JEE MAIN - Chemistry (2005 - No. 57)
Which of the following oxides is amphoteric in character?
CaO
CO2
SiO2
SnO2
Explanation
These elements are called amphoteric which reacts with both acid and base.
Following elements are amphoteric
$$\left( 1 \right)\,\,\,\,Zn$$
$$\left( 2 \right)\,\,\,\,Be$$
$$\left( 3 \right)\,\,\,\,Al$$
$$\left( 4 \right)\,\,\,\,B$$
$$\left( 5 \right)\,\,\,\,Cr$$
$$\left( 6 \right)\,\,\,\,Ga$$
$$\left( 7 \right)\,\,\,\,Pb$$
$$\left( 8 \right)\,\,\,\,Sn$$
Here $$Zn,Be,Al,Pb\,\,\,$$ and $$\,$$ $$Sn$$ are mostly amphoteric.
$$B, Cr$$ and $$Ga$$ are less amphoteric.
Following elements are amphoteric
$$\left( 1 \right)\,\,\,\,Zn$$
$$\left( 2 \right)\,\,\,\,Be$$
$$\left( 3 \right)\,\,\,\,Al$$
$$\left( 4 \right)\,\,\,\,B$$
$$\left( 5 \right)\,\,\,\,Cr$$
$$\left( 6 \right)\,\,\,\,Ga$$
$$\left( 7 \right)\,\,\,\,Pb$$
$$\left( 8 \right)\,\,\,\,Sn$$
Here $$Zn,Be,Al,Pb\,\,\,$$ and $$\,$$ $$Sn$$ are mostly amphoteric.
$$B, Cr$$ and $$Ga$$ are less amphoteric.
Comments (0)
