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Answer :

Alkali loses its alkalinity in mitigation reaction

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Description : Buffer solutions have constant acidity and alkalinity because: (1) they have fixed value of pH (2) these give unionised acid or base on reaction with added acid or alkali (3) acids and alkalies in these solutions are shielded from attack by other ions (4) they have large excess of H+ or OH– ions

Last Answer : these give unionised acid or base on reaction with added acid or alkali

Description : What is the level of acidity and alkalinity of soil for wheat cultivation ?

Last Answer : For wheat cultivation, soil acidity and alkalinity level should be 6.0 to 7.0 .

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

Description : Why does a farmer plough his fields in summer? (a) To prevent alkalinity of soil (b) To prevent acidity of soil (c) To prevent the surface from becoming hard (d) To fertilize the soil shop.ssbcrack.com

Last Answer : Ans: (c)

Description : Which of the following indicates the types of soil erosion in decreasing order of damage caused In India (a) Ravine erosion .and gullies, alkalinity and salinity weeds and water-logging (b) Alkalinity ... and weeds (c) Water-logging, weeds, salinity and ravine erosion (d) All are equally damaging

Last Answer : Ans: (a)

Description : Lipose present in the stomach cannot hydrolyze fats owing to (A) Alkalinity (B) Acidity (C) High acidity (D) Neutrality

Last Answer : Answer : C

Description : Gypsum is added to the soil? (a) To increase the alkalinity (b) To decrease the acidity (c) To decrease the alkalinity (d) As an insecticide

Last Answer : Ans:(b)

Description : Which of the following is caused by the higher concentration of Nitrogen and Phosphorous? (1) Eutrophication (2) Hardness (3) Alkalinity (4) Acidity

Last Answer : (1) Eutrophication Explanation: Higher concentration of Nitrogen and Phosphorus causes Eutrophication.

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 : What are the advantages of fertigation in agriculture? 1. Controlling the alkalinity of irrigation water is possible. 2. Efficient application of Rock Phosphate and all other phosphatic fertilizers is possible. 3. Increased availability of ... 1, 2 and 4 only c) 1, 3 and 4 only d) 2, 3 and 4 only

Last Answer : c) 1, 3 and 4 only

Description : In water treatment plant, zeolite process is used to remove the __________ of water. (A) Acidity (B) Alkalinity (C) Hardness (D) Iron & zinc

Last Answer : (C) Hardness

Description : The purpose of adding Na2CO3 to water of low alkalinity is to (A) Permit the use of alum as a coagulant (B) Increase the softening capacity of zeolite (C) Facilitate easy regeneration of zeolite (D) All (A), (B) and (C)

Last Answer : (A) Permit the use of alum as a coagulant

Description : Water may contain (A) Bicarbonate alkalinity (B) Carbonate alkalinity (C) Hydroxide alkalinity (D) All the above

Last Answer : (D) All the above

Description : Disappearance of pink colour of water of a well due of KMnO4 indicates that water contains (A) Acidity (B) Alkalinity (C) Turbidity (D) Organic matter

Last Answer : (D) Organic matter

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

Description : The most prominent single cause of corrosion in boiler-tubes, drums, economisers and steam superheaters in a thermal power plant boiler is the (A) Water alkalinity & leakage (B) Hydrazine addition during ... treatment (C) Release of non-condensable gas from water in the boiler (D) Scale formation

Last Answer : (C) Release of non-condensable gas from water in the boiler

Description : Boiler water pH refers to a quantitative figure that expresses the acidity or alkalinity of boiler water. Ideally it should be between • 8.5 to 9.5 • 7.5 to 8.5 • 9.5 to 10.5

Last Answer : • 8.5 to 9.5

Description : The most common constituents of alkalinity in natural water are measured by titrating the water sample with 0.02 N H2SO4 using (a) Eriochrome Black T and Ferroin indicators (b) Ferroin ... (c) Phenolphthalein and Methyl Orange indicators (d) Methyl Orange and Ericochrome Black T indicators

Last Answer : (c) Phenolphthalein and Methyl Orange indicators

Description : SO2 and NO2 Produce pollution by increasing a) Alkalinity b) Acidity c) Neutrality d) Buffer action.

Last Answer : b) Acidity

Description : Which of the following is caused by the higher concentration of Nitrogen and Phosphorous ? (1) Eutrophication (2) Hardness (3) Alkalinity (4) Acidity

Last Answer : Eutrophication

Last Answer : Copper ' Of alkali With Reaction By No.

Description : Reimer-Tiemann reaction of phenol with cholorform and aqueous alkali takes place through the intermediate formation of:

Last Answer : Reimer-Tiemann reaction of phenol with cholorform and aqueous alkali takes place through the ... carbanions C. carbon radicals D. carbenes

Description : Reaction of `SO_(2)` with water and alkali is similar to that of

Last Answer : Reaction of `SO_(2)` with water and alkali is similar to that of A. `CO_(2)` B. `SO_(3)` C. CO D. `NO_(2)`

Description : What is the reaction between an acid and an alkali is called?

Last Answer : Neutralization is the reaction between an acid and an alkali.Neutralization usually results in the formation of a salt from thereaction.

Description : Pick out the wrong statemen (A) Autocatalytic reactions are exemplified by microbial fermentation reactions (B) The slowest step has the greatest influence on the overall reaction rate in case of an ... reaction (D) Hydrolysis of ester in presence of alkali or acid is a zero order reaction

Last Answer : (D) Hydrolysis of ester in presence of alkali or acid is a zero order reaction

Description : You are given a solution of an alkali. In order to estimate its concentration in terms of normality , you need to know

Last Answer : You are given a solution of an alkali. In order to estimate its concentration in terms of ... the alkali present in it and its equivalent weight.

Description : DNA is (A) Usually present in tissues as a nucleo protein and cannot be separated from its protein component (B) A long chain polymer in which the internucleotide linkages are of the diester type between C-3 ... linkages are between C-2' and C-5' (D) Hydrolyzed by weal alkali (pH9 to 100°C)

Last Answer : Answer : B

Description : Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to ... without any treatment (C) Diluted with fresh water to reduce its acidity (D) None of these

Last Answer : (A) Neutralised by alkali treatment

Description : Which of the following if present in iron ore, enhances its value? (A) Alumina (B) Alkali oxide (C) Lime & Magnesia (D) None of these

Last Answer : C) Lime & Magnesia

Description : A solution which resists change in its pH value on addition of acid/alkali is called the __________ solution. (A) Neutral (B) Ideal (C) Buffer (D) Zero pH

Last Answer : Option C

Description : What is the oxidation number of alkali metals ?

Last Answer : Oxidation number of alkali metals + 1.

Description : What is 'acid and alkali' according to scientist Lewis ?

Last Answer : Lewis, the scientist who advocated the electronic doctrine of acid and alkali. According to his theory, the compound that receives electrons is called acid. And the compound that rejects electrons is called alkali.

Description : What are the alkali metals ?

Last Answer : The remaining 6 elements of hydrogen in group 1 of the periodic table .

Description : What is the nature of acid deficient alkali ?

Last Answer : The stronger the acid , the more proton it tends to drop. Then the tendency of the acid-binding base to bind to protons is very low. That is, it is mildly alkaline. Conversely, mild acids are ... it is highly alkaline. Thus the acid-binding base is mild and the mild acid-binding base is intense.

Description : Why Copper Oxide Is Not Alkali ?

Last Answer : Substances that soothe the acid and destroy its characteristic properties are therefore alkaline. Alkalis are those substances which dissolve in water. Copper oxide only soothes the acid and eliminates its characteristic ... , but it does not dissolve in water. So copper oxide is not an alkali.

Description : Why is NH3 called Lewis Alkali ?

Last Answer : According to the Lewis theory of acid-base, all the compounds that can give electrons to protons are called bases. The compounds containing mainly free electrons behave like Lewis alkalis. The nitrogen of NH 3 ... it can donate a pair of electrons to protons. That is why it is called Lewis alkali.

Description : What is the most electrically positive and active metal of the alkali metal period ?

Last Answer : Alkali metal is the most electrically positive and active metal of all time .

Description : What is alkali ?

Last Answer : The compounds that react with acids to produce salts and water are called bases.

Description : What is the difference between alkali and alkali ?

Last Answer : Alkalis are a class of chemical compounds that are capable of absorbing hydrogen ions. Such as metal oxides or hydroxides are alkalis. Water-soluble alkalis that provide hydroxide ions ( OH−) are called alkalis ... is why it is said that not all alkalis are alkalis , but all alkalis are alkalis.

Description : Name a good alkali-free soap ? I have skin diseases so I want to stay clean by using alkali free soap instead of normal soap.

Last Answer : You can use Dettol soap. Dettol is much more alkali free. It will not be harmful for your skin disease.

Description : What is the color of acute alkali ?

Last Answer : The color of intense alkali is purple.

Description : What is the color of weak alkali ?

Last Answer : The color of weak alkali is blue.

Description : What is alkali ?

Last Answer : Alkalis that give hydrochloride ( OH-) ions in aqueous solution are called alkalis

Description : What is alkali metal ?

Last Answer : The first class elements of a periodic table are called alkali metals.

Description : What is the difference between acid and alkali ?

Last Answer : The pH value of any metal is limited to 1 to 14. If the pH value of any metal is less than 7 then the metal is acidic and if it is more than 7 then the metal is alkaline.

Description : What is alkali ?

Last Answer : Alkalis are a class of chemical compounds that are capable of absorbing hydrogen ions. Such as metal oxides or hydroxides are alkalis. The water-soluble alkali that provides hydroxide ions ( OH−) is ... than that of plain water. Notable among the most common bases are sodium hydroxide , ammonia.

Last Answer : Alkali reacts with acid to produce salt and water