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Amphoteric Metals

35. Among the...

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35. Among the following amphoteric oxide is (1) CO (2) Bi2O3 (3) PbO (4) CO2

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Q. Which one of the following is an amphoteric oxide?

B_{2} O_{3}, A l_{2} O_{3}

Q. In the given oxides how many oxides are amphoteric?

C O, C O_{2}, N a_{2} O, P b O_{2}, P b O, S n O, G e O_{2}, G e O

Q. (a) Classify following oxides as neutral, acidic, basic or amphoteric:

C O, B_{2} O_{3}, S i O_{2}, C O_{2}, A l_{2} O_{3}, P b O_{2}, T l_{2} O_{3}

(b) Write suitable chemical equations to show their nature.

Q. Find the number of amphoteric oxide(s) from the following

N i O, A l_{2} O_{3}, B_{2} O_{3}, P b O_{2}, Z n O, M g O

Q. Select from the following list: [4 MARKS]

F e_{2} O_{3}, N O, S O_{3}, P b O, M n_{2} O_{7}

(a) Basic oxide ......
(b) Amphoteric oxide ......
(c) Acidic oxide ......
(d) Neutral oxide .....

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