Railways General Science & Technology Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Sample Paper

done Classification of Elements and Periodicity in Properties Sample Test Paper-15 Total Questions - 20    [Download]

• question_answer1)
  The element or elements whose position is anomalous in the periodic table is
  A)
   Halogens         
  done clear
  B)
   Fe, Co and Ni
  done clear
  C)
   Inert gases        
  done clear
  D)
   hydrogen
  done clear
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• question_answer2)
  The energy released when an extra electron is added to a neutral gaseous atom is called
  A)
   Bond energy     
  done clear
  B)
   electron affinity
  done clear
  C)
   Ionization potential
  done clear
  D)
   electronegativity
  done clear
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• question_answer3)
  The cause of periodicity of properties is
  A)
   Increasing atomic radius
  done clear
  B)
   Increasing atomic weights
  done clear
  C)
   Number of electrons in the valency orbit
  done clear
  D)
   The recurrence of similar outer electronic configuration
  done clear
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• question_answer4)
  In which of the following groups, are the elements written in the descending order of their respect atomic weights?
  A)
   Nitrogen, carbon, oxygen, hydrogen
  done clear
  B)
   Oxygen, argon, nitrogen, hydrogen
  done clear
  C)
   Oxygen, nitrogen, helium, hydrogen
  done clear
  D)
   Oxygen, nitrogen, helium, bromine
  done clear
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• question_answer5)
  If the electro negativities of two elements are low, the bond between the two is
  A)
   Ionic               
  done clear
  B)
   covalent
  done clear
  C)
   Co-ordinate      
  done clear
  D)
   a metallic bond
  done clear
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• question_answer6)
  The most electronegative element among sodium, bromium, fluorine, and oxygen is
  A)
   Sodium
  done clear
  B)
   bromium
  done clear
  C)
   Fluorine           
  done clear
  D)
   oxygen
  done clear
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• question_answer7)
  The most electropositive element among the following is
  A)
   Na                  
  done clear
  B)
   Ca
  done clear
  C)
   K                    
  done clear
  D)
   Cs
  done clear
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• question_answer8)
  Rare gases are generally chemically inert because they
  A)
   Are monoatomic
  done clear
  B)
   Have low ionization energy
  done clear
  C)
   Have stable electronic configuration
  done clear
  D)
   Have a high electron affinity
  done clear
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• question_answer9)
  \[f\]-block elements are also called
  A)
   Alkali metals    
  done clear
  B)
          Inner transition elements
  done clear
  C)
    Transition elements
  done clear
  D)
   Transuranic elements
  done clear
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• question_answer10)
  An element with atomic number 36 belongs to the
  A)
   s ?block           
  done clear
  B)
   p-block
  done clear
  C)
   d-block
  done clear
  D)
   \[f\]-block
  done clear
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• question_answer11)

  Consider the following statements.

  1. In Modem Periodic Table, the number of periods is 7.

  2. In Modem Periodic Table, the number of groups is 18.

  3. The long form of Periodic Table was developed by Range and Werner.

  Which of the following is/are correct?

  A)
   Only 1 
  done clear
  B)
   2 and 3
  done clear
  C)
   1 and 2
  done clear
  D)
   1, 2 and 3
  done clear
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• question_answer12)
  Which one of the following is not a periodic property i.e., does not show any trend on moving from one side to the other in the Periodic Table?
  A)
   Atomic size
  done clear
  B)
   Valency
  done clear
  C)
   Radioactivity
  done clear
  D)
   Electronegativity
  done clear
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• question_answer13)
  Which group of Periodic Table contains no metal?
  A)
   1                    
  done clear
  B)
   13
  done clear
  C)
   17                   
  done clear
  D)
     7
  done clear
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• question_answer14)

  Consider the following statements with reference to the Periodic Table of chemical element.

  1. Ionisation potential gradually decreases along a period.

  2. In a group of element, electron affinity decreases as the atomic weight increases.

  3. In a given period, electronegativity decrease as the atomic number increases.

  Which of these statements) is/are correct?

  A)
   Only 1
  done clear
  B)
          Only 2
  done clear
  C)
   1 and 3
  done clear
  D)
   2 and 3
  done clear
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• question_answer15)
  Which of the following properties changes with valency?
  A)
   Atomic weight
  done clear
  B)
   Equivalent weight
  done clear
  C)
   Molecular weight
  done clear
  D)
   Density
  done clear
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• question_answer16)
  Match the Column I with the Column II.

  	Column- I		Column-II
  A.	Modern periodic law	1.	Groups
  B.	Father of periodic table	2.	Moseley
  C.	Vertical lines in modern periodic table	3.	Periods
  D.	Horizontal lines in modern periodic table	4.	Mendeleev

  Codes:
  A)
   A-3, B- 4, C- 2, D-1
  done clear
  B)
   A-4, B-1, C-3, D-2
  done clear
  C)
   A-2, B-4, C-1, D-3
  done clear
  D)
   A-2, B-1, C-3, D-4
  done clear
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• question_answer17)
  The long form of Periodic Table is based on
  A)
   Electro negativity
  done clear
  B)
   mass of the atom
  done clear
  C)
   Shape of the atom        
  done clear
  D)
   atomic number
  done clear
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• question_answer18)
  In Periodic Table, metallic elements appear
  A)
   In the left-hand columns
  done clear
  B)
   In the top-rows
  done clear
  C)
   In the right-hand columns
  done clear
  D)
   In the bottom rows
  done clear
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• question_answer19)
  The first element of rare earth metals is
  A)
   Cerium
  done clear
  B)
   actinium
  done clear
  C)
   Uranium          
  done clear
  D)
   lanthanum
  done clear
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• question_answer20)
  Which of the following pairs of elements is in the same period of the Periodic Table?
  A)
   Na, Ca
  done clear
  B)
   Na, CI
  done clear
  C)
   Ca, CI
  done clear
  D)
          Mg, Sb
  done clear
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