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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 for Students
Which of the following elements is in liquid form at room temperature?
(a) Mercury
(b) Lead
(c) Sodium
(d) Calcium
Option a – Mercury
Which metal is a key component of chlorophyll?
(a) Iron
(b) Potassium
(c) Manganese
(d) Magnesium
Option d – Magnesium
Which of the following elements does not display allotropy?
(a) Oxygen
(b) Sulphur
(c) Nitrogen
(d) Carbon
Option c – Nitrogen
Silicon is utilized in which of the following?
(b) Semiconductor devices
(c) Transistors
(d) All of these
Option d – All of these
Which option shows the correct ascending order of reactivity among these elements?
(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 SET of elements played a crucial role in the development of life on Earth?
(a) Hydrogen, Oxygen, Sodium
(b) Carbon, Hydrogen, Nitrogen
(c) Oxygen, Calcium, Phosphorus
(d) Carbon, Hydrogen, Potassium
Option b – Carbon, Hydrogen, Nitrogen
Which of the following elements exist as liquids under standard temperature and pressure? 1. Helium 2. Mercury 3. Chlorine 4. Bromine
(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
Examine the following statements: Assertion (A): In the Periodic Table, electron affinity increases from top to bottom in a group.
Reason (R): Atomic size generally increases down a group.
Choose the correct explanation:
(a) Both A and R are true, and R explains A
(b) Both A and R are true, but R does not explain 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
What is the primary fuel driving the sun’s nuclear fusion?
(a) Helium
(b) Hydrogen
(c) Uranium
(d) Alpha particles
Option a – Helium
Which element is commonly used in the production of safety matches?
(a) Graphite
(b) Phosphorus
(c) Silicon
(d) Sodium
Option b – Phosphorus
Which halogen is known for its pain-relieving properties?
(a) Chlorine
(b) Bromine
(c) Iodine
(d) Fluorine
Option b – Bromine
Which of the following is the rarest element found naturally on Earth?
(a) Gold
(b) Antimony
(c) Germanium
(d) Astatine
Option d – Astatine
Deficiency of which element can lead to tooth decay?
(a) Iron
(b) Copper
(c) Fluorine
(d) Zinc
Option c – Fluorine
Which metal primarily pollutes urban air due to vehicle emissions?
(a) Cadmium
(b) Lead
(c) Chromium
(d) Nickel
Option b – Lead
Which of the following is a pure element?
(a) Alumina
(b) Brass
(c) Graphite
(d) Silica
Option c – Graphite
An Atom of element X has electrons in the K, L, and M shells. It reacts with sodium to form NaX. How many electrons are in the M shell?
(a) Eight
(b) Seven
(c) Two
(d) One
Option b – Seven
Why do d-block elements in the Periodic Table readily form alloys?
(a) Their atomic sizes are very similar
(b) They contain unpaired electrons
(c) Their ionization energies are alike
(d) They are all metallic in nature
Option b – They contain unpaired electrons
Which element is most abundant in the universe?
(a) Hydrogen
(b) Oxygen
(c) Nitrogen
(d) Carbon
Option a – Hydrogen
What substance is commonly used as a moderator in nuclear reactors?
(a) Thorium
(b) Graphite
(c) Radium
(d) Ordinary water
Option b – Graphite
Consider element A from Group VII of the p-block and element B from Group I of the s-block. Which assumption is accurate?
(a) Both A and B are Metals
(b) Both A and B are non-Metals
(c) A is a metal, B is a non-metal
(d) A is a non-metal, B is a metal
Option d – A is a non-metal, B is a metal
Which periods in the Periodic Table contain both s-block 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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