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Metals form basic oxides or amphoteric o...

Metals form basic oxides or amphoteric oxides.

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p-block elements form acidic, basic and amphoteric oxides. Explanin each property by giving two examples, and also write the reactions of these oxides with water.

Knowledge Check

  • Amphoteric oxide is

    A
    CuO
    B
    `Na_(2)O`
    C
    `K_(2)O`
    D
    `Al_(2)O_(3)`

  • 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.

    A
    `K to Zn, L to Al, M to Na, N to Fe `
    B
    `K to Fe, L to Na, M to K, N to Zn`
    C
    `K to K, L to Cu, M to Pb, N to Na`
    D
    `K to Cu, L to Zn, M to K, M to Pb`

  • There are four metals P, Q, R and S. Identify them by using the hints given below. P forms basic oxide. Q forms amphoteric oxide. Oxide of R dissolves in water to form alkali. S does not react with water at all.

    A
    `P to Fe, Q to Na, R to K, S to Zn`
    B
    `P to Zn, Z to Al, R to Na, S to Fe`
    C
    `P to Cu, Q to Zn, R to K, S to Pb`
    D
    `P to K, Q to Cu, R to Pb, S to Na `

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