Amphoteric Oxides of Metals

Q. Metal oxides, which react with both acids and bases, are called ________.

1. basic oxides
2. neutral oxides
3. acidic oxides
4. amphoteric oxides

Q.

Metal oxides which react with both acids and bases to produce salt and water are known as amphoteric oxides.

1. False
2. True

Q. Statement 1: Metal oxides are also called basic oxides.
Statement 2: Metal oxides neutralize the effect of acids and release water, similar to the reaction of a base with an acid.

1. Statement 1 and statement 2 are correct, but statement 2 is not the correct explanation for statement 1
2. Statement 1 is correct, but statement 2 is incorrect
3. Both statements are correct and statement 2 is the correct explanation for statement 1
4. Statement 1 is incorrect, but statement 2 is correct

Q.

Choose the most appropriate answer from the following list of oxides that fit the description.

$({\mathrm{SiO}}_2,{\mathrm{SO}}_2,{\mathrm{Al}}_2{\mathrm{O}}_3,\mathrm{MgO},\mathrm{CO},{\mathrm{Na}}_2\mathrm{O})$

An amphoteric oxide.

Q. Metal oxides which react with both acids and bases to produce salt and water are known as:

1. amphoteric oxides
2. non-metals
3. basic oxides
4. acidic oxides

Q. Write chemical equation for the reaction taking place in the flask. Write name and one property of the gas evolved.

Q. Aluminium vessels should not be washed with materials containing washing soda because:

1. Washing soda is expensive
2. Washing soda is easily decomposed
3. Washing soda reacts with aluminium because the latter is amphoteric.
4. Washing soda reacts with aluminium to form insoluble aluminium oxide

Q. When zinc reacts with dilute $NaOH,$ the products formed are:

1. $H_2+Zn(OH{)}_2+Na$
2. $H_2+N{a}_{2}Zn{O}_2$
3. $NaOH+H_2+ZnO$
4. $H_2+ZnO+Na$

Q.

Metal oxides which react with both, acids as well as bases, to produce salt and water are known as ___ oxides.