Subject :NSO Class : Class 6
Class : Class 7
Galvanization is the process of applying a protective zinc coating to steel or iron surface, to protect it from rusting. The steel parts are submerged in a bath of molten zinc. While steel is immersed in zinc, a metallurgical reaction occurs between the iron in the steel and the molten zinc. So, this is a chemical process.
Subject :NSO Class : Class 6
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Subject :NSO Class : Class 7
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 6
Identify W, X, Y and Z.
W : An edible liquid miscible in water
X : A non-edible, inflammable liquid that floats on water
Y : An edible, coloured liquid that does not flow easily
Z : A colourless, non-inflammable liquid
| W | X | Y | Z | |
| A | Lemonade | Coconut oil | Milk | Petrol |
| B | Vinegar | Kerosene | Honey | Water |
| C | Coconut oil | Kerosene | Honey | Milk |
| D | Sunflower oil | Mustard oil | Milk | Kerosene |
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Subject :NSO Class : Class 7
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Subject :NSO Class : Class 7
Consider the following statements and select the correct option which correctly identifies true (T) and false (F).
(i) Iron loses its magnetism easily.
(ii) Steel is a hard magnetic material.
(iii) Iron is used to make permanent magnet.
(iv) Steel is used to make electromagnet.
| (i) | (ii) | (iii) | (iv) | |
| A | F | F | T | T |
| B | T | T | F | F |
| C | T | F | T | F |
| D | F | T | F | T |
3 statement should be true
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Subject :NSO Class : Class 9
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Subject :NSO Class : Class 3
Select the option which correctly fills the boxes X and Y of the given flow chart.
| X | Y | |
| A | Balsam | Wheat |
| B | Mustard | Onion |
| C | Turnip | Hibiscus |
| D | Grass | Rice |
C
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Subject :NSO Class : Class 4