Periodic Table Orbitals. We covered all the Periodic Table Orbitals in this post for free so that you can practice well for the exam.
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MCQ on Periodic Table Orbitals
Which one of the following elements exists in a liquid state at room temperature?
(a) Mercury
(b) Lead
(c) Sodium
(d) Calcium
Option a – Mercury
The metal constituent of chlorophyll is
(a) Iron
(b) Potassium
(c) Manganese
(d) Magnesium
Option d – Magnesium
Which one among the following does not have an allotrope?
(a) Oxygen
(b) Sulphur
(c) Nitrogen
(d) Carbon
Option c – Nitrogen
Silicon is used in
(b) semiconductors
(c) transistors
(d) All of these
Option d – All of these
Which one of the following is the correct sequence of the given elements in the increasing order of their reactivity?
(a) Iodine-Bromine-Chlorine-Fluorine
(b) Bromine-Iodine-Chlorine-Fluorine
(c) Bromine-Iodine-Fluorine-Chlorine
(d) Iodine-Bromine-Fluorine-Chlorine
Option a – Iodine-Bromine-Chlorine-Fluorine
Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?
(a) Hydrogen, oxygen, sodium
(b) Carbon, hydrogen, nitrogen
(c) Oxygen, calcium, phosphorus
(d) Carbon, hydrogen, potassium
Option b – Carbon, hydrogen, nitrogen
What are the elements which are liquids at room temperature and standard pressure? 1. Helium 2. Mercury 3. Chlorine 4. Bromine Select the correct answer using the codes given below :
(a) 2 and 3 only
(b) 2, 3 and 4
(c) 2 and 4 only
(d) 1 and 3 only
Option c – 2 and 4 only
Consider the following statements and select the correct code. Assertion (A): In the periodic table of chemical elements, electron affinity is always found to increase from top to bottom in a group Reason (R): In a group, the atomic radii generally increase from top to bottom.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true and R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
Option d – A is false but R is true
The nuclear fuel in the sun is
(a) helium
(b) hydrogen
(c) uranium
(d) alpha particles
Option a – helium
Which one of the following elements are used in the manufacture of safety matches?
(a) Graphite
(b) Phosphorus
(c) Silicon
(d) Sodium
Option b – Phosphorus
The halogen being used as analgesic is
(a) chlorine
(b) bromine
(c) iodine
(d) fluorine
Option b – bromine
Which is the rarest naturally occurring element on earth?
(a) Gold
(b) Antimony
(c) Germanium
(d) Astatine
Option d – Astatine
The deficiency of which one of the following leads to dental caries?
(a) Iron
(b) Copper
(c) Fluorine
(d) Zinc
Option c – Fluorine
Which among the following elements (metals) pollutes the air of a city with a large number of automobiles?
(a) Cadmium
(b) Lead
(c) Chromium
(d) Nickel
Option b – Lead
Which among the following is an element?
(a) Alumina
(b) Brass
(c) Graphite
(d) Silica
Option c – Graphite
An atom of an element (X) has its K, L, and M shells filled with some electrons. It reacts with sodium metal to form the compound NaX. The number of electrons in the M shell of the atom (X) will be
(a) Eight
(b) Seven
(c) Two
(d) One
Option b – Seven
The ‘d’ block elements in the Periodic Table form alloys among themselves because
(a) their atomic sizes are nearly the same
(b) they have unpaired electrons
(c) their ionization potentials are similar
(d) they are all metals
Option b – they have unpaired electrons
Which of the following is the most common element in the universe?
(a) Hydrogen
(b) Oxygen
(c) Nitrogen
(d) Carbon
Option a – Hydrogen
Which one of the following is used as a moderator in the nuclear reactor?
(a) Thorium
(b) Graphite
(c) Radium
(d) Ordinary water
Option b – Graphite
Element A belongs to Group VII in the p-block and element B belongs to Group I in the s-block of the periodic table. Out of the following assumptions, the correct one is :
(a) A and B are metals
(b) A and B are non-metals
(c) A is a metal and B is a non-metal
(d) A is a non-metal and B is a metal
Option d – A is a non-metal and B is a metal
Which period in the periodic table has both ‘s’ and ‘p’ block elements?
(a) 2nd period
(b) 1st period
(c) 3rd period
(d) Both (a) and (c)
Option d – Both (a) and (c)
We covered all the periodic table orbitals above in this post for free so that you can practice well for the exam.
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