Question

79
64. Give one use each of the following metals:
(a) Iron (b) Copper (c) Aluminium (d) Zinc (e) Mercury
65. State one use each of the following non-metals :
(a) Oxygen (b) Nitrogen (c) Sulphur (d) Chlorine (e) lodine
ng Answer Type Questions
66. (a) What are metals ? Name five metals.
(b) What are non-metals ? Name five non-metals.
67. (a) What are metalloids ? Name two metalloids.
(b) Classify the following elements into metals, non-metals and metalloids :
Copper, Sulphur, Aluminium, Oxygen, Silicon, Nitrogen, Germanium, Mercury, Chlorine, Sodium.
68. (a) What happens when sulphur dioxide is dissolved in water ? Write a word equation for the reaction
which takes place.
(b) What happens when an iron nail is placed in copper sulphate solution ? Write word equation of the
reaction involved.
69. (a) State five characteristics of metals and five characteristics of non-metals.
(b) State five uses of metals and five uses of non-metals.
70. Compare the chemical properties of metals and non-metals in tabular form.
Itiple Choice Questions (MCQS)
71. An element is soft and can be cut easily with a knife. It is very reactive and cannot be kept open in the air.
1 luator This element is most likely to be :​

Answer 1

Explanation:

iron is used to making machinery and havy equipment

aluminium is used to make thin fols packing medicine chocolate and food items

zinc is used for galvansing iron