Question

10.1. Name the gas that can be used for the storage
of fresh sample of chips for a long time.
Q.2. How does the food become rancid?
(CBSE 2010, 11)
Q.3. Why are antioxidants added to fatty foods?
Q.4. The bags of chips are mostly flushed with
(CBSE 2017)
nitrogen. Why?
Q.5. Write the chemical formula of rust.
Q.6. Which compound is reduced ?
H,S (8) + Cl, (g) → 2 HCl (g) + S (s)
Identify the substance oxidised and substance
reduced in the following reaction :
MnO, + 4HCI MnCl, + 2H,0 + Cl,
Q.8. Why do we paint iron articles?
Q.9. Define rancidity.

made by
Jitesh baisla​

Answer 1

HOLA MATE

Here's your answer....

Answer:

1). Nitrogen

2). The oils and fats present in the food when get reacted with oxygen, food get rancid.

3). Antioxidants are those substances which do not allow Oxygen to react. That's why antioxidants are added to fatty foods.

4). The bags of chips are flushed with Nitrogen so as to prevent rancidity.

5). Fe3 + O2 = Fe2O3

6). S (Sulphur) is reduced here.

7). Oxidised:-Cl

Reduced:-Mn

8). We paint iron articles so as to prevent Oxidation.

9). Rancidity:- Complete are incomplete oxidation of fats and oils when exposed to air is known as rancidity.

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