PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
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1. Nalini observed that an iron gate near her house has turned reddish-brown. This is due to and it is a change.
2. The process in which iron slowly reacts with oxygen and moisture to form a reddish-brown substance is called , and it is a change.
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