[" 28.Thermite is a mixture of "],[[" a) "Cr_(2)O_(3)+Al_(2)O_(3)," b) "Fe_(2)O_(3)+Al],[" c) "Fe_(2)O_(3)+Al_(2)O_(3)," d) "Al_(2)O_(3)+2Cr]]

What is the nature of Al_(2)O_(3) and B_(2)O_(3) ?

What is the nature of Al_(2)O_(3) and B_(2)O_(3) ?

Exothermic reaction among the following is A) Cr_(2) O_(3) + 2All to 2 Cr + Al_(2) O_(3) B) Fe_(2) O_(3) + 2Al to 2 Fe + Al_(2) O_(3) C) 3 Mn_(3) O_(4) + 8 Al to 4 Al_(2) O_(3) + 9 Mn

A mixture of Al_(2)O_(3) and Fe_(2)O_(3) can be separated by using

Which is used to separate Al_(2)O_(3) and Fe_(2)O_(3)

A mixture of Al_(2) O_(3) and Fe_(2) O_(3) can be separa-ted by using

How many compounds show amphoteric nature amongst following B_(2)O_(3),TI_(2)O_(3),Al(OH)_(3),Ga(OH)_(3),Al_(2)O_(3),Ga_(2)O_(3),NaAlO_(2),Sr(OH)_(2),Cr_(2)O_(3)

How many compounds show amphoteric nature amongst following B_(2)O_(3),TI_(2)O_(3),Al(OH)_(3),Ga(OH)_(3),Al_(2)O_(3),Ga_(2)O_(3),NaAlO_(2),Sr(OH)_(2),Cr_(2)O_(3)

Fe_(2)O_(3(s))+2Al_((s))rarr 2Fe_((s))+Al_(2)O_(3(s)) is a/an …………….