What is the source of litmus used for measuring pH?

Q: what does it mean if a bacteria tested positive for indole

A: Like several biochemical bacterial experiments, the results of the indole test are indicated by a…

Q: Why was sodium carbonate used in the extraction of caffeine from coffee?

A: Sodium carbonate: It is an inorganic compound is also known as soda ash, washing soda, and soda…

Q: What is the relationship of concentration and absorbance based on the table and what are the changes…

A: The concentration of a solute in a solution can be determined spectrophotometrically by passing a…

Q: What is the range of pocket thermometer?

A: They are lightweight digital thermometers. They have a built in pocket clip. It is constructed using…

Q: What is insensible water?

A: Water is one of the most important compound needed for the survival of life on earth.

Q: Why does blood cell become clear in distilled water?

A: There is a semi-permeable membrane which decides the entry and exit of the molecules from the cell,…

Q: Which method is suitable for determining the amount of water in food?

A: The food business relies on moisture content analysis to ensure food shelf life and quality, but…

Q: What are the diseases associated with water?

A: Answer- According to WHO the disease associated with water are following:-  1. Cholera 2. Darrhoia…

Q: What happened when a potato strip placed in distilled water?

A: Osmosis is the movement of of water from area of high concentration to area of low concentration…

Q: what will be the possible results in testing the solubility of oil in the water?

A: Polar or hydrophilic molecules are soluble in water and non-polar or hydrophobic molecules are…

Q: when extracting casein from milk, you accidentally added too much vinegar. what would happen, and…

A: Zwitterion is a neutral or hybrid molecule containing both positive and negative charges within…

Q: What would happen to the pH of your soap if you washed the precipitated soap in twice as much volume…

A: pH is the expression of negative logarithm of hydrogen ion concentration in a solute or solvent. pH…

Q: Why is there a need to filter the alkaline solution after adding the Barium chloride solution?

A: In an aqueous solution, barium chloride acts as a simple salt.  However when dissolved in water, it…

Q: What is the highest pH level?

A: pH can be defined as the scale  that is used to specify the acidity or basicity of the aqueous…

Q: What is the isoelectric point of AA? [Select]

A: Isoelectric point (pI) of amino acid: Isoelectric point is the pH at which amino acid shows no…

Q: Calculate pNF concentration in each cuvette using Beer-Lambert’s Law.  ε = 18,000 M-1 cm-1; b =…

A: Spectroscopy is the interaction between electromagnetic radiation and matter. If transmittance T…

Q: What does Sodium bicarbonate do in water softening?

A: Sodium carbonate softens hard water. Hard water contains high amount of dissolved calcium and…

Q: By the means of gas stoichiometry, how soaps are created?

A: Soap is made up of animal fat or plant oil, as well as caustic soda. It dislodges dirt from surfaces…

Q: Why potato strip increase in size when placed in distilled water?

A: Osmosis is defined as the movement of water molecules from the higher water potential region to the…

Q: When conducting a flame test for sodium iodide, is the result positive or negative?

A: An ionic compound is one that is formed between a metal or metalloid and a non-metal. A Flame test…

Q: What are the types of wax bath?

A: There are many types of therapeutic baths that are prescribed by the physician according to the…

Q: How does the concentration of H+ change when a culturemedium at pH 5 is adjusted to pH 9?

A: pH is the measure of acidity or basicity of a solution. If pH of a solution is 7, then it is…

Q: What should happen when you add magnesium salts to the soap solution and then what happens when you…

A: Soap is a cleansing and emulsifying agent that is made usually by action of alkali on fat or fatty…

Q: Name the process by which raisins get inflated when put in water.

A: Raisin is dried grape which is a component of dry fruits. As it is dried the watery component get…

Q: Why are proteins and amino acids considered to be natural buffers?

A: Buffer is a solution that resists the pH change when an acid or base is added to it. pH is measured…

Q: How did your soap compare to the commercially prepared soap?

A: If we wash oily/ greasy hands with soap then only oil/grease gets removed. In the…

Q: Distinguish between acid and rennet curds.

A: Curdling is the process through which curd is obtained by coagulating milk. The coagulation can be…

Q: What is the functional difference between TAE and TBE buffer?

A: A buffer is a solution capable of withstanding pH changes even when a base or acid solution is…

Q: What is the function of immersion oil?

A: Immersion oils are transparent oils that have specific optical and viscosity characteristics…

Q: What is the reagent used to detect glucose in the ph and temperature experiments? What is its…

A: Presence of Glucose is detected using Benedict's Test, Fehling's Test, and Barfoed's Test. Presence…

Q: If a 0.2g of oil consumed 1ml of sodium thiosulphate, calculate its Iodine value and classify the…

A: Lipids are classified into fats, oil, and wax. Fats are also called triglycerides, where three fatty…

Q: What ions turns litmus red? What ions turns litmus blue?

A: Litmus is defined as a combination of different dyes that are water soluble and are extracted from…

Q: Which of the following is incorrect about waxes?

A: The question is all about the wax that is used in our daily needs like in cosmetics, candles, car…

Q: What is the pH of a cleaning solution with a [H3O*] = 7.4 x

A:

Q: why is the different pH value of tap water and rainwater?

A: pH pH is a scale of measurement, which indicates the nature of a solution (acidic, basic or neutral)…

Q: How does a nitrate addition prevent sulfide souring ofcrude oil?

A: The presence of a higher concentration of sulfur in crude oil defines the sour crude oil. It is an…

Q: What happened to the pH when the cola and borax solution was added to the water? Explain

A: Answer.  When the cola was added to the water, the pH of the water went from neutral to acidic even…

Q: What is the detection principle of iodine test for starch

A: The iodine test is a quantitative analysis of carbohydrates to distinguish polysaccharides from…

Q: What made the pepper on water move upon the addition of the dishwashing liquid?

A: Water molecules are composed of two hydrogen molecules covalently bonded to one oxygen molecule.…

Q: what is the chemical formula for cooking oil?

A: Cooking oil consists of a mixture of the different types of the fatty acids added to cook and give…

Q: How to reduce/control selenium pollution?

A: Selenium is a trace element that has emerged as a contaminant of concern in water bodies. The…

Q: How acid rain is formed?

A: Acid deposition or acid rain is a broad term used for any type of precipitation with the acidic…

Q: How does the results of the pH meter and the pH paper compare with each other?

A: pH is the concentration of hydrogen ions present in the given solution. The determination of the pH…

Q: In excess of alkaloidal reagent, did the precipitate formed dissolve or not? What is  the evidence…

A: Alkaloid reagents such as tannic acid, potassium iodide, potassium ferrocyanide, or mercuric iodide…

Q: What is the difference between a tincture and an aqueous solution?

A: Given: Explain the difference between a tincture and an aqueous solution

Q: What is the role of indicator in determining if the substance is acid or base? (Note that the…

A: pH indicators are compounds which are natural dye. Those indicate if the solution is acidic or basic…