I. Metals are generally ductile and metal W is the most ductile metal. |
II. Metals generally possess high melting points but few metals like X have low melting point. |
III. Metals are good conductors of electricity but metal Y is very poor conductor of electricity. |
IV. Among metals, Z is the poorest conductor of heat. |
A) Aluminium, sodium, lead and silver
B) Gold, potassium, mercury and lead
C) Copper, zinc, silver and mercury
D) Iron, sodium, gold and lead.
Correct Answer: B
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