Question

3MnO2 + 4Al → 3Mn + 2Al2O3 which is reducing and oxidizing...and give me the reason..​

Answer 1

Step-by-step explanation:

mno2 is reduced and al is oxidised. here,

3mno2 gives 3mn ( decrease in oxidation number from +4 to 0)

and , 4Al gives 2Al2O3 ( increase in oxidation number from 0 to 9/2).

Answer 2

Answer:

Rabi crops are sown at the end of monsoon or the beginning of winter. They are also known as winter crops. Example :- wheat, gram, pea, mustard and linseed.

Kharif crops are sown at the beginning of the rainy season and are also known as monsoon crops. Example: maize, sugar cane, soyabean, paddy and cotton.

Step-by-step explanation:

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