 kmph* b. 25 kmph c. 15 kmph d. 20 kmph

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*

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

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

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 , the area of steel required, is (A) 14 cm(B) 15 cm2(C) 16 cm2(D) 17 cm

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

Last Answer : Answer: Option C

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

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

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

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*

To ascertain the maximum permissible eccentricity of loads on circular columns, the rule generally followed, is (A) Middle half rule of columns (B) Middle third rule of columns (C) Middle fourth rule of columns (D) None of these

Description : To ascertain the maximum permissible eccentricity of loads on circular columns, the rule generally followed, is (A) Middle half rule of columns (B) Middle third rule of columns (C) Middle fourth rule of columns (D) None of these

Last Answer : (C) Middle fourth rule of columns

The cross sections of the beams of equal length are a circle and a square whose permissible bending stress is same under same maximum bending. The ratio of their flexural weights is, (A) 1.118 (B) 1.338 (C) 1.228 (D) 1.108

Description : The cross sections of the beams of equal length are a circle and a square whose permissible bending stress is same under same maximum bending. The ratio of their flexural weights is, (A) 1.118 (B) 1.338 (C) 1.228 (D) 1.108

Last Answer : (A) 1.118

The maximum load to which a fillet joint of length can be subjected to, is (A) 0.7 × S × fillet size × L (B) 2 × S × fillet size × L (C) Permissible shear stress × fillet size × L (D) (S × fillet size × L)/3

Description : The maximum load to which a fillet joint of length can be subjected to, is  (A) 0.7 × S × fillet size × L (B) 2 × S × fillet size × L (C) Permissible shear stress × fillet size × L (D) (S × fillet size × L)/3 

Last Answer : (A) 0.7 × S × fillet size × L

The maximum twisting moment a shaft can resist, is the product of the permissible shear stress and (A) Moment of inertia (B) Polar moment of inertia (C) Polar modulus (D) Modulus of rigidly

Description : The maximum twisting moment a shaft can resist, is the product of the permissible shear stress and (A) Moment of inertia (B) Polar moment of inertia (C) Polar modulus (D) Modulus of rigidly

Last Answer : (C) Polar modulus

The maximum permissible eccentricity for no tension at the base of a gravity dam is (A) B/2 (B) B/3 (C) B/4 (D) B/6

Description : The maximum permissible eccentricity for no tension at the base of a gravity dam is (A) B/2 (B) B/3 (C) B/4 (D) B/6

Last Answer : Answer: Option D