Question

Choose the most appropriate answer.
1. Which of the following is true for all metals?
a. They are hard solids,
b. They have high melting and boiling points
e. They have 1-3 valence electrons. d. They are malleable and ductile.
2. Gold normally occurs in nature
a in free state, b. as carbonate ore, c. as sulphate ore.
d. as sulphide ore.
3. Which of these is the most reactive metal?
a, magnesium
c. platinum
d. sodium
4. Which of these metals cannot displace hydrogen from a dilute acid?
a, iron
b. zinc
d. calcium
5. Which one of the following alloys is light and strong?
a. brass
b. stainless steel c. duralium
d. bronze
6. Which of these metals can displace all the other three metals from their salt solutions?
b. iron
c. silver
d. zinc
b. gold
c. silver
a. copper
al
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Answer 1

Answer:

1. (d) They are malleable and ductile.

2. (a) In free state.

3. (c) Platinum.

4. (b) Zinc.

5. (b) Brass.

6. (a) Copper.

Explanation:

Hope it helps.