Consider the following reactions i)Cr_(2)O_(3)+2"Al"to Al_(2)O_(3)+2Cr+Heart ii) Al_(2)O_(3)+2CrtoCr_(2)O_(3)+2Al+Heart iii) 2Al+6NaOH to 2Na_(3)AlO_(3)+3H_(2)In this possible reactions are

Consider the following reactions i)Cr_(2)O_(3)+2"Al"to Al_(2)O_(3)+2Cr

1.	Consider the following reactions i)Cr_(2)O_(3)+2"Al"to Al_(2)O_(3)+2Cr+Heart ii) Al_(2)O_(3)+2CrtoCr_(2)O_(3)+2Al+Heart iii) 2Al+6NaOH to 2Na_(3)AlO_(3)+3H_(2)In this possible reactions are
Answer» I &III II&iii i&ii I,ii&iii Answer :1