SCIENCE AND TECHNOLOGY

STANDARD TEN
PART I & II
CHAPTER : 2
Chemical Reactions and Equations

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SCIENCE AND TECHNOLOGY – Chapter 2

Chemical Reactions and Equations

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The chemical reaction between Hydrogen sulphide and iodine to give Hydrogen iodide and sulphur is given below:

The reducing and oxidizing agents involved in this redox reaction are:

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The neutralization reaction between an acid and a base is a type of:

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The displacement reaction between iron (III) oxide and a metal X is used for welding the rail tracks. Here X is:

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Following is given a diagram showing an experimental set-up:

 

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Which of the following gases is used in the storage of fat and oil containing foods for a long time?

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When ferrous sulphate is heated strongly it undergoes decomposition to form ferric oxide as a main product accompanied by a change in colour from:

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You are given the following chemical reaction:

 

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Rusting of iron involves a chemical reaction which is a combination of:

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All the methods mentioned below can be used to prevent the food from getting rancid except:
i. Storing the food in the air-tight containers
ii. Storing the food in refrigerator
iii. Keeping the food in clean and covered containers
iv. Always touching the food with clean hands

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It is necessary to balance a chemical equation in order to satisfy the law of:

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One of the following processes does not involve a chemical reaction. That is:

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A chemical reaction does not involve:

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The respiration process during which glucose undergoes slow combustion by combining with oxygen in the cells of our body to produce energy, is a kind of:

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In a chemical reaction between sulphuric acid and barium chloride solution the white precipitates formed are of:

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Before burning in air, the magnesium ribbon is cleaned by rubbing with a sand paper to:

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