Drag and drop: NCERT- Previous year one mark questions - I

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Answer the following questions:

Answer variants:

Detergent

In a chemical change, new substance is formed.

Hydrogen is more reactive than hydrogen, displaces hydrogen from water. \(2Na\)(s) + \(H_2O\)(l) → \(2NaOH\)(aq) + \(H_2\)l(g)

The solution will become blue, shiny silver metal will get deposited.

1. What can be seen when a strip of copper metal is placed in a solution of silver nitrate?

2. State one basic difference between a physical change and a chemical change.

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34. Drag and drop: NCERT- Previous year one mark questions - I