What is the name of the dye which turns red on contact with acid and blue with alkali?

What is the name of the dye which turns
red on contact with acid and blue with alkali?
by

1 Answer

Answer :

Litmus
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Related questions

An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change? (a) Baking powder (b) Lime (c) Ammonium hydroxide solution (d) Hydrochloric acid

Description : An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change? (a) Baking powder (b) Lime (c) Ammonium hydroxide solution (d) Hydrochloric acid

Last Answer : (d) Hydrochloric acid

Which of the properties listed below would you expect a solution to have if it is an acid? w) It feels slippery to the touch. x) It tastes bitter. y) It turns red litmus blue. z) It is a conductor of electricity.

Description : Which of the properties listed below would you expect a solution to have if it is an acid? w) It feels slippery to the touch. x) It tastes bitter. y) It turns red litmus blue. z) It is a conductor of electricity.

Last Answer : ANSWER: Z -- IT IS A CONDUCTOR OF ELECTRICITY.

Blue Litmus Paper turns _______ on contact with an acidic solution

Description : Blue Litmus Paper turns _______ on contact with an acidic solution

Last Answer : Red

A solution which turns red litmus to blue is called?

Description : A solution which turns red litmus to blue is called?

Last Answer : Metalloids

An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change ? -SST 10th

Description : An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change ? -SST 10th

Last Answer : D - The aqueous solution is a base as it turns red litmus solution blue. An acidic solution such as hydrochloric acid would reverse the change. In contrast, hydrochloric acid would turn blue ... not be able to reverse the change. These substances would only change red litmus solution to blue.

(i) `KI+H_(2)O+O_(3)rarrA+B+O_(2)` (A turns moist starch paper blue, B turns red litmus blue) (ii) A(dry)`+O_(3)rarrX+O_(2)` What is true about X in t

Description : (i) `KI+H_(2)O+O_(3)rarrA+B+O_(2)` (A turns moist starch paper blue, B turns red litmus blue) (ii) A(dry)`+O_(3)rarrX+O_(2)` What is true about X in t

Last Answer : (i) `KI+H_(2)O+O_(3)rarrA+B+O_(2)` (A turns moist starch paper blue, B turns red litmus blue) ... )` D. Average oxidation state of iodine in X is `+5`

One property of ammonia is – (1) It is insoluble in water (2) it is a odourless gas (3) It is a yellowish gas (4) Its aqueous solution turns red litmus blue

Description : One property of ammonia is – (1) It is insoluble in water (2) it is a odourless gas (3) It is a yellowish gas (4) Its aqueous solution turns red litmus blue

Last Answer : (4) Its aqueous solution turns red litmus blue Explanation: The main use of litmus is to test whether a solution is acidic or basic. For instance, ammonia gas, which is alkaline, colours the red litmus paper blue.

If a solution turns blue litmus red, its pH is likely to be : (1) 7 (2) 8 (3) 9 (4) 6

Description : If a solution turns blue litmus red, its pH is likely to be : (1) 7 (2) 8 (3) 9 (4) 6

Last Answer : (4) 6 Explanation: An acidic solution turns blue litmus red. On the pH scale, acids have values less than 7, whereas bases have values greater than 7. Solutions with pH equal to 7 are neutral in nature. Therefore the pH of the given solution is likely to be 6.

A solution turns blue litmus red, its pH is likely to be - (1) 11 (2) 9 (3) 5 (4) 10

Description : A solution turns blue litmus red, its pH is likely to be - (1) 11 (2) 9 (3) 5 (4) 10

Last Answer : (3) 5 Explanation: If the litmus paper turns red, it indicates the presence of an acid while if it turns blue, it indicates the presence of a base.

One property of ammonia is (1) It is insoluble in water (2) It is a odourless gas (3) It is a yellowish gas (4) Its aqueous solution turns red litmus blue

Description : One property of ammonia is (1) It is insoluble in water (2) It is a odourless gas (3) It is a yellowish gas (4) Its aqueous solution turns red litmus blue

Last Answer :  Its aqueous solution turns red litmus blue

Acid turns blue litmus paper to?

Description : Acid turns blue litmus paper to?

Last Answer : Red

With the DPI method of inspection after the contact time has elapsed the dye should be removed by: a) Spraying the surface with the remover till all dye has gone then wipe with clean cloth b) Spraying with the developer then wiping with a cloth c) Wipe clean, using a clean cloth soaked in a solvent remover d) it doesn’t matter how it is done as long as all traces of dye are removed

Description : With the DPI method of inspection after the contact time has elapsed the dye should be removed by: a) Spraying the surface with the remover till all dye has gone then wipe with clean cloth b) Spraying with ... remover d) it doesn't matter how it is done as long as all traces of dye are removed

Last Answer : c) Wipe clean, using a clean cloth soaked in a solvent remover

What is the primary dye used in manufacturing blue jeans, and khakis, respectively?

Description : What is the primary dye used in manufacturing blue jeans, and khakis, respectively?

Last Answer : answer:The color for blue jeans is indigo dye. Don’t know about khaki’s.

Is there a dye to turn urine blue in swimming pools?

Description : Is there a dye to turn urine blue in swimming pools?

Last Answer : Your pee will not turn blue if you pee in an outdoor swimming pool. Pee turning blue in a swimming pool is just used as comedy in the movies and is not likely to happen in real life.

Which of the following is a natural dye? (1) Crystal violet (2) Aniline blue (3) Alizarin (4) Phenolphthalein

Description : Which of the following is a natural dye? (1) Crystal violet (2) Aniline blue (3) Alizarin (4) Phenolphthalein

Last Answer : (3) Alizarin Explanation: Alizarin or 1,2- dihydroxyanthraquinone (also known as Mordant Red 11 and Turkey Red is an organic compound with formula C14H8O4 that has been used throughout history as a ... of the madder genus. In 1869, it became the first natural pigment to be duplicated synthetically.

Which of the following is a natural dye ? (1) Crystal violet (2) Aniline blue (3) Alizarin (4) Phenolphthalein

Description : Which of the following is a natural dye ? (1) Crystal violet (2) Aniline blue (3) Alizarin (4) Phenolphthalein

Last Answer : Alizarin

Why do the the alkali metals give blue solution ,when treated with liq NH3?

Description : Why do the the alkali metals give blue solution ,when treated with liq NH3? 

Last Answer : The alkali metals dissolve in liquid ammonia giving deep blue solutions which are conducting in nature. The blue colour of the solution is due to the ammoniated electron which absorbs ... ammonia.) In concentrated solution, the blue colour changes to bronze colour and becomes diamagnetic.  

Is there a way I can dye my hair a brighter red without bleaching it before coloring it?

Description : Is there a way I can dye my hair a brighter red without bleaching it before coloring it?

Last Answer : What color is your hair, naturally?

Is the meat purchased at the market red because of dye or blood?

Description : Is the meat purchased at the market red because of dye or blood?

Last Answer : answer:i guess it’s just the color of dead meat, althouh you’d think there would still be some blood in the slab of dead animal, maybe it’s red because it used to be a living creature now slaughterd because you won’t do it… j/k…or am i? i think it’s just the color, not the blood

Isthere red dye in pantoprazole i52?

Description : Isthere red dye in pantoprazole i52?

Last Answer : Do not know

What makes alkali red litmus paper ?

Last Answer : Alkali turns red litmus paper blue

An aluminium strip is kept immersed in a freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that a) Green solution slowly turns brown b) Lower end of the test tube becomes slightly warm c)A colourless gas with smell of burning sulphur is evolved c)Light green solution changes to blue

Description : An aluminium strip is kept immersed in a freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that a) Green solution slowly turns brown b) Lower end of the test ... c)A colourless gas with smell of burning sulphur is evolved c)Light green solution changes to blue

Last Answer : a) Green solution slowly turns brown

My blue star juniper has a yellow gummy substance foam that turns crusty when it dries. What is it?

Description : My blue star juniper has a yellow gummy substance foam that turns crusty when it dries. What is it?

Last Answer : Need Answer

What turns tetul blue litmus paper into what ?

Description : What turns tetul blue litmus paper into what ?

Last Answer : Tetul converts blue litmus into red litmus.

An unknown substance (P) functions as weak base in water. It produces silver mirror test. It reacts with dilute `HCl` to produce (Q) which turns blue

Description : An unknown substance (P) functions as weak base in water. It produces silver mirror test. It reacts with dilute `HCl` to produce (Q) which turns blue

Last Answer : An unknown substance (P) functions as weak base in water. It produces silver mirror test. It reacts with dilute `HCl` ... ` C. `NH_(2)OH` D. `HPO_(3)`

An unknown substance (P) functions as weak base in water. It produces silver mirror test. It reacts with dilute `HCl` to produce (Q) which turns blue

Description : An unknown substance (P) functions as weak base in water. It produces silver mirror test. It reacts with dilute `HCl` to produce (Q) which turns blue

Last Answer : An unknown substance (P) functions as weak base in water. It produces silver mirror test. It reacts with dilute `HCl` ... ` C. `NH_(2)OH` D. `HPO_(3)`

A colorless salt gives violet colour to Bunsen flame and also turns moisture litmus paper blue. It is :

Description : A colorless salt gives violet colour to Bunsen flame and also turns moisture litmus paper blue. It is :

Last Answer : A colorless salt gives violet colour to Bunsen flame and also turns moisture litmus paper blue. It is : A. `Na_(2) ... C. `NaNO_(3)` D. `K_(2)CO_(3)`

Why the blue colour of CuSO4 turns colourless during electrolysis of CuSO4 solution by platinum electrode.

Description : Why the blue colour of CuSO4 turns colourless during electrolysis of CuSO4 solution by platinum electrode.

Last Answer : The platinum electrodes are inert. Hence does not dissolve into the solution. The Cu++ ions (blue) present in the solution are discharged on the surface of cathode & OH - are ... a result of this electrolysis, blue coloured CuSO4 solution is slowly converted into colorless H2SO4 solution.

The best known and most frequently used test of the detoxicating functions of liver is (A) Hippuric acid test (B) Galactose tolerance test (C) Epinephrine tolerance test (D) Rose Bengal dye test

Description : The best known and most frequently used test of the detoxicating functions of liver is (A) Hippuric acid test (B) Galactose tolerance test (C) Epinephrine tolerance test (D) Rose Bengal dye test

Last Answer : Answer : A

Which is the most suitable dye for synthetic fibres? (A) Acid dye (B) Azoic dye (C) Pigment dye (D) Mordant dye

Description : Which is the most suitable dye for synthetic fibres? (A) Acid dye (B) Azoic dye (C) Pigment dye (D) Mordant dye

Last Answer : (A) Acid dye

Solution which resists changes in pH caused by the addition of acid or alkali?

Description : Solution which resists changes in pH caused by the addition of acid or alkali?

Last Answer : Buffer solution

The metal shows the characteristics of both acid and alkali?

Description : The metal shows the characteristics of both acid and alkali?

Last Answer : Aluminium

The only acid shows the characteristics of alkali?

Description : The only acid shows the characteristics of alkali?

Last Answer : Boric acid

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

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.

What is the nature of acid deficient alkali ?

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.

What is the difference between acid and alkali ?

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.

Acid, Of alkali Power No No Of the subject On Depending By ?

Last Answer : PH quality On Acid, Of alkali Power Depending Besides Those Oxy Of acids Central Atomic Zaron The value More Them Power More

Is the human stomach an acid or alkali?

Description : Is the human stomach an acid or alkali?

Last Answer : Acid I think

Is a banana an acid or alkali?

Description : Is a banana an acid or alkali?

Last Answer : The pH of a ripe banana is about 4.5 to 5.2, a weak acid.

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

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.

Is jellyfish venom an acid or alkali?

Description : Is jellyfish venom an acid or alkali?

Last Answer : it is alkali

Is washing powder an acid alkali or neutral?

Description : Is washing powder an acid alkali or neutral?

Last Answer : Washing powders are alkaline.

What is the missing word in this equation acid+alkali=something+water?

Description : What is the missing word in this equation acid+alkali=something+water?

Last Answer : The Answer is Salt. Acid + Akali = Water + Salt

is lime acid alkali aur neutral?

Description : is lime acid alkali aur neutral?

Last Answer : Answers is the place to go to get the answers you need and to ask the questions you want

Which of the following statements about nucleic acid is most correct? (A) Both pentose nucleic acid and deoxypentose nucleic acid contain the same pyrimidines (B) Both pentose nucleic acid and deoxypentose nucleic acid and deoxypentose nucleic acid Contain the same purines (C) RNA contains cytosine and thymine (D) DNA and RNA are hydrolysed by weak alkali

Description : Which of the following statements about nucleic acid is most correct? (A) Both pentose nucleic acid and deoxypentose nucleic acid contain the same pyrimidines (B) Both pentose nucleic acid and deoxypentose ... (C) RNA contains cytosine and thymine (D) DNA and RNA are hydrolysed by weak alkali

Last Answer : Answer : B

__________ treatment is done for appreciable improvement in viscosity index of lubricating oil. (A) Acid (B) Solvent extraction (C) Alkali (D) Clay

Description : __________ treatment is done for appreciable improvement in viscosity index of lubricating oil. (A) Acid (B) Solvent extraction (C) Alkali (D) Clay

Last Answer : (B) Solvent extraction

Plasticisers are added to polymers to improve their (A) Tensile strength (B) Softness & flexibility (C) Acid resistance (D) Alkali resistance

Description : Plasticisers are added to polymers to improve their (A) Tensile strength (B) Softness & flexibility (C) Acid resistance (D) Alkali resistance

Last Answer : (B) Softness & flexibility

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 ?

Description : 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 ?

Last Answer : A. Vol of 0 .1M HCl taken = 50ml Vol of .1MNaOH used for neutralization of unused acid=23.2ml Now, 23.2 ml of .1MNaOH =23.2ml of .1MHCl Vol of .1MHCl unused=23.2ml Vol of .1MHCl required ... NH3 solution contain nitrogen = 14*26.8/10*1000 Percentage of Nitrogen=14*26.8*100/10*1000*.257 =14.6%

Which is more dangerous alkali or acid?

Description : Which is more dangerous alkali or acid? 

Last Answer : It especially exposed alkali is more dangerous, use boric acid powder solution immediately. 

Use of gypsum is most beneficial in— (A) Saline soils (B) Alkali/Sodic soils (C) Acid soils (D) None of theseUse of gypsum is most beneficial in— (A) Saline soils (B) Alkali/Sodic soils (C) Acid soils (D) None of these

Description : Use of gypsum is most beneficial in— (A) Saline soils (B) Alkali/Sodic soils (C) Acid soils (D) None of these

Last Answer : (B) Alkali/Sodic soils