Differentiate saturated and unsaturated hydrocarbon
Solution:
ICSE
Q. Give a test that can be used to differentiate between saturated and unsaturated hydrocarbons.
Solution: Bromine water test – Bromine water is used to differentiate between unsaturated compounds (like alkenes and alkynes) and saturated compounds. For this purpose, bromine is used in the form of bromine water. A solution of bromine in water is called bromine water. Bromine water has a red-brown colour due to the presence of bromine …
Q.What is hydrogenation? What is its industrial application?
Solution: Hydrogenation of oil : long fatty acids of Unsaturated hydrocarbons add hydrogen in the presence of catalysts such as palladium or nickel to give saturated hydrocarbons.This reaction is commonly used in the hydrogenation of vegetable oils using a nickel catalyst. Vegetable oils generally have long unsaturated carbon chains while animal fats have saturated carbon chains.You must have …
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Q.What change will you observe if you test soap with litmus paper (red and blue) ?
Solution: When soap dissolves in water, alkaline NaOH or KOH forms, making the solution alkaline. The red litmus turns blue in the solution, but the blue litmus stays blue in the soap solution.
Q.Explain the formation of scum when hard water is treated with soap?
Solution: Scum is produced from reaction of hard water with soap. Calcium and magnesium chloride and sulphate present in the hard water form an insoluble precipitate that stick as a white which is also called as scum.
What is Power alcohol?
Solution Ethyl alcohol is called power alcohol because it is used to generate power for IC engines. It is also used as an additive to motor fuels to act as fuel for internal combustion engine. The Power alcohol is mixture of generally 80% petrol and 20 – 25 % alcohol.
What are vinegar and its uses?
Solution Ethanoic acid is commonly called acetic acid and belongs to a group of acids called carboxylic acids. 5-8% solution of acetic acid in water is called ‘vinegar.‘ It can be used to cook, bake, clean, and control weeds. It may also help with weight loss and lower cholesterol and blood sugar levels. It is …
What is saponification ?
Solution : Saponification On treating ester with an alkali, the ester is converted back to alcohol and sodium salt of carboxylic acid. This reaction is known as saponification . because it is used in the preparation of soap. Soaps are sodium or potassium salts of long chain carboxylic acid.
Formation of coal and petroleum
Coal and petroleum have been formed from biomass which has been subjected to various biological and geological processes. Coal is the remains of trees, ferns, and other plants that lived millions of years ago. These were crushed into the earth, perhaps by earthquakes or volcanic eruptions. They were pressed down by layers of earth and …
What are the Uses of Diamond ?
USES OF DIAMONDS People have always been attracted to beautiful, rare objects. Diamonds have been treasured as gemstones since ancient times, admired for their beauty, and people still think of diamonds as the ultimate luxury in jewellery. However, diamonds are valued for far more than their captivating beauty. Their unique physical properties make them prized …