Rapid gravity filter can only remove turbidity of water upto (A) 15 to 25 gm/litre (B) 25 to 30 gm/litre (C) 30 to 35 cm/litre (D) 35 to 40 gm/litre

Rapid gravity filter can only remove turbidity of water upto
(A) 15 to 25 gm/litre
(B) 25 to 30 gm/litre
(C) 30 to 35 cm/litre
(D) 35 to 40 gm/litre
by

1 Answer

Answer :

(D) 35 to 40 gm/litre
by

Related questions

Slow sand filter is used if maximum turbidity of raw water is less than (A) 10 gm/litre (B) 20 gm/litre (C) 30 gm/litre (D) 50 gm/litre

Description : Slow sand filter is used if maximum turbidity of raw water is less than (A) 10 gm/litre (B) 20 gm/litre (C) 30 gm/litre (D) 50 gm/litre

Last Answer : (D) 50 gm/litre

In slow sand filters, the turbidity of raw water can be removed only up to (A) 60 mg/litre (B) 75 mg/litre (C) 100 gm/litre (D) 150 mg/litre

Description : In slow sand filters, the turbidity of raw water can be removed only up to  (A) 60 mg/litre  (B) 75 mg/litre  (C) 100 gm/litre  (D) 150 mg/litre 

Last Answer : (A) 60 mg/litre 

The dimensions of a 35 litre forma for measuring aggregates by volume, are: (A) length 30 cm, breadth 25 cm, height 30 cm (B) length 39 cm, breadth 25 cm, height 32 cm (C) length 27 cm, breadth 27 cm, height 48 cm (D) length 220 cm, breadth 25 cm, height 40 cm

Description : The dimensions of a 35 litre forma for measuring aggregates by volume, are: (A) length 30 cm, breadth 25 cm, height 30 cm (B) length 39 cm, breadth 25 cm, height 32 cm (C) length 27 cm, breadth 27 cm, height 48 cm (D) length 220 cm, breadth 25 cm, height 40 cm

Last Answer : Answer: Option C

The yield of a rapid gravity filter as compared to that of slow sand filter, is (A) 10 times (B) 15 times (C) 20 times (D) 30 times

Description : The yield of a rapid gravity filter as compared to that of slow sand filter, is (A) 10 times (B) 15 times (C) 20 times (D) 30 times

Last Answer : (D) 30 times

In a rapid sand filter, air binding is caused due to excessive (A) Negative pressure (B) Pressure (C) Turbidity (D) Water pressure

Description : In a rapid sand filter, air binding is caused due to excessive  (A) Negative pressure  (B) Pressure  (C) Turbidity  (D) Water pressure

Last Answer : (A) Negative pressure

A spring of mean radius 40 mm contains 8 action coils of steel (N = 80000 N/mm2 ), 4 mm in diameter. The clearance between the coils being 1 mm when unloaded, the minimum compressive load to remove the clearance, is (A) 25 N (B) 30 N (C) 35 N (D) 40 N

Description : A spring of mean radius 40 mm contains 8 action coils of steel (N = 80000 N/mm2 ), 4 mm in  diameter. The clearance between the coils being 1 mm when unloaded, the minimum compressive  load to remove the clearance, is  (A) 25 N  (B) 30 N  (C) 35 N  (D) 40 N 

Last Answer : (C) 35 N 

A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one-third of the diagonal tension and ignoring the weight of the beam, the number of shear stirrups required, is (A) 30 (B) 35 (C) 40 (D) 45

Description : A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one- ... beam, the number of shear stirrups required, is (A) 30 (B) 35 (C) 40 (D) 45

Last Answer : Answer: Option C

Standard unit of turbidity of water is in one litre of distilled water, one milligram of finely divided (A) Silica (B) Mud (C) Clay (D) Organic matter

Description : Standard unit of turbidity of water is in one litre of distilled water, one milligram of finely divided  (A) Silica  (B) Mud  (C) Clay  (D) Organic matter 

Last Answer : (A) Silica 

Which of the following operational problems relate to the functioning of rapid gravity filter ? 1. Inadequate media comprising filter bed 2. Sludge bulking 3. Mud balls 4. Negative head 5. Incrustation of media (a) 1, 3, 4 and 5 only (b) 1, 2, 3 and 4 only (c) 2, 3, 4 and 5 only (d) 1, 2, 3, 4 and 5

Description : Which of the following operational problems relate to the functioning of rapid gravity filter ? 1. Inadequate media comprising filter bed 2. Sludge bulking 3. Mud balls 4. Negative head 5. Incrustation of media (a) 1, 3, 4 and 5 ... 2, 3 and 4 only (c) 2, 3, 4 and 5 only (d) 1, 2, 3, 4 and 5

Last Answer : (a) 1, 3, 4 and 5 only

A singly reinforced concrete beam of 25 cm width and 70 cm effective depth is provided with 18.75 cm2 steel. If the modular ratio (m) is 15, the depth of the neutral axis, is (A) 20 cm (B) 25 cm (C) 30 cm (D) 35 cm

Description : A singly reinforced concrete beam of 25 cm width and 70 cm effective depth is provided with 18.75 cm2 steel. If the modular ratio (m) is 15, the depth of the neutral axis, is (A) 20 cm (B) 25 cm (C) 30 cm (D) 35 cm

Last Answer : Answer: Option C

The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm2 respectively. If m = 15, the depth of its neutral axis is (A) 20 cm (B) 25 cm (C) 30 cm (D) 35 cm

Description : The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm2 respectively. If m = 15, the depth of its neutral axis is (A) 20 cm (B) 25 cm (C) 30 cm (D) 35 cm

Last Answer : Answer: Option C

Minimum clear cover (in mm) to the main steel bars in slab, beam, column and footing respectively, are (a) 10, 15, 20 and 25 (b) 15, 25, 40 and 75 (c ) 20, 25, 30 and 40 (d) 20, 35, 40 and 75

Description : Minimum clear cover (in mm) to the main steel bars in slab, beam, column and footing respectively, are (a) 10, 15, 20 and 25 (b) 15, 25, 40 and 75 (c ) 20, 25, 30 and 40 (d) 20, 35, 40 and 75

Last Answer : (b) 15, 25, 40 and 75

. Dechlorination of treated water is necessary to (A) Remove residual turbidity (B) Reduce the bacterial load on filter (C) Control taste and odour (D) Remove chlorinous taste

Description : . Dechlorination of treated water is necessary to (A) Remove residual turbidity (B) Reduce the bacterial load on filter (C) Control taste and odour (D) Remove chlorinous taste

Last Answer : (D) Remove chlorinous taste

A high velocity of wash water is required for (A) Rapid gravity filter with strainers (B) Rapid gravity filter without strainers (C) Slow sand filter with strainers (D) Slow sand filter without strainers

Description : A high velocity of wash water is required for (A) Rapid gravity filter with strainers (B) Rapid gravity filter without strainers (C) Slow sand filter with strainers (D) Slow sand filter without strainers

Last Answer : (B) Rapid gravity filter without strainers

Distribution of wash water is provided in (A) Sedimentation tank (B) Slow sand filter (C) Rapid gravity filter (D) All the above

Description : Distribution of wash water is provided in  (A) Sedimentation tank  (B) Slow sand filter  (C) Rapid gravity filter  (D) All the above 

Last Answer : (C) Rapid gravity filter

a rapid gravity filter (A) Raw water from the source is supplied (B) Disinfected raw water is supplied (C) Raw water passed through coagulation tank is supplied (D) None of these

Description : a rapid gravity filter  (A) Raw water from the source is supplied  (B) Disinfected raw water is supplied  (C) Raw water passed through coagulation tank is supplied  (D) None of these

Last Answer : (C) Raw water passed through coagulation tank is supplied 

Water derived in gm from complete oxidation of each gm of carbohydrate is about (A) 0.15 (B) 0.25 (C) 0.35 (D) 0.55

Description : Water derived in gm from complete oxidation of each gm of carbohydrate is about (A) 0.15 (B) 0.25 (C) 0.35 (D) 0.55

Last Answer : Answer : D

Minimum packing space provided between two sleepers, is between A. 20 to 25 cm B. 25 to 30 cm C. 30 to 35 cm D. 35 to 40 cm

Description : Minimum packing space provided between two sleepers, is between A. 20 to 25 cm B. 25 to 30 cm C. 30 to 35 cm D. 35 to 40 cm

Last Answer : C [30 to 35 cm]

In potato cultivation what should be the ideal distance between plantation of two tubers? a. 30 – 35 cm b. 05 – 10 cm c. 35 – 40 cm d. 15 – 20 cm

Description : In potato cultivation what should be the ideal distance between plantation of two tubers? a. 30 – 35 cm b. 05 – 10 cm c. 35 – 40 cm d. 15 – 20 cm

Last Answer : d. 15 – 20 cm

Which of the following ranges identifies the amount of pressure within the endotracheal tube cuff that is believed to prevent both injury and aspiration? a) 20-25 mm Hg water pressure. Usually the pressure is maintained at less than 25 cm water pressure to prevent injury and at more than 20 cm water pressure to prevent aspiration. b) 10-15 mm Hg water pressure. A measure of 10–15 mm Hg water pressure would indicate that the cuff is underinflated. c) 30-35 mm Hg water pressure. A measure of 30–35 mm Hg water pressure would indicate that the cuff is overinflated. d) 0-5 mm Hg water pressure A measure of 0-5 mm Hg water pressure would indicate that the cuff is underinflated.

Description : Which of the following ranges identifies the amount of pressure within the endotracheal tube cuff that is believed to prevent both injury and aspiration? a) 20-25 mm Hg water pressure. Usually the ... pressure A measure of 0-5 mm Hg water pressure would indicate that the cuff is underinflated.

Last Answer : a) 20-25 mm Hg water pressure. Usually the pressure is maintained at less than 25 cm water pressure to prevent injury and at more than 20 cm water pressure to prevent aspiration.

Rapid gravity filters can remove bacterial impurities up to a maximum of (A) 50 % (B) 60 % (C) 70 % (D) 80 %

Description : Rapid gravity filters can remove bacterial impurities up to a maximum of  (A) 50 %  (B) 60 %  (C) 70 %  (D) 80 %

Last Answer : (D) 80 %

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50'. What number is missing? -Riddles

Description : 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50'. What number is missing? -Riddles

Last Answer : 22

The normal range of filtration factor in an adult is (A) 0.10–0.15 (B) 0.16–0.21 (C) 0.25–0.30 (D) 0.35–0.40

Description : The normal range of filtration factor in an adult is (A) 0.10–0.15 (B) 0.16–0.21 (C) 0.25–0.30 (D) 0.35–0.40

Last Answer : Answer : B

What is the size of Basin (sqm) in Check Basin Method of Irrigation? [a] 05- 20 sqm [b] 15- 30 sqm [c] 20- 35 sqm [d] 25- 40 sqm [e] None of the above

Description : What is the size of Basin (sqm) in Check Basin Method of Irrigation? [a] 05- 20 sqm [b] 15- 30 sqm [c] 20- 35 sqm [d] 25- 40 sqm [e] None of the above

Last Answer : [c] 20- 35 sqm

How many HP for tractor is suitable suitable for 20 hectares farm? A. 10-15 C. 20-25. B. 30-35 D. 40-45

Description : How many HP for tractor is suitable suitable for 20 hectares farm? A. 10-15 C. 20-25. B. 30-35 D. 40-45

Last Answer : 20-25

P and Q can do a piece of job in 24 days; Q and R can do it in 30 days while R and P can finish it in 40 days. If P, Q, Rworks together, in how many days will they finish the job? In how many days will each one of them finish it, working alone? A) 15,25,35,45 B) 20,30,40,120 C) 20,30,40,50 D) 20,25,30,60

Description : P and Q can do a piece of job in 24 days; Q and R can do it in 30 days while R and P can finish it in 40 days. If P, Q, Rworks together, in how many days will they finish the job? In how many days will each ... finish it, working alone? A) 15,25,35,45 B) 20,30,40,120 C) 20,30,40,50 D) 20,25,30,60 

Last Answer : B Time taken by (P + Q) to finish the job = 24days. (P + Q)'s 1 day's job = 1/24 Time taken by (Q +R) to finish the job = 30days. (Q + R)'s 1 day's job = 1/30 Time taken by (R + P) to finish the ... - {(P + Q)'s 1 day's job } = (1/20 -1/24)=1/120 Hence, R alone can finish the job in 120 days.

The percentage of chlorine in fresh bleaching powder is roughly (A) 50 to 60 (B) 30 to 35 (C) 40 to 50 (D) 20 to 25

Description : The percentage of chlorine in fresh bleaching powder is roughly (A) 50 to 60 (B) 30 to 35 (C) 40 to 50 (D) 20 to 25

Last Answer : (B) 30 to 35

The maximum ratio of span to depth of a slab simply supported and spanning in two directions, is (A) 25 (B) 30 (C) 35 (D) 40

Description : The maximum ratio of span to depth of a slab simply supported and spanning in two directions, is (A) 25 (B) 30 (C) 35 (D) 40

Last Answer : Answer: Option C

The peak of a 4 hour flood hydrograph is 240 m3 /sec. If the rainfall excess is 80 mm and base flow which is constant is 40 m3 /sec, peak of 4hours unit hydrograph will be (A) 20 m3 /sec (B) 25 m3 /sec (C) 30 m3 /sec (D) 35 m3 /sec

Description : The peak of a 4 hour flood hydrograph is 240 m3 /sec. If the rainfall excess is 80 mm and base flow which is constant is 40 m3 /sec, peak of 4hours unit hydrograph will be (A) 20 m3 /sec (B) 25 m3 /sec (C) 30 m3 /sec (D) 35 m3 /sec

Last Answer : Answer: Option B

The maximum ratio of span to depth of a slab simple supported and spanning in two directions, is (a) 25 (b) 30 (c) 35 (d) 40

Description : The maximum ratio of span to depth of a slab simple supported and spanning in two directions, is (a) 25 (b) 30 (c) 35 (d) 40

Last Answer : (c) 35

The unit of filter medium resistance is(A) cm-1(B) gm/cm-1(C) cm/gm-1(D) gm-1

Description : The unit of filter medium resistance is (A) cm-1 (B) gm/cm-1 (C) cm/gm-1 (D) gm-1

Last Answer : (A) cm-1

From the point of tangency before an intersection, the route markers are fixed at a distance of (A) 15 m to 30 m (B) 20 m to 35 m (C) 40 m to 50 m (D) 100 m to 150

Description : From the point of tangency before an intersection, the route markers are fixed at a distance of (A) 15 m to 30 m (B) 20 m to 35 m (C) 40 m to 50 m (D) 100 m to 150

Last Answer : Answer: Option D

The bearing capacity of granite is generally (A) 5 to 10 kg/cm2 (B) 15 to 20 kg/cm2 (C) 30 to 35 kg/cm2 (D) 40 to 45 kg/cm2

Description : The bearing capacity of granite is generally (A) 5 to 10 kg/cm2 (B) 15 to 20 kg/cm2 (C) 30 to 35 kg/cm2 (D) 40 to 45 kg/cm2

Last Answer : Answer: Option C

Rapid gravity filters (A) Were developed by G.W. Fuller (B) Make use of coarser sand with effective size as 0.5 mm (C) Yield as high as 30 times the yield of slow sand filters (D) All the above

Description : Rapid gravity filters  (A) Were developed by G.W. Fuller  (B) Make use of coarser sand with effective size as 0.5 mm  (C) Yield as high as 30 times the yield of slow sand filters  (D) All the above 

Last Answer : (D) All the above 

A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is A. 0.30 m/sec B. 0.35 m/sec C. 0.40 m/sec D. 0.45 m/sec

Description : A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is A. 0.30 m/sec B. 0.35 m/sec C. 0.40 m/sec D. 0.45 m/sec

Last Answer : ANS: D

Disinfection of drinking water, is done to remove (A) Odour (B) Bacterias (C) Turbidity (D) Colour

Description : Disinfection of drinking water, is done to remove (A) Odour (B) Bacterias (C) Turbidity (D) Colour

Last Answer : (B) Bacterias

Filtration of water is done to remove (A) Colour (B) Odour (C) Turbidity (D) Pathogenic bacteria

Description : Filtration of water is done to remove (A) Colour (B) Odour (C) Turbidity (D) Pathogenic bacteria

Last Answer : (C) Turbidity

Disinfection of drinking water is done to remove (A) Turbidity (B) Odour (C) Colour (D) Bacterias

Description : Disinfection of drinking water is done to remove (A) Turbidity (B) Odour (C) Colour (D) Bacterias

Last Answer : (D) Bacterias

Aeration of water is done to remove (A) Odour (B) Colour (C) Bacterias (D) Turbidity

Description : Aeration of water is done to remove  (A) Odour  (B) Colour  (C) Bacterias  (D) Turbidity 

Last Answer : (A) Odour 

The spacing between the discs in the gang bolt ranges cm for lighy duty and cm heavy -duty harrows i. 15-25 and 25-30 c) 40-45 and 45-50 ii. 20-30 and 30-40. d) 15-25 and 32-36

Description : The spacing between the discs in the gang bolt ranges cm for lighy duty and cm heavy -duty harrows i. 15-25 and 25-30 c) 40-45 and 45-50 ii. 20-30 and 30-40. d) 15-25 and 32-36

Last Answer : 15-25 and 25-30

Grade A eggs are of — gm. Weight ? a. 35 to 40 b. 40 to 45 c. 45 to 50 d. 50 to 53

Description : Grade A eggs are of — gm. Weight ? a. 35 to 40 b. 40 to 45 c. 45 to 50 d. 50 to 53

Last Answer : d. 50 to 53

The skirting/dado in a bath roof should be upto (A) Ceiling (B) 15 cm above floor level (C) 200 cm (D) Level of the tap

Description : The skirting/dado in a bath roof should be upto (A) Ceiling (B) 15 cm above floor level (C) 200 cm (D) Level of the tap

Last Answer : Answer: Option C

Percentage of pozzolanic material containing clay upto 80% used for the manufacture of pozzolana cement, is (A) 30 % (B) 40 % (C) 50 % (D) 60 %

Description : Percentage of pozzolanic material containing clay upto 80% used for the manufacture of pozzolana cement, is (A) 30 % (B) 40 % (C) 50 % (D) 60 %

Last Answer : (A) 30 %

Pick out the wrong statement. (A) Aromatics have higher specific gravity than paraffins (B) Gross calorific value (GCV) of petrofuels is equal to (12400 - 2100 ρ 2 ) where, ρ is the specific gravity of the fuel at 15.5°C (C) Heavier petrofuels have higher GCV on weight basis (i.e., Kcal/kg) but lower GCV on volume basis (i.e., Kcal/litre) (D) Higher specific gravity of petrofuels means higher C/H ratio

Description : Pick out the wrong statement. (A) Aromatics have higher specific gravity than paraffins (B) Gross calorific value (GCV) of petrofuels is equal to (12400 - 2100 ρ 2 ) where, ρ is the specific gravity ... volume basis (i.e., Kcal/litre) (D) Higher specific gravity of petrofuels means higher C/H ratio

Last Answer : (C) Heavier petrofuels have higher GCV on weight basis (i.e., Kcal/kg) but lower GCV on volume basis (i.e., Kcal/litre)

Molarity is defined as the number of gm moles of solute per __________ of solvent. (A) Litre (B) kg (C) gm (D) c.c

Description : Molarity is defined as the number of gm moles of solute per __________ of solvent. (A) Litre (B) kg (C) gm (D) c.c

Last Answer : (A) Litre

Molality is defined as the number of gm moles of solute per __________ of solvent. (A) Litre (B) gm (C) Kg (D) m

Description : Molality is defined as the number of gm moles of solute per __________ of solvent. (A) Litre (B) gm (C) Kg (D) m

Last Answer : (C) Kg

Rate constant for a first order reaction does not depend upon reaction time, extent of reaction and the initial concentration of reactants; but it is afunction of reaction temperature. In a chemical reaction, the time requiredto reduce the concentration of reactant from 100 gm moles/litre to 50 gmmoles/litre is same as that required to reduce it from 2 gm moles/litre to 1gm mole/litre in the same volume. Then the order of this reaction is:(A) 0(B) 1(C) 2(D) 3

Description : Rate constant for a first order reaction does not depend upon reaction time, extent of reaction and the initial concentration of reactants; but it is afunction of reaction temperature. In a chemical reaction, the time required to ... Then the order of this reaction is: (A) 0 (B) 1 (C) 2 (D) 3

Last Answer : (B) 1

For the reaction as shown in the bellow figure, the rate of formation of Z is 0.2 gm mole/litre.hr. What is the rate of disappearance of X in gm mole/litre.hr? (A) 0.4 (B) 0.1 (C) 0.2 (D) None of these

Description : For the reaction as shown in the bellow figure, the rate of formation of Z is 0.2 gm mole/litre.hr. What is the rate of disappearance of X in gm mole/litre.hr? (A) 0.4 (B) 0.1 (C) 0.2 (D) None of these

Last Answer : (A) 0.4

The value of 'A' of Indian type W.C. shown in the given figure is: (A) 25 cm (B) 30 cm (C) 40 cm (D) 45 cm

Description : The value of 'A' of Indian type W.C. shown in the given figure is: (A) 25 cm (B) 30 cm (C) 40 cm (D) 45 cm

Last Answer : (B) 30 cm

Consider the following statements. The role of the gravel bed in a rapid sand filter is : 1. To filter out large suspended matter 2. To support the sand bed above it 3. To prevent the escape of sand particles 4. To uniformly distribute the backwash water 5. To prevent algae growth Which of the following statements are correct ? a) 1, 2, 3, 4 and 5 b) 2, 3 and 4 only c) 3, 4 and 5 only d) 1, 2 and 3 only

Description : Consider the following statements. The role of the gravel bed in a rapid sand filter is : 1. To filter out large suspended matter 2. To support the sand bed above it 3. To prevent the escape of sand particles 4. To uniformly ... and 5 b) 2, 3 and 4 only c) 3, 4 and 5 only d) 1, 2 and 3 only

Last Answer : b) 2, 3 and 4 only