MCQ
How to avoid wastage of food ?
- AWe should buy a lot of fruits and vegetables
- BWe should cooked extra food
- ✓Storage of food should be done properly
- DNone of these
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| S.No. | Items | Wood | Plastic | Metal | Glass |
| $(i)$ | Cooking | $\surd$ | $\surd$ | $\times$ | $\times$ |
| $(ii)$ | Storage container | $\surd$ | $\surd$ | $\surd$ | $\surd$ |
| $(iii)$ | $LPG$ cylinder | $\surd$ | $\surd$ | $\times$ | $\surd$ |
| $(iv)$ | Tea cup | $\surd$ | $\surd$ | $\surd$ | $\times$ |
|
S.No.
|
Changes
|
Type
|
|
$1.$
|
Sharpening of pencil.
|
Physical, reversible.
|
|
$2.$
|
Evaporation of water.
|
Physical, irreversible.
|
|
$3.$
|
Opening of a bud.
|
Chemical irreversible.
|
|
$4.$
|
Rusting of iron.
|
Chemical reversible.
|