CBSE Class 10 Science Chapter 5 Periodic Classification of Elements Multiple Choice Questions with Answers. MCQ Class 10 Science Periodic Classification of Elements with Answers was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 10 Science Periodic Classification of Elements MCQs with Answers to know their preparation level.
Multiple Choice Questions - Set - 4
Question 1:
In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the Periodic Table later?
(a) Chlorine
(b) Silicon
(c) Oxygen
(d) Germanium
Correct Answer – (D)
Question 2 :
The arrangement of elements in the Modem Periodic Table is based on their
(a) increasing atomic mass in the period
(b) increasing atomic number in the horizontal rows
(c) increasing atomic number in the vertical columns
(d) increasing atomic mass in the group
Correct Answer – (B)
Question 3 :
Upto which element, the Law of Octaves was found applicable?
(a) Oxygen
(b) Calcium
(c) Cobalt
(d) Potassium
Correct Answer – (B)
Question 4 :
According to IUPAC recommendations, the number of groups in the long form of the periodic table is:
(a) 7
(b) 8
(c) 16
(d) 18
Correct Answer – (D)
Question 5 :
New lands relation is called
(a) Musical Law
(b) Law of Octaves
(c) Periodic Law
(d) Atomic Mass Law
Correct Answer – (B)
Question 6 :
Carbon belongs to the second period and Group 14. Silicon belongs to the third period and Group 14. If atomic number of carbon is 6, the atomic number of silicon is
(a) 7
(b) 14
(c) 24
(d) 16
Correct Answer – (B)
Question 7 :
As we move from left to right in a period in modern periodic table, Atomic sizes of the elements generally
(a) increase
(b) decrease
(c) remain same
(d) approach zero
Correct Answer – (B)
Question 8 :
The most distinctive property of the noble gases is that they are:
(a) Unreactive
(b) Radioactive
(c) Metalloid
(d) Metallic
Correct Answer – (A)
Question 9 :
At the time of Mendeleev, the number of elements known was
(a) 63
(b) 65
(c) 62
(d) 64
Correct Answer – (A)
Question 10 :
An atom of an element has the electronic configuration 2,8,2. To which group does it belong?
(a) 4th group
(b) 6th group
(c) 3rd group
(d) 2nd group
Correct Answer – (D)
- NCERT Solutions Class 10 Science Chapter 1 : Chemical Reactions and Equation
- NCERT Solutions Class 10 Science Chapter 2 : Acids, Bases & Salts
- NCERT Solutions Class 10 Science Chapter 3 : Metals and Non-metals
- NCERT Solutions Class 10 Science Chapter 4 : Carbon And Its Compounds
- NCERT Solutions Class 10 Science Chapter 5 : Periodic Classification of Elements
- NCERT Solutions Class 10 Science Chapter 6 : Life Precesses
- NCERT Solutions Class 10 Science Textbook Download
