Which two metals react with concentrated alkalis?

A l, M g

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A l, Z n

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N a, K

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K, A l

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Solution

The correct option is A $A l, Z n$
Groups IIA, IIIA, and IVA metals are less reactive than the neighboring alkali metals.Thus $A l$ and $Z n$ are less reactive metals than $N a, K$ and $M g$ .

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Q. How many elements from the following can react with hydrochloric acid?
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Considering the elements B, Al, Mg, and K, the correct order of their metallic character is:
(a) B > Al > Mg > K
(b) Al > Mg > B > K
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(d) K > Mg > Al > B

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Which metal will displace hydrogen from acids but not water?

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Which two metals react with concentrated alkalis?

The correct option is A Al,ZnGroups IIA, IIIA, and IVA metals are less reactive than the neighboring alkali metals.Thus Al and Zn are less reactive metals than Na, K and Mg.

The correct option is A $A l, Z n$
Groups IIA, IIIA, and IVA metals are less reactive than the neighboring alkali metals.Thus $A l$ and $Z n$ are less reactive metals than $N a, K$ and $M g$ .