Write the reason for CO2 can be easily liquefied and even solidified.
Carbon dioxide can be easily liquefied as well as solidified because the inter-molecular force of attraction between the molecules of... View Article
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How to convert benzaldehyde to benzophenone?
Steps to convert benzaldehyde to benzophenone When benzaldehyde is oxidized in the presence of acidified potasium permanganate, it results in... View Article
What is the main difference between Atomic Orbital and Molecular Orbital?
The main difference between Atomic Orbital and Molecular Orbital is that Atomic Orbital contains electrons that are influenced by one... View Article
Whether calcium is said to be a metal or non-metal?
Metals in the pure state generally shine. The shine on the metallic surface is called the metallic lustre. Calcium (Ca)... View Article
Why are school bells made up of metal?
Bells made up of metals and not from wood because metals have the capability to produce sound when hit with... View Article
Balance the following chemical equation: Fe + H2O → Fe3O4 + H2
Answer: The representation of a chemical reaction in the form of substances is known as a chemical equation. The equation... View Article
Why is calcium sulphate hemihydrate called plaster of Paris?
Answer: Plaster of Paris is a quick-setting gypsum plaster made from a fine white calcium sulphate hemihydrate powder that hardens... View Article
Fatty foods become rancid due to process of
a) Reduction b) Oxidation c) Hydration d) None of the above Answer: b) Oxidation Explanation: Fatty foods become rancid due... View Article
What is meant by skeletal chemical equation?
A skeletal chemical equation is a representation of a chemical reaction using chemical formulae of reactants and products. In the... View Article
Find the molar mass of calcium carbonate by calculation.
Answer: Molar mass is defined as the mass of substance for a given amount. The amount of molecules or atoms... View Article
Burning of a candle is a chemical change whereas the melting of a candle is a physical change. Why?
The phenomenon which burning of candle belongs to both physical and chemical change. When a candle burns, the oxygen in... View Article
Terrycot is made by mixing two types of fibres. What are those fibres?
Terrycot is prepared by mixing Terylene and cotton. TERYLENE, which is a polymer of 1. Ethylene Glycol 2. Terephthalic Acid.... View Article
Explain how petroleum refineries act as a ‘nodal industry’?
Petroleum is considered as the major energy source in India after coal. Petroleum refineries act as a nodal industry. The... View Article
Write the chemical formula of quick lime and slaked lime
Answer: The chemical formula of a compound is a symbolic representation of its chemical composition. Chemical formulae provide insight into... View Article
How to convert benzene into phenol?
When benzene undergoes chlorination in presence of sunlight, chlorobenzene is formed. Then the chlorobenzene is treated with aqueous solution NaOH,... View Article
What happens when sodium hydroxide reacts with sulphuric acid?
When sodium hydroxide react with sulphuric acid they form Sodium sulphate and water. The reactants involved in the process are... View Article
What is the decomposition of FeSO4?
FeSO4 when heated, it decomposes into ferric oxide, sulphur dioxide and sulphur trioxide. This reaction is an example for decomposition... View Article
Most acidic oxide among the following is? NO2, P2O5, Cl2O5, Cl2O.
Cl2O7 is most acidic because on reacting with water, it gives most strongest acid than the other three i.e., HClO4.... View Article
List names of acids present in fruits and vegetables
Name of Acids present in food, fruits and vegetables Acetic Acid Vinegar Benzoic acid Cranberries, Prunes and Plums Butyric acid... View Article
What is the oxidation no of all iodine atom in KI3?
Let assume oxidation number of l is x. In KI3, the oxidation number of K is +1. 1(+1) + 3(x)... View Article
