Metals & Non-metals

Metals and Non-Metals Worksheet-7

1. The oxides of nonmetal which is neutral is:

(a) SO₂               (b) NO₂              (c) P₂O₃              (d) CO

2. Phosphorus combine with oxygen to form how many types of oxides?

(a) three             (b) two               (c) one                (d) four

Metals and Non-Metals Worksheet-8

1. Which of the following is called as noble metal?

(a) Mercury      (b) Gold             (c) Lithium        (d) Cesium

2. Haematite is an ore of:

(a) Fe                  (b) Zn                 (c) Cu                 (d) Al

3. Fe₃O₄ is the chemical formula of:

(a) monazite     (b) magnetite    (c) haematite    (d) bauxite

Metals and Non-Metals Worksheet-9

1. The alloy in which copper is a component is:

(a) bronze          (b) steel              (c) solder           (d) nichrome

2. Copper and tin are components of:

(a) brass            (b) invar             (c) bell metal    (d) alnico

3. Chemical formula of bauxite is:

(a) Al₂O₃.2H₂O                            (b) Al₂SiO₂.2H₂O