CLASS 7 SCIENCE : Acid, Basic and Nuetrals
CLASS
7
SCIENCE
Chapter
: 2
Acid,
Basic and Nuetrals
Elements
and their Symbol
तत्व और उनके प्रतीक
|
Sr/क्र |
Element / तत्व
|
Symbol/प्रतीक
|
|
1. |
Hydrogen |
H |
|
2. |
Oxygen |
O |
|
3. |
Sodium |
Na |
|
4. |
Magnesium |
Mg |
|
5. |
Nitrogen |
N |
|
6. |
Chlorine |
CI |
|
7. |
Potassium |
K |
|
8. |
Zinc |
Ζn |
|
9. |
Aluminium |
AI |
|
10. |
Calcium |
Ca |
2. Acids found in substances
पदार्थ
में पाये जाने वाला अम्ल
|
Sr/क्र |
Substance
/ पदार्थ |
Acids
/ अम्ल |
|
1. |
Vinegar |
Acetic Acid |
|
2. |
Orange |
Citric Acid |
|
3. |
Lemon |
Citric Acid |
|
4. |
Spinach |
Oxalic Acid |
|
5. |
Curd |
Lactic Acid |
|
6. |
Amla |
Ascorbic Acid |
|
7. |
Milk |
Lactic Acid |
|
8. |
Ant Sting |
Formic Acid |
|
9. |
Coffee |
Caffeotonic Acid |
|
10. |
Grapes |
Tartaric Acid |
|
11. |
Tamarind |
Tartaric Acid |
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