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What is the concept of decomposition and combination reaction in the NCERT Solutions for Class 10 Science Chapter 1?

What is the concept of decomposition and combination reaction in the NCERT Solutions for Class 10 Science Chapter 1?

What is the concept of decomposition and combination reaction in the NCERT Solutions for Class 10 Science Chapter 1? The reaction between two or more molecules to form a larger molecule is called a combination reaction whereas the splitting up of larger molecules into two or more smaller molecules is called the decomposition reaction.

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Why does the colour of copper sulphate solution change when an iron nail is dipped in it?

Why does the colour of copper sulphate solution change when an iron nail is dipped in it?

Why does the colour of copper sulphate solution change when an iron nail is dipped in it? Solution: When an iron nail dipped in the copper sulphate solution, iron displaces copper from the copper sulphate because iron is more reactive than copper. Therefore the colour of the copper sulphate solution changes. The reaction is: Fe + CuSO4 → FeSO4 + Cu

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Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gas

Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gas

Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gas Solution: In activity 1.7, gas collected in one of the test tubes is double of the amount collected in the other because water gets hydrolysed to release H2 and O2 gas. Here, after electrolysis two molecules of Hydrogen and one molecule of oxygen gas is released,…

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A solution of a substance ‘X’ is used for whitewashing. (i) Name the substance ‘X’ and write its formula. (ii) Write the reaction of the substance ‘X’ named in (i) above with water.

A solution of a substance ‘X’ is used for whitewashing. (i) Name the substance ‘X’ and write its formula. (ii) Write the reaction of the substance ‘X’ named in (i) above with water.

A solution of a substance ‘X’ is used for whitewashing. (i) Name the substance ‘X’ and write its formula. (ii) Write the reaction of the substance ‘X’ named in (i) above with water. Solution: i) The substance ‘X’ which is used in whitewashing is quick lime or Calcium Oxide and its formula is CaO. ii) CaO + H2O → Ca(OH)2

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Write a balanced chemical equation with state symbols for the following reactions i) Solutions of Barium chloride and Sodium sulphate in water react to give insoluble Barium sulphate and solution of Sodium chloride. ii) Sodium hydroxide solution in water reacts with hydrochloric acid solution to produce Sodium chloride solution and water.

Write a balanced chemical equation with state symbols for the following reactions i) Solutions of Barium chloride and Sodium sulphate in water react to give insoluble Barium sulphate and solution of Sodium chloride. ii) Sodium hydroxide solution in water reacts with hydrochloric acid solution to produce Sodium chloride solution and water.

Write a balanced chemical equation with state symbols for the following reactions i) Solutions of Barium chloride and Sodium sulphate in water react to give insoluble Barium sulphate and solution of Sodium chloride. ii) Sodium hydroxide solution in water reacts with hydrochloric acid solution to produce Sodium chloride solution and water. Solution: i) BaCl2 + Na2SO4 → BaSO4 + 2NaCl ii) NaOH + HCl…

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Write a balanced equation for the following chemical reactions. i) Hydrogen + Chloride —-> Hydrogen chloride ii) Barium chloride + Aluminium sulphate —-> Barium sulphate + Aluminium chloride iii) Sodium + Water —-> Sodium hydroxide + Hydrogen

Write a balanced equation for the following chemical reactions. i) Hydrogen + Chloride —-> Hydrogen chloride ii) Barium chloride + Aluminium sulphate —-> Barium sulphate + Aluminium chloride iii) Sodium + Water —-> Sodium hydroxide + Hydrogen

Write a balanced equation for the following chemical reactions. i) Hydrogen + Chloride —-> Hydrogen chloride ii) Barium chloride + Aluminium sulphate —-> Barium sulphate + Aluminium chloride iii) Sodium + Water —-> Sodium hydroxide + Hydrogen Solution: i) H2 + Cl2 → 2HCl ii) 3BaCl2 + Al2(SO4)3 →3BaSO4 + 2AlCl3  iii) 2Na + 2H2O → 2NaOH + H2  

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Why should a magnesium ribbon be cleaned before burning in air?

Why should a magnesium ribbon be cleaned before burning in air?

Why should a magnesium ribbon be cleaned before burning in air? Solution: Magnesium ribbon should be cleaned before burning in air because Magnesium metal reacts with the atmospheric oxygen and forms Magnesium Oxide (MgO) layer which is a very stable compound. In order to prevent further reactions with Oxygen, it is therefore necessary to clean the ribbon by to remove the layer of MgO.  

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Plant Growth Regulators- Science Project

Plant Growth Regulators- Science Project

Plant Growth Regulators The plant growth regulators (PGR) are small and simple molecules but have diverse chemical compositions. They are also called plant hormones or phytohormones.Plant Growth Regulators are divided into two major groups – plant growth promoters, e.g. – auxins, gibberellins and cytokinins and plant growth inhibitors e.g. – abscisic acid. Let us do a simple experiment to…

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CBSE Science Projects for Class 10

CBSE Science Projects for Class 10

CBSE Science projects pertaining to the Science discipline are an educational activity conducted for students, and it involves creating Scientific models and conducting various experiments. It is even termed as CBSE Science Fair Project. CBSE Class 10 Science Projects are divided into four types, namely theoretical projects, experimental projects, display projects and engineering projects. In…

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What creates owners equity?

What creates owners equity?

What creates owners equity? Owner’s Equity is defined as the proportion of the total value of a company’s assets that can be claimed by its owners (sole proprietorship or partnership. … It is calculated by deducting all liabilities from the total value of an asset (Equity = Assets – Liabilities).

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What are examples of equity accounts?

What are examples of equity accounts?

What are examples of equity accounts? These accounts include common stock, preferred stock, contributed surplus, additional paid-in capital, retained earnings, other comprehensive earnings, and treasury stock. Equity is the amount funded by the owners or shareholders of a company for the initial start-up and continuous operation of a business.

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What are the three major types of equity accounts?

What are the three major types of equity accounts?

Equity accounts include common stock, paid-in capital, and retained earnings.

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Can you have equity without equality?

Can you have equity without equality?

There is a common misconception that equity and equality mean the same thing — and that they can be used interchangeably, especially when talking about education. But the truth is they do not — and cannot.

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Why is it important to know the difference between equality and equity?

Why is it important to know the difference between equality and equity?

Equity, as we have seen, involves trying to understand and give people what they need to enjoy full, healthy lives. Equality, in contrast, aims to ensure that everyone gets the same things in order to enjoy full, healthy lives.

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What are examples of equity and equality?

What are examples of equity and equality?

Example of workplace equity: Difference in salary, benefits and rewards to the employees as per their work performance, expertise and specialty. Example of workplace equality: Same salary, benefits and rewards to all the employees irrespective of the difference in their work performance

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What is the difference between equality and equity with examples?

What is the difference between equality and equity with examples?

Equality means each individual or group of people is given the same resources or opportunities. Equity recognizes that each person has different circumstances and allocates the exact resources and opportunities needed to reach an equal outcome.

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NCERT Solutions for Class 11 Economics Chapter 8 – Index Numbers

NCERT Solutions for Class 11 Economics Chapter 8 – Index Numbers

Question 1: An index number which accounts for the relative importance of the items is known as (i) weighted index (ii) simple aggregative index (iii) simple average of relatives Answer: An index number which accounts for the relative importance of the items is known as weighted index An index number in which different items of the series are accorded weight age according to their relative…

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