How many of the following statements is/are correct? a) Mercury is the only metal that exists as liquid at…

How many of the following statements is/are correct?
a) Mercury is the only metal that exists as liquid at room temperature.
b) Among non-metals, carbon has the highest melting point.
c) Hydrogen is the most abundant element in the universe.
d) Oxygen is the most abundant element in the earth's crust.
  1. 1
  2. 2
  3. 3
  4. 4

Solution

a) Mercury is the only metal that exists as liquid at room temperature. It is correct statement because it is a liquid metal.
b) Among non-metals, carbon has the highest melting point because diamond is the allotrope of carbon which is very hard in nature and has high melting point.
c) Hydrogen is the most abundant element in the universe because it's 75% part if formed by the Big Bang.
d) Oxygen is the most abundant element in the earth's crust because it found in the form of oxide, superoxide and oxysalts. It is found around the 46.6 % of earth crust.

Hence, all the four given statements are correct.

Asked in: AP EAMCET 2021 (20 Aug Shift 2)

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