Hello Aspirants. Welcome to Online General Knowledge section in Affairs cloud, which is important for all the competitive exams. We have created Some questions related to General Science(Chemistry) !!!
- Which acid is responsible for the digestion ?
1.CH3COOH
2.HCl
3.HNO3
4.H2SO4
5.None of theseAnswer – 2.HCl
Explanation :
Hydrochloric acid, also called HCl, is a clear, highly corrosive liquid. HCl is one of the many chemicals released in our stomach when we eat a meal. The role of hydrochloric acid in the stomach, along with the other gastric juices, is to break down foods and cause the release of enzymes that further aid digestion. - Sulphuric acid is also known as ……………………..
1.Oil of Vitriol
2.Blue Vitriol
3.Water Vitriol
4.Acid Vitriol
5.None of theseAnswer – 1.Oil of Vitriol
Explanation :
Later, in 18th century Europe, there were two processes in use by which sulfuric acid was made. One was by distilling green vitriol (ferrous sulfate) and collecting the acid vapors evolved, a method which gave the acid its early name ‘oil of vitriol. – Highly concentrated sulfuric acid has an oily appearance. - ……………………..is used in vinegar, medicines and as a solvent
1.Sulphuric Acid
2.Nitric Acid
3.Hydrochloric Acid
4.Acetic Acid
5.None of theseAnswer – 4.Acetic Acid
Explanation :
Acetic acid(CH3COOH) named as ethanoic acid is an organic compound with the chemical formula CH₃COOH. It is a colourless liquid that when undiluted is also called glacial acetic acid. - What is the chemical name of Lime ?
1.Calcium Nitrate
2.Calcium Carbonate
3.Calcium Oxide
4.Calcium Sulphate
5.None of theseAnswer – 3.Calcium Oxide
Explanation :
Calcium oxide, commonly known as quicklime or burnt lime, is a widely used chemical compound. It is a white, caustic, alkaline, crystalline solid at room temperature. - Sodium Hydrogen Carbonate is the chemical name of ………………………….
1.Baking Soda
2.Washing Soda
3.Bleaching Powder
4.Common Salt
5.None of theseAnswer – 1.Baking Soda
Explanation :
Sodium bicarbonate is a chemical compound with the formula NaHCO₃. It is a salt composed of sodium ions and bicarbonate ions. Sodium bicarbonate is a white solid that is crystalline but often appears as a fine powder. - Which of the following is also known as Common Salt ?
1.Na2CO3
2.NaCl
3.NaHCO3
4.Na2So4
5.None of theseAnswer – 2.NaCl
Explanation :
Sodium chloride also known as salt or halite, is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ion - If pH value of the solution is 7 then the solution is ……………………….
1.Acidic Solution
2.Basic Solution
3.Neutral Solution
4.All of these
5.None of theseAnswer – 3.Neutral Solution
Explanation :
Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are basic. Pure water is neutral, being neither an acid nor a base - The Solution of pH value is ……………………………. then it is called as Basic solution
1.Equal to 7
2.Greater than 7
3.Lesser than 7
4.Equal to 1
5.None of theseAnswer – 2.Greater than 7
Explanation :
Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are basic. Pure water is neutral, being neither an acid nor a base. - Blue Vitriol is used to test the presence of water.Blue Vitriol is
1.Calcium Oxide
2.Sulphuric Acid
3.Sodium Oxide
4.Copper Sulphate
5.None of theseAnswer – 4.Copper Sulphate
Explanation :
Copper sulfate, also known as cupric sulfate or copper sulphate, is the inorganic compound with the chemical formula CuSO4. Other names for copper(II) sulfate are “blue vitriol” and “bluestone”. - In acidic solution the pH value should be ………………………..
1.Equal to 7
2.Greater than 7
3.Lesser than 7
4.Equal to 1
5.None of these
5.None of theseAnswer – 3.Lesser than 7
Explanation :
Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are basic. Pure water is neutral, being neither an acid nor a base
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