Periodic Classification of Elements MCQ Questions for Class 10 Science Chapter 5 with Answers

NCERTCOURSE.COM- Find here the NCERT/CBSE chapter-wise Multiple Choice Questions from Class 10 Science book Chapter 5 Periodic Classification of Elements with Answers Pdf free download. This may assist you to understand and check your knowledge about the chapters. Students also can take a free test of the Multiple Choice Questions of Periodic Classification of Elements. Each question has four options followed by the right answer. These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.

MCQ Questions for Class 10 Science with Answers Chemistry

Q1. The most distinctive property of the noble gases is that they are:

(i) Unreactive
(ii) Radioactive
(iii) Metalloid
(iv) Metallic

(i) Unreactive

Q2. According to IUPAC recommondations, the number of groups in the long form of the periodic table is:

(i) 7
(ii) 8
(iii) 16
(iv) 18

(iv) 18

Q3. Upto which element, the Law of Octaves was found applicable?

(i) Oxygen
(ii) Calcium
(iii) Cobalt
(iv) Potassium

(ii) Calcium

Q4. At the time of Mendeleev, the number of elements known was

(i) 63
(ii) 65
(iii) 62
(iv) 64

(i) 63

Q5. As we move from left to right in a period in modern periodic table, Atomic sizes of the elements generally

(i) increase
(ii) decrease
(iii) remain same
(iv) approach zero

(ii) decrease

Q6. Newlands relation is called

(i) Musical Law
(ii) Law of Octaves
(iii) Periodic Law
(iv) Atomic Mass Law

(ii) Law of Octaves

Q7. The arrangement of elements in the Modem Periodic Table is based on their

(i) increasing atomic mass in the period
(ii) increasing atomic number in the horizontal rows
(iii) increasing atomic number in the vertical columns
(iv) increasing atomic mass in the group

(ii) increasing atomic number in the horizontal rows

Q8. An atom of an element has the electronic confi-guration 2,8,2. To which group does it belong?

(i) 4th group
(ii) 6th group
(iii) 3rd group
(iv) 2nd group

(iv) 2nd group

Q9. 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

(i) 7
(ii) 14
(iii) 24
(iv) 16

(ii) 14

Q10. Where would you locate the element with electronic configuration 2, 8 in the Modern Periodic Table?

(i) Group 8
(ii) Group 2
(iii) Group 18
(iv) Group 10

(iii) Group 18

Q11. 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?

(i) Chlorine
(ii) Silicon
(iii) Oxygen
(iv) Germanium

(iv) Germanium

Q12. What is the atomic number of element of period 3 and group 17 of the Periodic Table?

(i) 10
(ii) 4
(iii) 17
(iv) 21

(iii) 17

Q13. The law of the modern periodic table was proposed by:

(i) H.G.I Moselly
(ii) Dobereincer
(iii) D.I. Mendeleev
(iv) Newlands

(i) H.G.I Moselly

Q14. Pick out the chemically most reactive elements from the given triads.
Li, Na, K F, Cl, Br

(i) Li and F
(ii) Li and Br
(iii) K and F
(iv) K and Br

(iii) K and F

Q15. The elements A, B and C belong to groups 1, 14 and 17 respectively of the Periodic Table. Which two elements will form ionic compounds?

(i) A and B
(ii) A and C
(iii) B and C
(iv) None

(ii) A and C

Q16. Dobereiner’s triad arranged the elements with similar properties into:

(i) Periods
(ii) Groups
(iii) Both period and group
(iv) None of these

(ii) Groups

Q17. Name the neutral atom in the Periodic Table which has the same number of electrons as K+ and Cl-.

(i) Helium
(ii) Argon
(iii) Neon
(iv) Krypton

(ii) Argon

Q18. Which of the following is the outermost shell for elements of second period?

(i) K shell
(ii) L shell
(iii) M shell
(iv) N shell

(ii) L shell

Q19. An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the Periodic Table does it belong?

(i) Group 1
(ii) Group 4
(iii) Group 2
(iv) Group 3

(i) Group 1

Q20. An element ‘A’ belongs to the third period and group 16 of the Periodic Table. Find out the valency of A.

(i) Valency = 6
(ii) Valency = 2
(iii) Valency = 1
(iv) Valency = 3

(ii) Valency = 2

Q21. How many elements are placed in lanthanide and actinide series?

(i) 57, 89
(ii) 14, 14
(iii) 89, 57
(iv) 14, 16

(ii) 14, 14

Q22. An element X combines with oxygen to form an oxide XO. This oxide is electrically conducting. Write the formula of the compound formed when X reacts with chlorine.

(i) XCl3
(ii) XCl
(iii) XCl2
(iv) XCl5

(iii) XCl2

Q23. Which of the following elements of noble gases participate in chemical reaction?

(i) Kr, Rn
(ii) He, Kr
(iii) Rn, He
(iv) He, Ne

(i) Kr, Rn

Q24. Which one of the following statements is not correct about the trends in the properties of the elements of a group on going down in a group?

(i) The chemical reactivity of metals increases.
(ii) The metallic character of elements increases.
(iii) The size of the atom increases.
(iv) The valence electrons increase.

(iv) The valence electrons increase.

Q25. The element which has least tendency to lose electron is

(i) H
(ii) Li
(iii) He
(iv) Ne

(iii) He

I Think the given NCERT MCQ Questions for class 10 Science book Chapter 5 Periodic Classification of Elements with Answers Pdf free download will assist you. If you’ve got any queries regarding CBSE Class 10 Science Periodic Classification of Elements MCQs Multiple Choice Questions with Answers, drop a comment below and that we will come back to you soon.

MCQ Questions for Class 10 Science Chemistry with Answers

MCQ Questions for Class 10 Science Biology with Answers

MCQ Questions for Class 10 Science Physics with Answers

Leave a Comment