When Soap Is Scrubbed On A Stain Of Curry?

Hint: The above mentioned changes are because of the reactions between the compounds present in it. Soap contains sodium salts and is chemically a base as it releases OH- ions when dissolved in aqueous solutions. The curry which we eat usually contains spices,oil, vegetables and other ingredients.

1. The turmeric powder present in it is responsible for the stain and the changes as well.
2. Complete answer: As I already mentioned the compounds present in it, let us understand how they contribute to these changes.
3. So, when soap is scrubbed over a stain, the turmeric present in the curry reacts with the sodium hydroxide present in the soap and this reaction develops a reddish brown color.

Here turmeric acts as an indicator. Indicator is something which changes its color upon changing the concentration i.e. acidic or basic. When the same cloth is washed with plenty of water, it turns yellow because the sodium hydroxide is diluted upon addition of water and the reaction stops turning it back into yellow.

In the labs, litmus paper, phenolphthalein etc are used as indicators whereas some naturally occurring indicators are turmeric, rose petals, grape juice etc. Note: In the above reaction turmeric is said to act as an indicator because it shows reddish color in basic conditions and yellow color in neutral or acidic condition.

Upon scrubbing with soap, it shows a reddish brown color because soap is basic in nature and when water is added it turns yellow as water is neutral in nature.

When soap is scrubbed on the yellow stain of curry on a white cloth it turns into reddish brown colour?

Detailed Solution A stain of curry on white cloth becomes reddish-brown when soap is rubbed because curry contains turmeric which is a natural indicator whereas soap is basic in nature. Hence, option 1 is correct. When turmeric reacts with soap it turns reddish-brown.

Why does curry stain turn yellow?

Answer: (a) Turmeric is the natural indicator present in curry stain. (b) The yellow stain in the shirt when washed with soap, turns reddish-brown because soap is basic and gives a reddish-brown colour when reacts with the base. It turns yellow when rinsed with water due to the removal of soap.

When Amal washed a stain of vegetable curry on her dress with a washing bar then it turned red then it shows that the?

This happens because the soap solution is basic in nature which changes the colour of turmeric in the curry stain to red. Turmeric is a natural indicator.

Why does the curry stain in a dress becomes reddish brown when washed with soap?

Turmeric is a natural indicator that turns red when treated with the base. Since soaps are basic in nature they convert the yellow colour of turmeric to red.

What happens to its yellow colour on scrubbing with soap?

while eating food, you spill some curry on your shirt. You immediately scrub with soap, what happens to its yellow colour on scrubbing with soap ? What happens to the stain when the shirt is washed with plenty of water ? Text Solution Solution : On scrubbing with soap, its yellow colour changes to reddish brown.

What colour does a stain of curry on a white cloth turns when soap is rubbed on it?

Hint: The above mentioned changes are because of the reactions between the compounds present in it. Soap contains sodium salts and is chemically a base as it releases OH- ions when dissolved in aqueous solutions. The curry which we eat usually contains spices,oil, vegetables and other ingredients.

The turmeric powder present in it is responsible for the stain and the changes as well. Complete answer: As I already mentioned the compounds present in it, let us understand how they contribute to these changes. So, when soap is scrubbed over a stain, the turmeric present in the curry reacts with the sodium hydroxide present in the soap and this reaction develops a reddish brown color.

Here turmeric acts as an indicator. Indicator is something which changes its color upon changing the concentration i.e. acidic or basic. When the same cloth is washed with plenty of water, it turns yellow because the sodium hydroxide is diluted upon addition of water and the reaction stops turning it back into yellow.

In the labs, litmus paper, phenolphthalein etc are used as indicators whereas some naturally occurring indicators are turmeric, rose petals, grape juice etc. Note: In the above reaction turmeric is said to act as an indicator because it shows reddish color in basic conditions and yellow color in neutral or acidic condition.

Upon scrubbing with soap, it shows a reddish brown color because soap is basic in nature and when water is added it turns yellow as water is neutral in nature.

How do you get curry stains off after washing?

Vinegar – Vinegar is also effective when it comes to getting rid of curry stains. Just mix one tablespoon of liquid dish washing detergent with a tablespoon of white vinegar and around half a litre of cold water, then apply the solution to the stain with a clean cloth. Use a sponge to soak up the excess liquid, if there is any. Repeat the process until the stain disappears.

What will happen if you try to wash curry stains on your shirt with soap?

What will happen if you try to wash curry stains on your shirt with soap? Curry contains turmeric, which is a natural acid-base indicator. When a shirt with curry stains is dipped in soap solution(which is actually a base) it turns curry stains red in colour.

Can yellow stain be removed?

Mrs. Fastidious: 8 washing methods to remove yellow stains on white clothes thoroughly The problem of white cloth with yellow stains is often caused by sweat stains. The stains that are washed out are poor, turning yellow. That we are difficult to get rid of Until we solved the problem by not wearing that shirt again or buying a new shirt instead But today, the housewife has better tips than that. Shampoo or dishwashing liquid Use shampoo or dishwashing liquid for our household items. Apply to yellow stains from sweat and dirt and leave it for 30 minutes, then clean as usual Clothes will become clean as new. Baking soda Baking soda is a very versatile product as it removes yellow stains on the collar.

Then mix 4 tablespoons of baking soda with 1⁄2 cup of water, stir well, then apply to the stained area and rub gently, leave it for about 20 minutes before washing. soap Soap has another property that helps to get rid of yellow stains from sweat in various areas of clothing. Not allergic to conventional laundry products Plus it is gentle and does not hurt the fabric itself When the clothes are stained, they must be cleaned as soon as possible.

Start by smearing plain water onto the stain. Then rub the stain with a bar of soap and rub it into a bubble until the stain fades away. And then taken to wash and clean Salt Just use 1 tablespoon of salt per 1 cup of water and stir together. Then use a sponge dipped in the said mixture and rub gently until the yellow stains disappear. And then take it to wash Ammonia Mix equal parts ammonia and water and pour it over the yellowish stain to soak.

Let it dry or until the shirt is washed. Without ammonia, hydrogen peroxide can be used instead. Oxiclean Remove the oxy clean and mix with a little water. And then rubbed on the yellow stains Use an old toothbrush to remove the stain and let it sit for a few minutes, but if it is a heavy stain, let it sit for 2 hours, then wash it as normal.

Lemon juice Before washing the clothes, mix equal amounts of lemon juice and water with the stain. And take it to smear it on the stain Then, gently scrub until the stain is removed, then wash again. The shirt will come back clean and white. Vodka Mix the same amount of vodka with water.

Pour them into a spray bottle to spray them on the stains. Leave it for a while And then taken to wash and clean as usual to make clothes look like new again Hopefully these eight methods will help you more or less get rid of yellow stains on white fabrics. If you want to get white laundry products, you can buy them at all Big C stores or buy online Click,

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What happens when you wash vegetables with soap?

Based on questions and comments I’ve gotten over the years when I have written about food safety or fruit and vegetable primers, I started researching a story about why it’s not a good idea to wash your produce with soap. Then I walked in on scrubbing potatoes with a bit of dish soap.

“I am literally working on a story about this right now!” I shouted with louder self-righteousness than I meant to. So, let’s come clean. Washing your fruit and vegetables with soap can not only be bad for them, but it can be bad for you, as well. Inevitably, the question arises: How come I can wash my dishes and hands with soap but not my food? “It’s a tough analogy,” says Jason Bolton, extension professor and food safety specialist at the University of Maine Cooperative Extension.

The biggest difference is that your hands and dishes are not permeable surfaces you will be eating. Your fruits and vegetables are, though the permeability varies by type. The issue: Your produce may absorb soap, or you may not end up rinsing off all the residue,

1. According to the Agriculture Department, “Consumers should not wash fruits and vegetables with detergent, soap or commercial produce washes.
2. These products are not approved or labeled by the U.S.
3. Food and Drug Administration (FDA) for use on foods.
4. You could ingest residues from soap or detergent absorbed on the produce and get sick.” Remember, you will be eating your fruit and vegetables, which matters even if you peel them, because of the permeability issue.

“Soap, in a lot of cases, has a different chemistry than the body should be ingesting,” Bolton says. Soap can cause irritation to your gastrointestinal system, leading to vomiting or diarrhea. It could even interfere with friendly microbes in your gut.

1. Moreover, soap doesn’t taste good! It can impart off-flavors and damage the delicate cells of fruits and vegetables,
2. Eep in mind that soap works not necessarily by busting germs on contact, but by lifting microbes and dirt from your skin.
3. The Centers for Disease Control and Prevention notes that the behavioral aspect is just as important: “People tend to scrub hands more thoroughly when using soap, which further removes germs,” thanks to the friction caused by lathering and scrubbing.

With produce, you can accomplish much of the same thing with clean, cool running water and, when needed, a vegetable brush. Ben Chapman, a professor and food safety extension specialist at North Carolina State University and one of the proprietors of the food-safety themed Barfblog, says that cool running water can remove 90 to 99 percent of pathogens, including E.

coli, salmonella, listeria, etc., we don’t want on our produce. (Hat tip to HuffPost for reporting that last year,) That’s based on “a whole body of research on produce washing” looking at a variety of fruits and vegetables and a variety of pathogens, Chapman says. “Bottom line from the literature is that rinsing produce is doing something, washing with soap is really not doing anything more, and can only increase risk as soap residue is not intended to be consumed and has led to toxicity/nausea in certain cases,” he says.

In a study, Bolton and his colleagues found that distilled water was just as effective or more effective at removing microbes and pesticides than three products more often used in commercial kitchens. They note that clean tap water is equally acceptable, though you should pay attention to temperature.

Using water that’s either very hot or very cold can be problematic and actually cause the produce to absorb the microbes you’re trying to wash away, Bolton says. (Cooking also is effective at killing microbes, but you should still wash your produce first.) Using a clean produce brush on firm produce or produce that has a thick rind (cucumbers, apples, melons, root vegetables, citrus) can further reduce the presence of dirt, microbes and pesticides.

Be sure to frequently wash and sanitize the brush, such as in the dishwasher or in boiling water for 20 seconds, the University of Delaware Cooperative Extension recommends, More delicate produce can be gently scrubbed with your hand, according to the Cornell Cooperative Extension,

• Drying produce with a clean dish towel or paper towel is another important step to help remove contaminants.
• Run herbs under running water or swish through a bowl of cool water.
• Lettuce and other greens can be separated into leaves (compost the outer ones) and individually rinsed or soaked in a bowl of cool water for a few minutes, after which you want to rinse them.

Dry herbs or greens with towels or in a salad spinner. You need not clean prewashed, pre-bagged packages of greens that are labeled ready-to-eat. Doing so can actually increase the risk of cross-contamination, Chapman says. For more guidance, Colorado State University Extension has a good guide on washing produce by type.

How can you make the reddish brown colour to yellow again?

A white shirt has a yellow stain of curry. When soap is rubbed on this shirt during washing, the yellow stain turns reddish – brown. On rinsing the shirt with plenty of water, the reddish – brown stain turns yellow again. (a) Name the natural indicator present in curry stain.

B) Explain the changes in colour of this indicator which take place during washing and rinsing the shirt. (c) What is the nature of soap (acidic / basic) as shown by the indicator present in curry stain ? Uh-Oh! That’s all you get for now. We would love to personalise your learning journey. Sign Up to explore more.

Sign Up or Login Skip for now Uh-Oh! That’s all you get for now. We would love to personalise your learning journey. Sign Up to explore more. Sign Up or Login Skip for now : A white shirt has a yellow stain of curry. When soap is rubbed on this shirt during washing, the yellow stain turns reddish – brown.

What colour change occurs when a stain of turmeric is washed with soap?

Soaps are basic in nature. So when a turmeric stain is washed with a soap solution, the stain colour changes to red.

Why do stains appear after washing?

How to get liquid laundry detergent stains out of clothes – Liquid laundry detergent stains can show up if your detergent wasn’t properly rinsed away. Fortunately, it’s fairly easy to remove these types of stains. Start by soaking the stained garment in warm or hot water, depending on laundry care label instructions, then use an oxygen-based pretreatment.

• This method is also an effective way to help remove detergent stains from white clothes.
• Learn more about removing discolorations from white clothes,
• Some detergents leave behind blue-colored stains.
• Fortunately, the artificial color of the detergent is no more permanent than clear or white detergent stains.

You can get blue detergent stains out of clothes by dampening them with warm water and applying a pretreatment directly to the stain. Let the pretreatment sit for at least 10 minutes before rinsing with warm water. If the stain hasn’t completely dissolved, repeat the process before placing laundry in the dryer.

What happens when turmeric is added to soap solution?

Turmeric contains a chemical called curcumin, which remains yellow in an acidic or neutral solution, but turns red in a base. When you add turmeric into a basic solution (soap water, baking soda), it changes to a deep red colour (bottom left of photo).

Is curry acidic or basic?

The correct answer is Basic in nature.

What is the colour change of soap solution?

Soap solution is basic in nature and turns the color of the solution into yellow.

Why does a yellow food stain on a cloth turns red when rubbed with soap?

Turmeric stains on the shirt turn red when washed with soap Option 4 : Soap solution is alkaline Free 10 Questions 10 Marks 10 Mins The correct answer is Soap solution is alkaline. Concept:

Indicators are the substances that are used to identify whether the given substance is an acid or a base. There are two types of indicators:

Natural: These indicators are obtained from natural sources like plants. Turmeric, litmus, china rose petals, etc., are some of the naturally occurring indicators. The most commonly used natural indicator is litmus. It is extracted from lichens. It is available in the form of a solution, or in the form of strips of paper, known as litmus paper. Generally, it is available as red and blue litmus paper. Man-made: Phenolphthalein, Methyl orange are some of the man-made indicators.

Explanation:

The indicators change their colour when added to a solution containing an acidic or a basic substance. Turmeric is a natural indicator. It contains the substance

curcumin which changes colour with pH.

When a substance is basic, the colour is red, whereas when the substance is acidic, the colour of turmeric turns yellow to brown

Turmeric stains on the shirt turn red when washed with soap because the soap solution is basic in nature which changes the yellow colour of Turmeric into red colour. It is because turmeric contains tartaric acid, while the soap contains a sodium hydroxide base. When an acid reacts with a base, a neutralization reaction takes place and the stain becomes neutral.

Neutralization Reaction

A neutralization reaction can be defined as a chemical reaction in which an acid and base quantitatively react together to form salt and water as products.

Saponification

Saponification is the hydrolysis of an ester with NaOH or KOH to give alcohol and sodium or potassium salt of the acid.

India’s #1 Learning Platform Start Complete Exam Preparation Daily Live MasterClasses Practice Question Bank Mock Tests & Quizzes Trusted by 3.4 Crore+ Students : Turmeric stains on the shirt turn red when washed with soap

How do you get yellow curry stains out of white clothes?

Vinegar – Vinegar is also effective when it comes to getting rid of curry stains. Just mix one tablespoon of liquid dish washing detergent with a tablespoon of white vinegar and around half a litre of cold water, then apply the solution to the stain with a clean cloth. Use a sponge to soak up the excess liquid, if there is any. Repeat the process until the stain disappears.

What happens when turmeric stain is washed with soap?

Soaps are basic in nature. So when a turmeric stain is washed with a soap solution, the stain colour changes to red.

How do you remove yellow soap stains?

Easy Ways to Remove Yellow Stains from White Clothes: 10 Steps White clothes are notorious for being easily stained. Whether it’s from armpit sweat, rust, or a yellow sports drink, yellow stains can ruin your best-looking white shirts, pants, or bedding.

1. 1 Add vinegar to your laundry to both remove stains and soften fabric. White distilled vinegar works as both a stain remover and a fabric softener when added to a laundry load. Simply pour 0.25 cups (59 mL) of vinegar into your washing machine during the rinse cycle to clean and soften your stained white clothes.
   • Avoid using vinegar in your laundry along with chlorine bleach, since this combination will produce fumes that can be harmful to breathe.
   • Note that using vinegar in the laundry may harm clothes made of silk, acetate, or rayon.
2. 2 Use hydrogen peroxide, dish soap, and baking soda on pesky stains. Combine 1 tablespoon (15 mL) each of hydrogen peroxide, dish soap, and baking soda into a single mixture, then use the back of a spoon to apply the mix to the stain so that it’s completely covered. Let it sit for 1 hour, then wash the clothes as normal.
   • Note that there is a small chance that the coloring of the dish soap may discolor your clothes, so use clear, colorless dish soap for best results.
   • If the stain doesn’t come off after trying this method once, a second application of the cleaning mixture will often do the trick.

   EXPERT TIP Green Cleaning Expert Susan Stocker runs and owns Susan’s Green Cleaning, the #1 Green Cleaning Company in Seattle. She is well known in the region for outstanding customer service protocols — winning the 2017 Better Business Torch Award for Ethics & Integrity —and her energetic support of green cleaning practices. Susan Stocker Green Cleaning Expert You can also try baking soda on its own. To remove yellow stains from clothing, mix 4 tbsp. of baking soda with 1 quart of warm water, and use that to scrub the clothes. Let the garment sit for 1-2 hours, then rinse and check to see if the stain is completely removed. If it is, wash the clothing as normal. If not, repeat all of the steps until the stain is gone. Advertisement

3. 3 Try adding lemon juice to your laundry with your detergent. This will not only get rid of stains, but will also give your clothes a nice lemony smell. Add 1 cup (240 mL) of the lemon juice to your laundry along with your detergent, then wash as normal.
   • Don’t use lemon juice with colored clothing, since it may accidentally bleach them.
4. 4 Scrub cotton clothes with white toothpaste before washing them. Toothpaste has a number of surprising uses besides brushing your teeth, one of which is removing stains from clothing. Wet your clothing, then use an old toothbrush to apply a thin layer of white toothpaste to the stained area. Scrub the stain vigorously for about 30 seconds, then rinse the clothing in water.
   • For the best results on white clothing, use a toothpaste with whitening properties. Avoid using colored toothpaste, since this may actually stain your white clothes even worse!
   • The toothpaste method typically works well on cotton clothes, although it may not work on other fabrics.
5. 5 Treat stains with crushed aspirin and water if that’s all you have around. Crush 3-4 aspirin tablets into a powder, then mix the powder with 0.5 cups (120 mL) of hot water to form a paste. Rub this paste onto the stain and allow it to sit for 2 hours. Finally, wash your stained clothing as normal in a hot water cycle.
   • The crushed aspirin method works because the main ingredient in aspirin is salicylic acid, which is just as effective at removing stains as vinegar or lemon juice.
   • Note that the crushed aspirin should only be used on white clothing, as it may discolor your colored fabrics.

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1. 1 Use a stain-removing laundry detergent to remove stains in the wash. Simply tossing your white clothes into the wash with a laundry detergent specially designed to get rid of stains is probably the easiest way to get rid of yellow stains. Wash your clothes in the laundry as you normally would with the stain-removing detergent to remove the stains in 1 step.
   • There are a lot of detergents on the market that will not only remove your stains, but also leave your clothes smelling terrific!
   • You can find laundry detergent designed to remove stains at most grocery stores and mass retailers where detergent is sold.
2. 2 Wash your clothes with 1 capful of bleach if they aren’t delicates. Add the capful of bleach to a load of white clothes along with detergent to remove stains while also improving your clothes’ overall shine. However, make sure your clothes can be safely bleached before you wash them this way. Avoid bleaching colored clothes or delicates, as the bleach might damage them.
   • You can check to see if your clothes can be safely bleached by looking at their tags. If a hollow white triangle is on the tags, this means they can be safely bleached. If the triangle has diagonal stripes in the middle of it, those clothes can only be treated with non-chlorine bleach.
   • If the tag on your clothes contains a solid triangle with an X on top of it, that means they cannot be bleached at all.
3. 3 Add bluing agent to the laundry to remove stains and whiten clothes. Bluing agent adds the slightest hint of blue to your clothes, which actually combines with the yellow hue of your stains to make them white. Mix the agent with cold water, per the instructions on the bottle, then toss it into your laundry machine with the detergent and the stained clothes and wash them as normal.
   • You can buy bluing agent at any department store or grocery store that sells laundry detergent.
   • Note that bluing agent isn’t actually a cleaning agent, so although it will offset the yellow hue of your stains, it won’t do anything to make them cleaner.
4. 4 Clean your clothes with borax if the stains also smell. Borax is a naturally occurring mineral that helps to remove stains from clothes and even deodorizes and brightens them. Add 0.5 cups (120 mL) of borax to your laundry along with detergent at the beginning of the wash cycle to wash clothes with odorous stains.
   • Borax is also a great multipurpose cleaner you can use to clean the inside of your car, your pet’s bedding, and even the washing machine itself!
5. 5 Use rust remover to remove yellow stains caused by rust. If the stains on your clothes were caused by rust, there are a number of commercial products specifically designed to remove rust that you can use. Simply add the rust remover to your washing machine as it’s filling with water and let the clothes soak in it for 5 minutes. Then, add your detergent and wash the clothes as normal.
   • Be sure to follow the usage instructions on the bottle very closely, as rust remover fumes can be dangerous when inhaled.
   • To best protect yourself, wear rubber safety gloves when handling rust remover.

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Advertisement This article was co-authored by, Susan Stocker runs and owns Susan’s Green Cleaning, the #1 Green Cleaning Company in Seattle. She is well known in the region for outstanding customer service protocols — winning the 2017 Better Business Torch Award for Ethics & Integrity —and her energetic support of green cleaning practices. This article has been viewed 267,698 times.

• Co-authors: 7
• Updated: June 12, 2022
• Views: 267,698

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Thanks to all authors for creating a page that has been read 267,698 times.

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: Easy Ways to Remove Yellow Stains from White Clothes: 10 Steps

Indira Usman