Question

With the help of following reactions, arrange
metals A, B, D and E in decreasing order of their
reactivity :-
(I) B+ ANO, — → B NO, + A
1
(II) A + HCI- ACI+ 3H,
H
(III) D+ ECI > DCI + E
(IV) D+ HNO -> H, gas is not evolved
(1) B > D >> E>A (2) B > A > D > E
(3) E >D>B> A (4) None of these
>​

Answer 1

Answer:

I can't understand this question you should snack this and resend it

Explanation:

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Answer 2

Answer:

The answer is B>A>D>E

Explanation:

(i) B+ ANO₃ -----> BNO₃ + A

It means B is more reactive than A ⇒B>A

(ii) A + HCl -------> ACl + 1/2H₂

A is more reactive than hydrogen ⇒ A>H

(iii) D + ECl --------> DCl + E

D is more reactive than E ⇒ D>E

(iV) D + HNO₃ -------> No reaction

D is less reactive than H⇒H>D

So order of reactivity B>A>D>E

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