What is the PH value of pure water?

What is the PH value of pure water?
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7
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What is the pH value of pure water ?

Last Answer : PH value of pure water is 7

Which of the following has pH value 7? (1) Pure Water (2) H2SO4 (3) Sodium Carbonate (4) HCl

Description : Which of the following has pH value 7? (1) Pure Water (2) H2SO4 (3) Sodium Carbonate (4) HCl

Last Answer : (1) Pure Water Explanation: In chemistry, pH is a numeric scale used to specify the acidity or basicity of an aqueous solution. Solutions with a pH less than 7 are acidic and solutions with a pH greater than ... basic. Pure water is neutral, being neither an acid nor basic; so it has pH value of 7.

pH value of pure water is?

Description : pH value of pure water is?

Last Answer : 7.

Which of the following has pH value 7? (1) Pure Water (2) H2 SO4 (3) Sodium Carbonate (4) HCl

Description : Which of the following has pH value 7? (1) Pure Water (2) H2 SO4 (3) Sodium Carbonate (4) HCl

Last Answer :  Pure Water

What is the pH of pure water ?

Description : What is the pH of pure water ?

Last Answer : PH value of pure water 7.

The pH of pure water at `80^(@)C` will be

Description : The pH of pure water at `80^(@)C` will be

Last Answer : The pH of pure water at `80^(@)C` will be A. 7 B. `gt7` C. `lt7` D. None of these

How can you explain that even though you continue to add pure water into a substance even though the resultant pH might differ a little the acidity or alkalinity of substance still remains the same to?

Description : How can you explain that even though you continue to add pure water into a substance even though the resultant pH might differ a little the acidity or alkalinity of substance still remains the same to?

Last Answer : Need answer

What pH of pure water?

Description : What pH of pure water?

Last Answer : 7

What is the pH factor of pure water?

Description : What is the pH factor of pure water?

Last Answer : 7

What is the pH of a solution that is 1000 times more acidic than pure water?

Description : What is the pH of a solution that is 1000 times more acidic than pure water?

Last Answer : ANSWER: 4

High value of BOD (Biochemical Oxygen Demand) indicates that (a) water is less polluted (b) consumption of organic matter in the water is higher by the microbes (c) water is pure (d) water is highly polluted.

Description : High value of BOD (Biochemical Oxygen Demand)  indicates that (a) water is less polluted (b) consumption of organic matter in the water is  higher by the microbes  (c) water is pure (d) water is highly polluted.

Last Answer : (b) consumption of organic matter in the water is 

High value of BOD (Biochemical Oxygen Demand) indicates that (a) water is less polluted (b) consumption of organic matter in the water is higher by the microbes (c) water is pure (d) water is highly polluted.

Description : High value of BOD (Biochemical Oxygen Demand) indicates that (a) water is less polluted (b) consumption of organic matter in the water is higher by the microbes (c) water is pure (d) water is highly polluted.

Last Answer : (b) consumption of organic matter in the water is higher by the microbes

A sample of x litres from a container having a 60 litre mixture of milk and water containing milk and water in the ratio of 2 : 3 is replaced with pure milk so that the container will have milk and water in equal proportions. What is the value of x? a) 6 litres b) 10 litres c) 30 litres d) None of these

Description : A sample of x litres from a container having a 60 litre mixture of milk and water containing milk and water in the ratio of 2 : 3 is replaced with pure milk so that the container will have milk and water in equal ... . What is the value of x? a) 6 litres b) 10 litres c) 30 litres d) None of these

Last Answer : C Another way for solving this sum is by choice The mixture of 60 litres has in it 24 litres of milk and 36 litres of water. (2 : 3 :: milk water) When you remove x litres from it, you ... have 30 litres of milk and 30 litres of water - i.e. milk and water are in equal proportion.

If any water contains acetic acid then its pH value is less than 7. The pH value of rain water is 5-6. Does this water contain acetic acid ?

Description : If any water contains acetic acid then its pH value is less than 7. The pH value of rain water is 5-6. Does this water contain acetic acid ?

Last Answer : Absolutely. There are different types of toxic gases in our atmosphere , such as: SO3, CO2, NO2 , etc. Produces which mixes with rain water and falls to the ground.

Lime Of the pH of the water The value 3 From More No. Less Will ?

Last Answer : Lime Of water Signal Is Ca (OH) 2. Which Alkali The race too Matter. We I know , alkali The race too Of the pH of the substance Waiting for value 7 More

The PH value of a sample of multi-pledistilled water is (a) zero (b) 14 (c) very near to zero (d) very near to seven

Description : The PH value of a sample of multi-pledistilled water is (a) zero (b) 14 (c) very near to zero (d) very near to seven

Last Answer : Ans:(d)

WASTE WATER Engineering Objective Questions Pdf :: Q No: 151 The pH value of fresh sewage is usually A. Equal to 7 B. More than 7 C. Less than 7 D. Equal to zero

Description : WASTE WATER Engineering Objective Questions Pdf :: Q No: 151 The pH value of fresh sewage is usually A. Equal to 7 B. More than 7 C. Less than 7 D. Equal to zero

Last Answer : ANS: B

The conductivity of crude oil-water mixture depends on the (A) pH value (B) Water percentage (C) Temperature (D) All (A), (B) and (C

Description : The conductivity of crude oil-water mixture depends on the (A) pH value (B) Water percentage (C) Temperature (D) All (A), (B) and (C

Last Answer : (D) All (A), (B) and (C

Scale formation in boiler is controlled by (A) Preheating of feed water (B) Reduction in hardness, silica & alumina in feed water (C) Keeping the pH value of feed water just below 7 (D) Eliminating H2S in feed water

Description : Scale formation in boiler is controlled by (A) Preheating of feed water (B) Reduction in hardness, silica & alumina in feed water (C) Keeping the pH value of feed water just below 7 (D) Eliminating H2S in feed water

Last Answer : (B) Reduction in hardness, silica & alumina in feed water

The pH value of potable water should be between (A) 1 to 1.5 (B) 6.5 to 8 (C) 13 to 14 (D) 4 to 5

Description : The pH value of potable water should be between (A) 1 to 1.5 (B) 6.5 to 8 (C) 13 to 14 (D) 4 to 5

Last Answer : (B) 6.5 to 8

Use of hydrated lime in water treatment (A) Before filtration, reduces the bacterial load on filters (B) After filtration, combats the corrosiveness of water due to the presence of O2 & CO2 (C) Is to adjust the pH value (D) All (A), (B) and (C)

Description : Use of hydrated lime in water treatment (A) Before filtration, reduces the bacterial load on filters (B) After filtration, combats the corrosiveness of water due to the presence of O2 & CO2 (C) Is to adjust the pH value (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Pick out the false statement pertaining to water treatment(A) Aeration of water is effective in CO2removal(B) The zeolite water softening process reduces the hardness of water by notmore than 50%(C) Sodium sulphate or sodium carbonate do not cause hardness in water(D) Water with pH value less than 7, is acidic.

Description : Pick out the false statement pertaining to water treatment. (A) Aeration of water is effective in CO2 removal (B) The zeolite water softening process reduces the hardness of water by not more than 50% (C ... carbonate do not cause hardness in water (D) Water with pH value less than 7, is acidic

Last Answer : (B) The zeolite water softening process reduces the hardness of water by not more than 50%

High pH value of water does not produce (A) Incrustation (B) Sediment deposits (C) Tuberculation (D) None of these

Description : High pH value of water does not produce (A) Incrustation (B) Sediment deposits (C) Tuberculation (D) None of these

Last Answer : (C) Tuberculation

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 pH value of water fit for drinking, is (A) 13 (B) 11 (C) 9 (D) 7

Description : The pH value of water fit for drinking, is (A) 13 (B) 11 (C) 9 (D) 7

Last Answer : (D) 7

Water having pH value as 6, is (A) Alkaline (B) Acidic (C) Neutral (D) None of these

Description : Water having pH value as 6, is (A) Alkaline (B) Acidic (C) Neutral (D) None of these

Last Answer : (B) Acidic

If pH value of water is (A) 7 water it is said to be neutral (B) Less than 7 it is said to be acidic(C) More than 7 it is said to be alkaline (D) All the above

Description : If pH value of water is (A) 7 water it is said to be neutral (B) Less than 7 it is said to be acidic (C) More than 7 it is said to be alkaline (D) All the above

Last Answer : (D) All the above

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

For maximum alkalinity of water, pH value should be (A) Zero (B) Less than 7 (C) More than 7 (D) 14

Description : For maximum alkalinity of water, pH value should be  (A) Zero  (B) Less than 7  (C) More than 7  (D) 14

Last Answer : (D) 14

Pick up the correct statement from the following: (A) Due to boiling, the bacterias present in water can be destroyed (B) Lime may be used for softening hard water (C) Excess lime when added to water, raises the pH value of water (D) All the above

Description : Pick up the correct statement from the following:  (A) Due to boiling, the bacterias present in water can be destroyed  (B) Lime may be used for softening hard water  (C) Excess lime when added to water, raises the pH value of water  (D) All the above 

Last Answer : (D) All the above 

Pick up the correct statement from the following: (A) The pH value of neutral water is 7 (B) The maximum acidity is obtained when pH value is zero (C) The maximum alkalinity is obtained when pH value is 14 (D) All the above

Description : Pick up the correct statement from the following:  (A) The pH value of neutral water is 7  (B) The maximum acidity is obtained when pH value is zero . (C) The maximum alkalinity is obtained when pH value is 14  (D) All the above

Last Answer : (D) All the above

Pick up the correct statement from the following: (A) Lime may be used to soften the hard water (B) Excessive use of lime may kill the bacterias (C) Excessive lime when added to water, raises its pH value (D) All the above

Description : Pick up the correct statement from the following:  (A) Lime may be used to soften the hard water  (B) Excessive use of lime may kill the bacterias  (C) Excessive lime when added to water, raises its pH value  (D) All the above 

Last Answer : (D) All the above 

Recuperation test is carried out to determine (A) Turbidity of water (B) pH value of water (C) Yield of well (D) Discharge from a well

Description : Recuperation test is carried out to determine  (A) Turbidity of water  (B) pH value of water  (C) Yield of well  (D) Discharge from a well 

Last Answer : (A) Turbidity of water 

The pH value of water is kept slightly less than 7 so that hydrochloride ions may combine with ammonia ions to form (A) Mono-chloramine (NHCl) (B) Di-chloramine (NH2Cl) (C) Nitrogen tri-chloramine (NCl3) (D) All the above

Description : The pH value of water is kept slightly less than 7 so that hydrochloride ions may combine with  ammonia ions to form  (A) Mono-chloramine (NHCl)  (B) Di-chloramine (NH2Cl)  (C) Nitrogen tri-chloramine (NCl3)  (D) All the above

Last Answer : (D) All the above

Pick up the incorrect statement from the following: (A) The pH value of water indicates the logarithm of reciprocal of hydrogen ion concentration in water (B) Higher value of pH means lower hydrogen ion concentration (C) Lower value of pH means higher hydrogen ion contraction (D) Lower value of pH gives alkaline solution

Description : Pick up the incorrect statement from the following:  (A) The pH value of water indicates the logarithm of reciprocal of hydrogen ion concentration in  water  (B) Higher value of pH ... value of pH means higher hydrogen ion contraction  (D) Lower value of pH gives alkaline solution 

Last Answer : (D) Lower value of pH gives alkaline solution 

The best guide to judge the general quality of water is the measurement of its (A) pH value (B) Electrical conductivity (C) Turbidity (D) Dissolved oxygen content

Description : The best guide to judge the general quality of water is the measurement of its (A) pH value (B) Electrical conductivity (C) Turbidity (D) Dissolved oxygen content

Last Answer : (B) Electrical conductivity

As per I.S. 456 - 1978, the pH value of water shall be (A) Less than 6 (B) Equal to 6 (C) Not less than 6 (D) Equal to 7

Description : As per I.S. 456 - 1978, the pH value of water shall be (A) Less than 6 (B) Equal to 6 (C) Not less than 6 (D) Equal to 7

Last Answer : Answer: Option C

The PH value of water shall not less than. (a) 5.0 (b) 6.0 (c) 6.5 (d) 7.0

Description : The PH value of water shall not less than. (a) 5.0 (b) 6.0 (c) 6.5 (d) 7.0

Last Answer : (b) 6.0

PH value of drinking water as per wh0 standards should lie between a)5 and 5.5 b)6 and 7 c) 7 and 7.5 d)7 and 8.5*

Description : PH value of drinking water as per wh0 standards should lie between a)5 and 5.5 b)6 and 7 c) 7 and 7.5 d)7 and 8.5*

Last Answer : d)7 and 8.5*