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There are four metals K, L, M and N. Identify them by using the hints given below.
K forms basic oxide.

L forms amphoteric oxide.

Oxide of M dissolves in water to form alkali. N does not react with water at all.

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\to

K, L

\to

Cu, M

\to

Pb, N

\to

\to

Cu, L

\to

Zn, M

\to

K, N

\to

\to

Fe, L

\to

Na, M

\to

K, N

\to

\to

Zn, L

\to

Al, M

\to

Na, N

\to

answer is D.

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Detailed Solution

K-forms basic oxide – means metal oxide – Cu

L-forms amphoteric oxide – Zn because ZnO can react with both acids and bases.

M-form alkali – K

N-does not react with water – Pb. Lead doesn't react with cold water.

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