According to IS : 2720 - 1965, the composition of a dispersing solution used in pipette analysis for determining the size of particles, is (A) sodium-hexametaphosphate 33 g, sodium carbonate 7 g and distilled water one litre (B) sodium-hexametaphosphate 7 g, sodium carbonate 33 g and distilled water one litre (C) sodium-hexametaphosphate 23 g, sodium carbonate 17 g and distilled water one litre (D) None of these

According to IS : 2720 - 1965, the composition of a dispersing solution used in pipette analysis for
determining the size of particles, is
(A) sodium-hexametaphosphate 33 g, sodium carbonate 7 g and distilled water one litre
(B) sodium-hexametaphosphate 7 g, sodium carbonate 33 g and distilled water one litre
(C) sodium-hexametaphosphate 23 g, sodium carbonate 17 g and distilled water one litre
(D) None of these
by

1 Answer

Answer :

Answer: Option A
by

Related questions

Pick up the correct statement from the following: (A) In hydrometer method, weight Wd per ml of suspension is found directly (B) In pipette analysis, weight Wd per ml of suspension is found indirectly (C) In pipette analysis, weight Wd per ml of suspension is found directly (D) None of these

Description : Pick up the correct statement from the following: (A) In hydrometer method, weight Wd per ml of suspension is found directly (B) In pipette analysis, weight Wd per ml of suspension is found indirectly (C) In pipette analysis, weight Wd per ml of suspension is found directly (D) None of these

Last Answer : (C) In pipette analysis, weight Wd per ml of suspension is found directly

The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in (A) The principle of test (B) The method of taking observations (C) The method of preparation of soil suspension (D) All of the above

Description : The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in (A) The principle of test (B) The method of taking observations (C) The method of preparation of soil suspension (D) All of the above

Last Answer : (B) The method of taking observations

In hydrometer analysis for a soil mass (A) Both meniscus correction and dispersing agent correction are additive (B) Both meniscus correction and dispersing agent correction are subtractive (C) Meniscus correction is additive and dispersing agent correction is subtractive (D) Meniscus correction is subtractive and dispersing agent correction is additive

Description : In hydrometer analysis for a soil mass (A) Both meniscus correction and dispersing agent correction are additive (B) Both meniscus correction and dispersing agent correction are subtractive ... is subtractive (D) Meniscus correction is subtractive and dispersing agent correction is additive

Last Answer : (C) Meniscus correction is additive and dispersing agent correction is subtractive

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 

Calgon used in water treatment is chemically (A) Sodium phosphate (B) Sodium hexametaphosphate (C) Calcium phosphate (D) Tricresyl phosphate

Description : Calgon used in water treatment is chemically (A) Sodium phosphate (B) Sodium hexametaphosphate (C) Calcium phosphate (D) Tricresyl phosphate

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Permanent hardness of water can be removed by (A) Addition of soda ash to it (B) Treating it with zeolites (C) Passing it through sodium hexametaphosphate (D) All (A), (B), and (C)

Description : Permanent hardness of water can be removed by (A) Addition of soda ash to it (B) Treating it with zeolites (C) Passing it through sodium hexametaphosphate (D) All (A), (B), and (C)

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

Cumulative analysis for determining surface is more precise than differential analysis, because of the (A) Assumption that all particles in a single fraction are equal in size (B) Fact that screening is more effective (C) Assumption that all particles in a single fraction are equal in size, is not needed (D) None of these

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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

Which of the following is not accomplished by agitation of liquids in agitators? (A) Dispersing gas in liquid (B) Blending of immiscible liquids (C) Dispersing immiscible liquid in form of emulsion (D) Suspending solid particles

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Agglomeration of individual particles into clusters (flocs) is called flocculation. To prevent flocculation, the most commonly used dispersing agents are (A) Carbonates (B) Sulphates (C) Silicates & phosphates (D) Bi-carbonates

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How to prepare 250 g of 3% sodium carbonate solution? Thanks :)

Description : Could someone write me how it is calculated? Please write and calculate :)

Last Answer : I'll try, I just don't know if I'm allowed to contribute. In your case, these are weight percentages. Weight percentages indicate the number of grams of solute in 100 grams of solution. Thus: 3 g of ... water gives 250 g 3% sodium carbonate solution I don't know why I don't want to print in bold.

If the effective working time is 7 hours and per batch time of concrete is 3 minutes, the output of a concrete mixer of 150 litre capacity, is (A) 15,900 litres (B) 16,900 litres (C) 17,900 litres (D) 18,900 litres

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Which one of the following is the most possible solution for planning improvement of a metropolitan city in India? [IAS 2003] (a) Constructing high rise building and sky scrapers (b) Dispersing the factories & industries to the neighbouring but independent location. (c) Building up suburbs and satellite towns around the main city (d) Preventing immigration of people into the metropolitan city

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According to Indian Standards Institute, the actual size of modular bricks is (A) 23 cm × 11.5 cm × 7.5 cm (B) 25 cm × 13 cm × 7.5 cm (C) 19 cm × 9 cm × 9 cm (D) 20 cm × 10 cm × 10 cm

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Last Answer : (C) 19 cm × 9 cm × 9 cm

The total number of protons in 10 g of calcium carbonate is `(N_(0) = 6.023 xx 10^(23))` :-

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Hydrometer readings are corrected for: (A) Temperature correction (B) Meniscus correction (C) Dispersing agent correction (D) Temperature, meniscus and dispersing agent corrections

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On nephelometry turbidity unit (NTU) is equal to the turbidity produced by (a) 1 mg SiO2 dissolved in 1 l of distilled water with the test being run according to absorption principle (b) 1 mg SiO2 dissolved in 1 l of distilled water with the test being run according t scattering principle (c) 1 mg Formazin dissolved in 1 l of distilled water with the test being run according to absorption principle (d) 1 mg Formazin dissolved in 1 l o f distilled water with the test being run according to scattering principle.

Description : On nephelometry turbidity unit (NTU) is equal to the turbidity produced by (a) 1 mg SiO2 dissolved in 1 l of distilled water with the test being run according to absorption principle (b) 1 ... Formazin dissolved in 1 l o f distilled water with the test being run according to scattering principle.

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For determine the specific gravity of soil solids, using a pycnometer of 500 cc., the following data is available : Weight of dry empty pycnometer = 125 g Weight of dried soil and pycnometer = 500 g Weight of dried soil and distilled = 850 g water filled in pycnometer up to top The specific gravity of soil solids, is (A) 2.0 (B) 2.25 (C) 2.50 (D) 2.75

Description : For determine the specific gravity of soil solids, using a pycnometer of 500 cc., the following data is available : Weight of dry empty pycnometer = 125 g Weight of dried soil and pycnometer = 500 g Weight of dried soil and distilled ... of soil solids, is (A) 2.0 (B) 2.25 (C) 2.50 (D) 2.75

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One litre of a solution contains 18.9 g of `HNO_(3)` and one litre of another solution contains 3.2 g of NaOH. In what volume ratio must these solutio

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A molar solution is one that contains one mole of a solute in [IIT 1986] (A) 1000 g of the solvent (B) One litre of the solvent (C) One litre of the solution (D) 22.4 litres of the solution

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If G is the specific gravity of particles of diameter d, the velocity of settlement V in still water at T°C, according to Stoke's law, is (A) V = 418 (G - 1) d² [(3T + 70)/100] (B) V = 418 (G - 1) d [(3T - 70)/100] (C) V = 418 (G - 1) d² [(2T + 70)/100] (D) V = 418 (G - 1) d 4 [(3T + 70)/100]

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In flue gas analysis by Orsat's apparatus, carbon dioxide is absorbed by (A) Potassium hydroxide (B) Dilute potassium carbonate (C) Cuprous chloride (D) Alkaline pyrogallol solution

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Pick out the wrong statement. (A) Eosin requirement in tallow soap is about 40-50% which fastens the lather formation, softens the hard soaps and increases its cleansing action (B) Soap powder is prepared by mixing soap with hydrated sodium carbonate (C) Detergents differ from soaps in their action in hard water (D) Tarnish inhibitor (e.g., Benzotriazole) is added in soap to facilitate the removal of stains due to tea, blood etc

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Last Answer : (D) Tarnish inhibitor (e.g., Benzotriazole) is added in soap to facilitate the removal of stains due to tea, blood etc

0.257g of organic substance was heated with conc. sulphuric acid and then distilled with excess of strong alkali .the ammonia gas evolved was absorbed in 50ml of .1M HCl which required 23.2ml of c for neutralization at the end of the process. Determine the % of nitrogen in the compound ?

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A red liquid (A) when treated with sodium carbonate gives a mixture of two sails (B) and (C) in the solution In which (C) contains oxygen. The mixture

Description : A red liquid (A) when treated with sodium carbonate gives a mixture of two sails (B) and (C) in the solution In which (C) contains oxygen. The mixture

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A red liquid (A) when treated with sodium carbonate gives a mixture of two sails (B) and (C) in the solution in which (C) contains oxygen. The mixture

Description : A red liquid (A) when treated with sodium carbonate gives a mixture of two sails (B) and (C) in the solution in which (C) contains oxygen. The mixture

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A red liquid (A) when treated with sodium carbonate gives a mixture of two sails (B) and (C) in the solution In which (C) contains oxygen. The mixture

Description : A red liquid (A) when treated with sodium carbonate gives a mixture of two sails (B) and (C) in the solution In which (C) contains oxygen. The mixture

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25 ml of the given HCl solution requires 30 mL of 0.1M sodium carbonate solution. What is the volume of this HCl solution required to titrate 30 mL of

Description : 25 ml of the given HCl solution requires 30 mL of 0.1M sodium carbonate solution. What is the volume of this HCl solution required to titrate 30 mL of

Last Answer : 25 ml of the given HCl solution requires 30 mL of 0.1M sodium carbonate solution. What is the volume of this HCl ... 5 mL B. 75 mL C. 50 mL D. 25 mL

A compound is prepared from the mineral colemanite by boiling it with a solution of sodium carbonate.

Description : A compound is prepared from the mineral colemanite by boiling it with a solution of sodium carbonate.

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What is the molarity of 5.60 mol of sodium carbonate in 1500 ml of solution?

Description : What is the molarity of 5.60 mol of sodium carbonate in 1500 ml of solution?

Last Answer : Molarity = moles of solute/Liters of solution ( 1500 mL = 1.5 Liters ) Molarity = 0.800 moles NaOH/1.5 Liters = 0.533 M sodium hydroxide ...

A metal carbonate X on reacting with an acid gives a gas which when passed through a solution Y gives carbonate back..Identify X and Y. (a) X is sodium carbonate and Y is Sodium hydroxide (b) X is Calcium carbonate and Y is calcium hydroxide (c ) X is Potassium carbonate and Y is Potassium hydroxide. (d) None of above

Description : A metal carbonate X on reacting with an acid gives a gas which when passed through a solution Y gives carbonate back..Identify X and Y. (a) X is sodium carbonate and Y is Sodium hydroxide (b) X ... Y is calcium hydroxide (c ) X is Potassium carbonate and Y is Potassium hydroxide. (d) None of above

Last Answer : (b) X is Calcium carbonate and Y is calcium hydroxide

Brine is an a) aqueous solution of sodium hydroxide b) aqueous solution of sodium carbonate c) aqueous solution of sodium chloride d) aqueous solution of sodium bicarbonate

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Which among the following stage is suitable indicator when solution of sodium carbonate is mixed with sulphuric acid ? (1) Methylene blue (2) Methyl red (3) Phenolphthaline (4) Methyl orange

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Last Answer : Methyl orange

The bulk density of aggregates, is generally expressed as (A) tonnes/cubic metre (B) kg/cubic metre (C) kg/litre (D) g/cm3

Description : The bulk density of aggregates, is generally expressed as (A) tonnes/cubic metre (B) kg/cubic metre (C) kg/litre (D) g/cm3

Last Answer : (C) kg/litre

Normal haemoglobin level for male is _______ g/L a. 13.8 to 17 b. 12.8 to 15 c. 20 to 23 d. 16 to 19

Description : Normal haemoglobin level for male is _______ g/L a. 13.8 to 17 b. 12.8 to 15 c. 20 to 23 d. 16 to 19

Last Answer : a. 13.8 to 17

Choose the set of pressure intensities that are equivalent. (A) 4.33 psi, 10 ft. of water, 8.83 inches of Hg (B) 4.33 psi, 10 ft. of water, 20.7 inches of Hg (C) 10 psi, 19.7 ft. of water, 23.3 inches of Hg (D) 10 psi, 19.7 ft. of water, 5.3 inches of Hg

Description : Choose the set of pressure intensities that are equivalent. (A) 4.33 psi, 10 ft. of water, 8.83 inches of Hg (B) 4.33 psi, 10 ft. of water, 20.7 inches of Hg (C) 10 psi, 19.7 ft. of water, 23.3 inches of Hg (D) 10 psi, 19.7 ft. of water, 5.3 inches of Hg

Last Answer : (A) 4.33 psi, 10 ft. of water, 8.83 inches of Hg

1.250 g of metal carbonate `(MCO_(3))` was treated with 500 mL of 0.1 M HCl solution. The unreacted HCl required 50.0 mL of 0.500 M NaOH solution for

Description : 1.250 g of metal carbonate `(MCO_(3))` was treated with 500 mL of 0.1 M HCl solution. The unreacted HCl required 50.0 mL of 0.500 M NaOH solution for

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According to IS classification, the range of silt size particles is (A) 4.75 mm to 2.00 mm (B) 2.00 mm to 0.425 mm (C) 0.425 mm to 0.075 mm (D) 0.075 mm to 0.002 mm

Description : According to IS classification, the range of silt size particles is (A) 4.75 mm to 2.00 mm (B) 2.00 mm to 0.425 mm (C) 0.425 mm to 0.075 mm (D) 0.075 mm to 0.002 mm

Last Answer : (D) 0.075 mm to 0.002 mm

Harish buys petrol at rs 21, Rs.24 and Rs.27 per litre for 3 successive years. What approximately is the average cost per litre of petrol if he spends Rs.12000 each year? A) 23.74 B) 54.76 C) 24.66 D) 28.99

Description : Harish buys petrol at rs 21, Rs.24 and Rs.27 per litre for 3 successive years. What approximately is the average cost per litre of petrol if he spends Rs.12000 each year? A) 23.74 B) 54.76 C) 24.66 D) 28.99

Last Answer : A)  Total quantity of petrol consumed in 3 yr = (12000/21 +12000/24+12000/27) =12000(1/2 + 1/24 + 1/27) =12000(72+63+56/1512) =12000(191/1512) =(2292000/1512)litres Total amount spent = rs(3 *12000) = Rs.36000 Average cost = Rs(36000*1512/2292000) =Rs.23.74

Alkalinity in water may be caused due to (A) Calcium and magnesium bicarbonates (B) Sodium carbonate (C) Potassium carbonate (D) All the above

Description : Alkalinity in water may be caused due to (A) Calcium and magnesium bicarbonates (B) Sodium carbonate (C) Potassium carbonate (D) All the above

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Nesha scored 120 out of 150 in English, 120 out of 180 in mathematics and 160 out of 200 in Science. Find Nesha’s score as percentage: (i) in Mathematics (ii) in all the three subjects (on the whole). a) 66 2/3, 78 22/51 b) 71 23/5, 45 7/31 c) 54 13/33, 82 3/4 d) 60 3/4, 76 32/41

Description : Nesha scored 120 out of 150 in English, 120 out of 180 in mathematics and 160 out of 200 in Science. Find Nesha’s score as percentage: (i) in Mathematics (ii) in all the three subjects (on the whole). a) 66 2/3, 78 22/51 b) 71 23/5, 45 7/31 c) 54 13/33, 82 3/4 d) 60 3/4, 76 32/41 

Last Answer :  Answer: A (i) Percentage scored in Mathematics = 120/180 100  = 12000/180  =1200/18  = 66 2 /3 % (ii) Total maximum of all the three subjects = 150 + 160 + 200 = 510 and Total score in the ... percentage on the whole = (400/510 100)  = (40000/510)  = 4000/51  = 78 22/51 %

TLV of aldrin in public water supply system is about __________ μg/litre. (A) 0.5 (B) 17 (C) 357 (D) 1097

Description : TLV of aldrin in public water supply system is about __________ μg/litre. (A) 0.5 (B) 17 (C) 357 (D) 1097

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Hydrogen ion concentration in distilled water is (A) 10 -7 (B) 7 × 10 -7 (C) 10 7 (D) 7 × 10 7

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Why was the streetpilot 2720 discontinued and is it still a good product to buy used?

Description : Why was the streetpilot 2720 discontinued and is it still a good product to buy used?

Last Answer : It was discontinued simply because advances were made and it was no longer a good seller with better options out there. It is still a good buy if you can find one used for a cheap price.

Is the nokia 2720 a reliable phone?

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Does the Nokia 2720 have internet access?

Description : Does the Nokia 2720 have internet access?

Last Answer : The Nokia2720 would be a great simple, inexpensive phone for a minor. This particular phone does offer blue tooth capability- but is very limited with internet.

One year ago, the ratio between A's and B's salary was 4:5. The ratio of their individual salaries of last year and present year are 3:5 and 2:3 respectively. If their total salaries for the present year is Rs 6800, the present salary of A is A) Rs 4080 B) Rs 3200 C) Rs 4533.40 D) Rs 2720 E) NONE

Description : One year ago, the ratio between A's and B's salary was 4:5. The ratio of their individual salaries of last year and present year are 3:5 and 2:3 respectively. If their total salaries for the present year is Rs 6800, the present salary of A is A) Rs 4080 B) Rs 3200 C) Rs 4533.40 D) Rs 2720 E) NONE

Last Answer : Answer: B Given, the Ratio of A's last year and present year salary = 3:5. Let salary be 3x and 5x respectively. Also, the Ratio of B's in last year and present year salary = 2:3 Let salary be 2y and 3y ... i) and (ii), we get :- y=1200 and x=640. Hence, A's present salary is 5x=5 640=3200.

Find out the number of ways in which 12 Bangles of different types can be worn in 2 hands? A) 1260 B) 2720 C) 1225 D) 4096

Description : Find out the number of ways in which 12 Bangles of different types can be worn in 2 hands? A) 1260 B) 2720 C) 1225 D) 4096

Last Answer : Answer: D)  The first bangle can be worn in any of the 2 hands (2 ways). Similarly each of the remaining 11 bangles also can be worn in 2 ways. Hence total number of ways=2×2×2×2×2×2×2×2×2×2×2×2  =2^12  =4096