All questions of Classification of Elements and Periodicity in Properties for JEE Exam

• a)
  4
• b)
  1
• c)
  3
• d)
  2

• a)
  Only physical properties
• b)
  Only chemical properties
• c)
  In both physical and chemical properties
• d)
  thermodynamic properties

• a)
  +2
• b)
  -1
• c)
  0
• d)
  +1

• a)
  Cell
• b)
  Table
• c)
  Groups
• d)
  Periods

• a)
  Acidic
• b)
  Basic
• c)
  Neutral
• d)
  Amphoteric

• A:

  Sixth

• B:

  First

• C:

  Seventh

• D:

  Second

The answer is a.

• a)
  Elements of group 7 and 8 were arranged on the basis of equivalent weights
• b)
  Some elements in the same group differ in their properties
• c)
  Elements were arranged on the basis of atomic weights
• d)
  The position of hydrogen was not justified

• a)
  7        
• b)
  17        
• c)
  14        
• d)
  11

• a)
  p block
• b)
  s block
• c)
  f block
• d)
  d block

• a)
  top and right hand side
• b)
  top and left hand side 
• c)
  bottom and left hand side
• d)
  bottom and right hand side

• a)
  Germanium
• b)
  Aluminium
• c)
  Gallium
• d)
  Sodium

• a)
  Thorium
• b)
  Lutetium
• c)
  Lawrencium
• d)
  cerium

• a)
  F
• b)
  Si
• c)
  N
• d)
  B

• a)
  The effective nuclear charge is greater in case of sodium ion.
• b)
  Nucleus in each case contains different nucleons.
• c)
  Na+ is more stable than in Na atom.
• d)
  Sodium atom has one electron lesser than sodium ion.

• a)
  Mg, Cl
• b)
  Mg, Cu
• c)
  Mg, Be
• d)
  Mg, Na

• a)
  Number of elements is twice the number of atomic orbitals.
• b)
  Number of elements is three times the number of atomic orbitals.
• c)
  Number of elements is half the number of atomic orbitals.
• d)
  Number of elements is same as the number of atomic orbitals.

• a)
  Acidic
• b)
  Amphtoteric
• c)
  Basic
• d)
  Neutral

• a)
  Newlands
• b)
  Lothar Meyer
• c)
  Henry Moseley
• d)
  Meyer

• a)
  Trinity
• b)
  Trials
• c)
  Triads
• d)
  Diads

• a)
  Si, P, C, N
• b)
  P, Si, N, C
• c)
  C, N, Si, P
• d)
  N, Si, C, P

• a)
  2
• b)
  4
• c)
  5
• d)
  3

• a)
  Germanium
• b)
  Magnesium
• c)
  Gallium
• d)
  Sodium

• a)
  PH3
• b)
  H2S
• c)
  HI
• d)
  KH

• a)
  Gamma rays
• b)
  X-rays
• c)
  UV rays
• d)
  Infra red rays

• a)
  Al₂O₃ < SiO₂ < SO₂ < P₂O₃
• b)
  SiO₂ < SO₂ < Al₂O₃ < P₂O₃
• c)
  SO₂ < P₂O₃ < SiO₂ < Al₂O₃
• d)
  Al₂O₃ < SiO₂ < P₂O₃ < SO₂

• a)
  Number of valence electrons
• b)
  Density
• c)
  Atomic radius
• d)
  Nuclear charge

• a)
  1
• b)
  3
• c)
  2
• d)
  4

• a)
  Uun
• b)
  Uuu
• c)
  UUU
• d)
  None of the above

• a)
  halogen family
• b)
  oxo family
• c)
  chalcogen family
• d)
  peroxo family

• a)
  Na, K, Rb
• b)
  F, Cl, Br
• c)
  Be, Mg, Ca
• d)
  B, Al, Ga

• a)
  Li
• b)
  Na
• c)
  Rb
• d)
  K

• a)
  Na⁺
• b)
  Mg²⁺
• c)
  K⁺
• d)
  Al³⁺

• a)
  Sr
• b)
  Al
• c)
  Li
• d)
  Ca

• a)
  N
• b)
  C
• c)
  O
• d)
  B

• a)
  O^2-
• b)
  B³⁺ 
• c)
  Li⁺ 
• d)
  F^-

• a)
  Mass number
• b)
  Atomic weight
• c)
  Atomic number
• d)
  Ionic radius

• a)
  Electrovalent
• b)
  Covalent as well as electrovalent
• c)
  Covalent
• d)
  Metallic

• a)
  Gallium
• b)
  Sodium and germanium
• c)
  Gallium and germanium
• d)
  Germanium and Gold

• a)
  6
• b)
  3
• c)
  1
• d)
  4

• a)
  Across a period electropositivity of elements increases
• b)
  Across a period basic nature of oxides increases
• c)
  Across a period acidic nature of oxides increases
• d)
  Across a period metallic character increases

• a)
  p block elements only
• b)
  s and p block elements only
• c)
  d block elements only
• d)
  s block elements only

• a)
  ZnO₂
• b)
  SiO₂
• c)
  CO
• d)
  SnO₂

• a)
  s-block
• b)
  d-block
• c)
  p-block
• d)
  f-block

• a)
  80.0
• b)
  162.5
• c)
  81.25
• d)
  91.5

• a)
  Third element
• b)
  Fourth element
• c)
  Second element
• d)
  First element

• a)
  Na
• b)
  Mg
• c)
  K
• d)
  Ca

• a)
  (n-1) d^1-10 ns^0-2
• b)
  (n-2) d^1-10 (n-1) p⁶ ns²
• c)
  (n-1)s² p⁶ d ¹⁰ ns² np⁶ nd^1-10
• d)
  (n-2) d^1-10 (n-1) s² p⁶ d^{1 or 2} ns¹

• a)
  Braggs work on X-ray diffraction
• b)
  Moseleys work on X-ray spectrum
• c)
  Mulliken’s oil drop experiment
• d)
  Lother meyer curve plotted between at vol. & at wt.

• a)
  CO₂<SiO₂ <SnO₂ <PbO₂ : increasing oxidising power
• b)
  HF< HCl < HBr < HI : increasing acid strength
• c)
  NH₃ <PH₃ <AsH₃ <SbH₃ : increasing basic strength
• d)
  B < C < O < N : increasing first ionization enthalpy.