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Periodic Classification of Elements

44 MCQ questions with answers and explanations · page 1 of 2

Test yourself▶ 25 question test

Q1. Who first classified the elements?

  1. ALothar Meyer
  2. BNewlands
  3. CMendeleev
  4. DDobereiner
Show answer & explanation

Answer: D) Dobereiner

Q2. Formulated the 'Law of Triads' related to the classification of elements.

  1. ALothar Meyer
  2. BDoverunner
  3. CMendeleev
  4. DNewlands
Show answer & explanation

Answer: B) Doverunner

Q3. Who among the following gave the 'Law of Octaves'?

  1. AMendeleev
  2. BNewlands
  3. CLavoisier
  4. DDobereiner
Show answer & explanation

Answer: B) Newlands

Q4. If the elements are listed in order of increasing atomic weights, every eighth element will have properties similar to those of the element before it. This rule is:

  1. AMendeleev's periodic law
  2. BDobereiner's law of triplets
  3. CDuma attempt
  4. DNewlands' law of octaves
Show answer & explanation

Answer: D) Newlands' law of octaves

Q5. The physical and chemical properties of elements are periodic functions of their atomic weights. Who formulated this law?

  1. AMendeleev
  2. BMoseley
  3. CRutherford
  4. DNudes
Show answer & explanation

Answer: A) Mendeleev

Q6. According to Mendeleev, the properties of elements are periodic functions of—

  1. Aof atomic weight
  2. Bof atomic volume
  3. Catomic number of
  4. Dof atomic density
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Answer: A) of atomic weight

Q7. Which scientist first created the 'Periodic Table'?

  1. AMoseley
  2. BMedallion
  3. CDalton
  4. DRutherford
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Answer: B) Medallion

Q8. Who formulated the modern periodic law?

  1. ANewlands
  2. BDobereiner
  3. CMendeleev
  4. DMoseley
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Answer: D) Moseley

Q9. Which scientist arranged the periodic table of elements in increasing order of atomic masses?

  1. ARobert Boyle
  2. BWilliam Ramsay
  3. CHenry Moseley
  4. DDmitri Mendeleev
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Answer: D) Dmitri Mendeleev

Q10. The classification of elements in Mendeleev's periodic table is based on

  1. Aatomic mass
  2. Batomic number
  3. Catomic volume
  4. Datomic density
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Answer: A) atomic mass

Q11. The classification of elements in the modern periodic table is based on

  1. Aatomic number
  2. Batomic mass
  3. Catomic volume
  4. Datomic density
Show answer & explanation

Answer: A) atomic number

Q12. The vertical columns of the periodic table are called

  1. Aperiodicity
  2. BSocial class
  3. CMetal
  4. Dnonmetal
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Answer: B) Social class

Q13. The horizontal columns of the periodic table are called

  1. Aperiodicity
  2. BSocial class
  3. CMetal
  4. Dnonmetal
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Answer: A) periodicity

Q14. The total number of groups in the modern periodic table is

  1. A7
  2. B9
  3. C16
  4. D18
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Answer: D) 18

Q15. The total number of periods in the modern periodic table is

  1. A5
  2. B7
  3. C9
  4. D16
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Answer: B) 7

Q16. The elements are arranged in the modern periodic table

  1. Ain decreasing atomic weight
  2. BIncreasing atomic weight
  3. CIncreasing atomic volume
  4. DIncreasing atomic number
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Answer: D) Increasing atomic number

Q17. The originator of the modern periodic law is

  1. AMoseley
  2. BMendeleev
  3. CAvogad
  4. DDalton
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Answer: A) Moseley

Q18. Who is the father of the periodic table of elements?

  1. Awanderwalls
  2. BJohann Beyer
  3. CAlfred Nobel
  4. DMendeleev
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Answer: D) Mendeleev

Q19. The long form of the periodic table depends on—

  1. Aon the size of the atom
  2. Bon the atomic mass
  3. Con atomic number
  4. Don electronegativity
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Answer: C) on atomic number

Q20. On which one of the following is the modern periodic table based?

  1. Aatomic volume
  2. Batomic number
  3. Catomic mass
  4. Datomic size
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Answer: B) atomic number

Q21. The physical and chemical properties of elements are periodic functions of their atomic numbers. Who formulated this law?

  1. AMendeleev
  2. BMoseley
  3. CNewts
  4. DRutherford
Show answer & explanation

Answer: B) Moseley

Q22. Consider the following statement - "The atomic number of an element is a more fundamental property than its atomic mass." Which of the following scientists made the above statement?

  1. AMendeleev
  2. BHenry Moseley
  3. CThomson
  4. DRutherford
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Answer: B) Henry Moseley

Q23. Mendeleev could not assign correct position to it in his periodic table.

  1. Anitrogen
  2. BCarbon
  3. Coxygen
  4. Dhydrogen
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Answer: D) hydrogen

Q24. In the year 1817, ......... tried to arrange elements with similar properties into groups.

  1. AEmmy Noyther
  2. BHenry Moseley
  3. CDöbernier
  4. DMendeleev
Show answer & explanation

Answer: C) Döbernier

Q25. Which of the following is a fundamental property of an element?

  1. Aatomic mass
  2. Bmolar mass
  3. Catomic number
  4. Datomic density
Show answer & explanation

Answer: C) atomic number

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