Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AP EAMCET202120 Aug 2021Evening ShiftChemistryClassification of Elements and Periodicity in PropertiesActual

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.

Options

  1. A1
  2. B2
  3. C3
  4. D4

Correct answer

D. 4

Step-by-step 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

Practice Classification of Elements and Periodicity in Properties on Quantrex Academy →

More from Classification of Elements and Periodicity in Properties

Which of the following is an INCORRECT match? 2026Match List-I with List-II: List-I (Element-Atomic number) List-II (Position in periodic table) (a) Ra – 88 (i) 4^ th period, 13^ th group (b) Ga – 31 (ii) 6^ th period, 6^ th group 2026Which element from following has positive electron gain enthalpy? 2026Which of the following elements belongs to group 2 and sixth period of periodic table? 2026Identify the most electronegative element by the following. 2026Identify increasing order of acidity for following diprotic acids in aqueous solutions. 2026Identify the group of periodic table that contains element Astatine. 2026What happens to the size of atoms in p-block elements when we move from left to right in the same period? 2026 Full Classification of Elements and Periodicity in Properties list All AP EAMCET PYQs