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
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
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
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
Description : Pick up the correct statement from the following: (A) A soil having pH value more than 7 is an acidic soil (B) A soil having pH value less than 7 is an acidic soil (C) A soil ... more than 7 is an alkaline soil (D) A soil containing chemicals for the manufacture of Portland cement is preferred
Last Answer : Answer: Option B
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.
Description : pH value of sludge during alkaline regression stage, is A. More than 7 B. Less than 7 C. Less than 6 D. More than 6
Last Answer : ANS: A
Description : A rainfall may be classified as acidic if its pH value is less or equal to A. 6 B. 7 C. 5 D. 6.5
Last Answer : ANS: C
Description : For a ribbed slab (A) Clear spacing between ribs shall not be greater than 4.5 cm (B) Width of the rib shall not be less than 7.5 cm (C) Overall depth of the slab shall not exceed four times the breadth of the rib (D) All the above
Last Answer : Answer: Option D
Description : In a braking test, a vehicle travelling at 36 km ph was stopped at a braking distance of 8.0 m. The average value of the vehicle's skid resistance (friction coefficient) is (A) 0.64 (B) 6.25 (C) 0.16 (D) None of these
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
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%
Description : Pick up the correct statement from the following: A. pH value indicates acidity and alkalinity of sewage B. In acidic sewage, the pH value is less than 7 C. In alkaline sewage, the pH value is more than 7 D. All the above
Last Answer : ANS: D
Description : pH value less than 7 is?
Last Answer : Acidic in nature
Description : The pH value of water fit for drinking, is (A) 13 (B) 11 (C) 9 (D) 7
Last Answer : (D) 7
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
Description : A continuous beam shall be deemed to be a deep beam if the ratio of effective span to overall depth, is (A) 2.5 (B) 2.0 (C) Less than 2 (D) Less than 2.5
Last Answer : Answer: Option A
Description : The diameter of main bars in R.C.C. columns, shall not be less than (A) 6 mm (B) 8 mm (C) 10 mm (D) 12 mm
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 area of side face reinforcement shall not be less than [ A ] 0.10 percent of the web area on each vertical face [ B ] 0.05 percent of the web area on each vertical face [ C ] 0.15 percent of the web area on each vertical face [ D ] 0.20 percent of the web area
Last Answer : [ B ] 0.05 percent of the web area on each vertical face
Description : Water having pH value as 6, is (A) Alkaline (B) Acidic (C) Neutral (D) None of these
Last Answer : (B) Acidic
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*
Description : pH value between 6.5-7.5 makes the soil (1) Basic (2) Neutral (3) Acidic (4) None of these
Last Answer : None of these
Description : Over taking time required for a vehicle with design speed 50 km ph and overtaking acceleration 1.25 m/sec2 to overtake a vehicle moving at a speed 30 km ph, is (A) 5.0 secs (B) 6.12 secs (C) 225.48 secs (D) 30 secs
Description : The pH value of oxidised sewage is about (A) 1.8 (B) 6.2 (C) 7.3 (D) 13.4
Last Answer : (C) 7.3
Description : For a longitudinal reinforcing bar in a column, the minimum cover shall neither be less than the diameter of bar nor less than (A) 15 mm (B) 25 mm (C) 30 mm (D) 40 mm
Description : The thickness of web for unstiffened plate girder with clear distance‘d’ between the flanges shall be not less than
Last Answer : d/85
Description : According to IS:456-2000, the minimum eccentricity in no case [ A ] Shall be not less than 20mm [ B ] Shall be not greater than 30mm [ C ] Shall be 20mm-30mm [ D ] None of the above
Last Answer : [ A ] Shall be not less than 20mm
Description : The Maximum spacing of Main reinforcement „m‟ slabs shall be [ A ] Less than three times of the effective depth [ B ] Less than 300mm [ C ] Smaller of (a) and (b) [ D ] Greater of (a) and (b)
Last Answer : [ C ] Smaller of (a) and (b)
Description : Extra widening required at a horizontal curve on a single lane hill road of radius 80 m for a design speed of 50 km ph and for a vehicle with wheel base 6.0 m is (A) 0.225 m (B) 0.589 m (C) 1.250 m (D) None of these
Description : The average of pH of urine is (A) 5.6 (B) 6.0 (C) 6.4 (D) 7.0
Last Answer : Answer : B
Description : The pH optima for lactase is (A) 1.0-2.0 (B) 5.4–6.0 (C) 5.0–7.0 (D) 5.8–6.2
Description : The pH optima for sucrase is (A) 5.0–7.0 (B) 5.8–6.2 (C) 5.4–6.0 (D) 8.6
Last Answer : Answer : A
Description : The pH optima for salivary analyse is (A) 6.6–6.8 (B) 2.0–7.5 (C) 7.9 (D) 8.6
Description : The PH of albumin is (A) 3.6 (B) 4.7 (C) 5.0 (D) 6.1
Description : pH required for the growth of bacteria is a. 6.8 – 7.2 b. 5.6 – 8.2 c. 3.0 – 6.0 d. 8.0 – 14.0
Last Answer : Ans: A
Description : Which pH range is not suitable to grow the crop (a) Oats — 5.0 – 7.5 pH (b) Cotton — 6.0—7.5 pH (c) Bean ——6.0 — 8.0 pH(d) Potato —- 4.5-6.5 pH
Last Answer : (d) Potato —- 4.5-6.5 pH
Description : Pressure of Oxygen during pre-heating shall be? (i) 4.0 – 5.0 kg/ sq cm (ii) 5.0 – 6.0 kg/ sq cm (iii) 6.0 – 7.0 kg/ sq cm (iv) 7.0 – 8.0 kg/ sq cm *
Last Answer : (iv) 7.0 – 8.0 kg/ sq cm *
Description : The pH value of Puzzolanic concrete is ________________ that of ordinary concrete [ A ] lower than [ B ] much lower than [ C ] higher than [ D ] equal
Last Answer : [ B ] much lower than
Description : The pH of lemon juice is expected to be (1) equal to 7 (2) nothing can be predicted (3) less than 7 (4) more than 7
Last Answer : (3) less than 7 Explanation: The pH level of lemon juice is, 2.00 to 2.60. It varies depending on the lemon. pH expresses different levels of acidity or alkalinity within a solution.
Description : Select from the following the statement which is true for bases. (a) Bases are bitter and turn blue litmus red. (b) Bases have a pH less than 7 (c) Bases are sour and change from red litmus to blue. (d) Bases turn pink when a drop of phenolphthalein is added to them.
Last Answer : Answer: (d) Bases turn pink when a drop of phenolphthalein is added to them.
Last Answer : less than 7
Description : High pH value of water does not produce (A) Incrustation (B) Sediment deposits (C) Tuberculation (D) None of these
Last Answer : (C) Tuberculation
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 : 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) 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 : 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
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
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