-a- Give an example for a combination reaction which is exothermic- -b- Identify the oxidising agent- reducing agent in the following reaction- H2 S iuml- -128- plusmn-Cl2 iuml- -130- 2 HCl iuml- -128- plusmn-S -c- Name the phenomenon due to which the taste and smell of oily food changes when kept for a long time in open- Suggest one method to prevent it-

A. Burning of coalC+O2– #62; CO2 nbsp;B. nbsp;Oxidizing agent: Cl2Reducing agent: H2S nbsp;C.Rancidity. nbsp;Food can be stored in cold atmosphere i.e ...

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Standard X

Chemistry

Types of Chemical Reactions

(a) Give an e...

Question

(a) Give an example for a combination reaction which is exothermic. (b) Identify the oxidising agent, reducing agent in the following reaction. H2 Sï€±Cl2 ï‚ 2 HClï€±S (c) Name the phenomenon due to which the taste and smell of oily food changes when kept for a long time in open. Suggest one method to prevent it.

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Solution

a. Burning of coal
C+O2--> CO2

B.
Oxidizing agent: Cl2
Reducing agent: H2S

C.
Rancidity.
Food can be stored in cold atmosphere i.e. in refrigerators.
Food preservatives are used to preserve food.

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a. Burning of coalC+O2--> CO2 B. Oxidizing agent: Cl2Reducing agent: H2S C.Rancidity. Food can be stored in cold atmosphere i.e. in refrigerators. Food preservatives are used to preserve food.

a. Burning of coal
C+O2--> CO2

B.
Oxidizing agent: Cl2
Reducing agent: H2S

C.
Rancidity.
Food can be stored in cold atmosphere i.e. in refrigerators.
Food preservatives are used to preserve food.