Metals & Non-metals

Metals and Non-Metals Worksheet-10

1. Metals react with water to form oxides or hydroxides and release ______ gas.

(a) hydrogen                                  (b) oxygen

(c) carbon dioxide                        (d) carbon monoxide

2. Metal which does not react even with steam:

(a) potassium   (b) iron               (c) magnesium (d) silver

Metals and Non-Metals Worksheet-11

1. Gold is mixed with copper to:

(a) make gold soft                        (b) make gold hard

(c) make gold more yellowish   (d) give gold luster

2. A thin layer of tin or chromium can be deposited over iron or steel objects by:

(a) electroplating                          (b) galvanization

(c) electrolysis                               (d) all of these

Metals and Non-Metals Worksheet-12

1. In the figure, X and Y respectively are

(a) Zn and ZnSO₄                         (b) ZnSO₄ and Zn     

(c) Zn and CuSO₄                         (d) Zn and Cu

2. Match both the columns and select the correct option from the codes given below.

(a) (A)-(II), (B)-(III), (C)-(I), (D)-(IV)