JEE Chemistry Classification Of Elements and Periodicity In Properties MCQs Set B

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MCQ for Full Syllabus Chemistry Classification Of Elements and Periodicity In Properties

Full Syllabus Chemistry students should refer to the following multiple-choice questions with answers for Classification Of Elements and Periodicity In Properties in Full Syllabus.

Classification Of Elements and Periodicity In Properties MCQ Questions Full Syllabus Chemistry with Answers

 

 

Question: Consider the following statements:

(i) Atomic radii decreases across a row of the periodic table when we move from left to right.
(ii) Atomic radii increases down the column as we move from top to bottom.
(iii) Although the order of elements is based on atomic numbers, vertical families share similar chemical properties.
Which of the statement(s) given above is/are correct?

  • a) (i), (ii) and (iii)
  • b) (i) and (iii)
  • c) (i) and (ii)
  • d) (ii) and (iii)

Answer: (i), (ii) and (iii)

 

Question: Consider the following statements:

(i) Fluorine has the highest electron affinity in the periodic table.
(ii) Noble gases are placed extremely left in periodic table.
(iii) Magnesium is more metallic in nature than sodium.
Which of these statement(s) is/are correct ?

  • a) Only (i)
  • b) (i) and (ii)
  • c) (i) and (iii)
  • d) Only (ii)

Answer: Only (i)

 

Question: Which of the following statement(s) is/are incorrect?

(i) Ionization enthalpy is expressed in units of kJmol–1.
(ii) Ionization enthalpy is always positive.
(iii) Second ionization enthalpy will be higher than the third ionization enthalpy.

  • a)  Only (iii)
  • b) None of these
  • c) Only (ii)
  • d) (ii) and (iii)

Answer:  Only (iii)

 

Question: Consider the following statements:

(i) There are 16 groups and 7 periods in the modern periodic table.
(ii) Electro-positive character decreases on moving down a group.
(iii) Electro-negativity in a period increases right from the alkali metal to the inert gas element.
Which of these statement(s) is/are correct ?

  • a) All are incorrect
  • b) (i) and (iii)
  • c) (i) and (ii)
  • d) All are correct

Answer: All are incorrect

 

Question: Read the following three statements and choose the correct option. Here T stands for true and F stands for false statement.

(i) Boron has a smaller first ionization enthalpy than beryllium.
(ii) Nitrogen has smaller first ionization enthalpy than oxygen.
(iii) The first ionization enthalpy increases across a period.

  • a) TFT
  • b) FFT
  • c) FTT
  • d) TFF

Answer: TFT

 

Question: Consider the following statements

(i) The radius of an anion is larger than that of the parent atom.
(ii) The ionization energy generally increases with increasing atomic number in a period.
(iii) The electronegativity of elements increases on moving down across a group.
Which of the above statements is/are correct?

  • a) (i) and (ii)
  • b) (i) alone
  • c) (ii) alone
  • d) (ii) and (iii)

Answer: (i) and (ii)

 

Question: Match the Column-I and Column-II and select correct nswer by given code

  • a) A – (r), B – (q), C – (p)
  • b) A – (q), B – (r), C – (p)
  • c) A – (r), B – (p), C – (q)
  • d) A – (q), B – (p), C – (r)

Answer: A – (r), B – (q), C – (p)

 

Question:

  • a) A–(t); B–(r); C–(s); D–(p); E – (q)
  • b) A–(t); B–(s); C–(r); D–(p); E–(q)
  • c) A–(t); B–(r); C–(s); D–(q); E – (p)
  • d) A–(r); B–(t); C–(s); D–(p); E – (q)

Answer: A–(t); B–(r); C–(s); D–(p); E – (q)

 

Question:

  • a) A – (q), B – (s), C – (p), D – (r)
  • b) A – (q), B – (p), C – (s), D – (r)
  • c) A – (r), B – (s), C – (r), D – (p)
  • d) A – (p), B – (q), C – (s), D – (r)

Answer: A – (q), B – (s), C – (p), D – (r)

 

Question:

  • a) A – (r), B – (p), C – (s), D – (q)
  • b) A – (s), B – (p), C – (r), D – (q)
  • c) A – (r), B – (s), C – (p), D – (q)
  • d) None of these

Answer: A – (r), B – (p), C – (s), D – (q)

 

Question:

  • a) A – (p), B – (s), C – (r), D – (q), E – (t)
  • b) A – (s), B – (p). C – (r), D – (q), E – (t)
  • c) A – (p), B–(s), C – (q), D – (r), E – (t)
  • d) A – (p), B – (s), C – (r), D – (t), E – (q)

Answer: A – (p), B – (s), C – (r), D – (q), E – (t)

 

Question:

  • a) A – (s), B – (p), C – (q), D – (r), E – (t)
  • b) A – (p), B – (s), C – (q), D – (r), E – (t)
  • c) A – (s), B – (q), C – (p), D – (r), E – (t)
  • d) A – (s), B – (p), C – (q), D – (t), E – (r)

Answer: A – (s), B – (p), C – (q), D – (r), E – (t)

 

Question:

  • a) A – (q), B – (s), C – (p), D – (r)
  • b) A – (q), B – (p), C – (s), D – (r)
  • c) A – (q), B – (s), C – (r), D – (p)
  • d) A – (s), B – (q), C – (p), D – (r)

Answer: A – (q), B – (s), C – (p), D – (r)

 

Question:

  • a) A – (s), B – (p), C – (q), D – (r), E – (t)
  • b) A – (s), B – (q), C – (p), D – (r), E – (t)
  • c) A – (p), B – (s), C – (q), D – (r), E – (t)
  • d) A – (s), B – (p), C – (q), D – (t), E – (r)

Answer: A – (s), B – (p), C – (q), D – (r), E – (t)

 

More Questions..................................

 

Question:

  • a) A – (q), B – (r), C – (s), D – (t), E – (p)
  • b) A – (q), B – (s), C – (r), D – (t), E – (q)
  • c) A – (r), B – (q), C – (s), D – (t), E – (p)
  • d) A – (q), B – (r), C – (s), D – (p), E – (t)

Answer: A – (q), B – (r), C – (s), D – (t), E – (p)

 

Question:

  • a) A – (s), B – (p), C – (q), D – (r)
  • b) A – (s), B – (p), C – (r), D – (q)
  • c) A – (p), B – (s), C – (q), D – (r)
  • d) A – (s), B – (q), C – (r), D – (p)

Answer: A – (s), B – (p), C – (q), D – (r)

 

Question:

  • a) A – (q), B – (s), C – (p), D – (r)
  • b) A – (q), B – (s), C – (r), D – (p)
  • c) A – (s), B – (q), C – (r), D – (p)
  • d) A – (s), B – (q), C – (p), D – (r)

Answer: A – (q), B – (s), C – (p), D – (r)

 

Question:

  • a) (A) – (s), B – (q), C – (r)
  • b) (A) – (s), B – (r), C – (p)
  • c) (A) – (s), B – (q), C – (p)
  • d) (A) – (q), B – (s), C – (p)

Answer: (A) – (s), B – (q), C – (r)

 

Question:

  • a) A – (t), B – (r), C – (s), D – (q), E – (p)
  • b) A – (s), B – (q), C – (t), D – (r), E – (p)
  • c) A – (q), B – (r), C– (t), D – (s), E – (p)
  • d) A – (r), B – (q), C – (s), D – (p), E – (t)

Answer: A – (t), B – (r), C – (s), D – (q), E – (p)

 

Question: 

Assertion : In a triad, the three elements present have same gaps of atomic masses.
Reason : Elements in a triad have similar properties

  • a) Assertion is incorrect, reason is correct.
  • b) Assertion is correct, reason is incorrect
  • c) Assertion is correct, reason is correct; reason is not a correct explanation for assertio
  • d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

Answer: Assertion is incorrect, reason is correct.

 

Question:

Assertion : According to Mendeleev, periodic properties of elements is a function of their atomic number.
Reason : Atomic number is equal to the number of protons.

  • a) Assertion is incorrect, reason is correct
  • b) Assertion is correct, reason is incorrect
  • c) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

Answer: Assertion is incorrect, reason is correct

 

Question:

Assertion : Atomic number of the element ununbium is 112.
Reason : Name for digits 1 and 2 is un- and bi-respectively in latin words.

  • a) Assertion is correct, reason is correct; reason is a correct explanation for assertion
  • b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • c) Assertion is correct, reason is incorrect
  • d) Assertion is incorrect, reason is correct.

Answer: Assertion is correct, reason is correct; reason is a correct explanation for assertion

 

Question:

Assertion : Second period consists of 8 elements.
Reason : Number of elements in each period is four times the number of atomic orbitals available in the energy level that is being filled.

  • a) Assertion is correct, reason is incorrect
  • b) Assertion is incorrect, reason is correct
  • c) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

Answer: Assertion is correct, reason is incorrect

 

Question:

Assertion : Helium is placed in group 18 along with p-block elements.
Reason : It shows properties similar to p-block elements

  • a) Assertion is correct, reason is incorrect
  • b) Assertion is incorrect, reason is correct
  • c) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

Answer: Assertion is correct, reason is incorrect

 

Question:

Assertion : Hydrogen can be placed in group 1.
Reason : Hydrogen can gain an electron to achieve a noble gas arrangement.

  • a) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • b) Assertion is correct, reason is incorrect
  • c) Assertion is incorrect, reason is correct
  • d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

Answer: Assertion is correct, reason is correct; reason is not a correct explanation for assertion

 

Question:

Assertion : Atomic size increases along a period.
Reason : Effective nuclear charge increases as the atomic number increases resulting in the increased attraction of electrons to the nucleus.

  • a) Assertion is correct, reason is incorrect
  • b) Assertion is incorrect, reason is correct
  • c) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • d) Assertion is correct, reason is correct; reason is a correct explanation for assertion.

Answer: Assertion is correct, reason is incorrect

 

Question:

Assertion : Second ionization enthalpy will be higher the first ionization enthalpy.
Reason : Ionization enthalpy is a quantitative measure of the tendency of an element to lose electron.

  • a) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • b) Assertion is correct, reason is incorrect
  • c) Assertion is incorrect, reason is correct
  • d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

Answer: Assertion is correct, reason is correct; reason is not a correct explanation for assertion

 

Question:

Assertion : Alkali metals have least value of ionization energy within a period.
Reason : They precede alkaline earth metals in periodic table.

  • a) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • b) Assertion is correct, reason is incorrect
  • c) Assertion is incorrect, reason is correct
  • d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

Answer: Assertion is correct, reason is correct; reason is not a correct explanation for assertion

 

Question:

Assertion : Electron gain enthalpy can be exothermic or endothermic.
Reason : Electron gain enthalpy provides a measure of the ease with which an atom adds an electron to form anion.

  • a) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • b) Assertion is correct, reason is incorrect
  • c) Assertion is incorrect, reason is correct
  • d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

Answer: Assertion is correct, reason is correct; reason is not a correct explanation for assertion

 

Question:

Assertion : Smaller the size of an atom greater is the electronegativity.
Reason : Electronegativity refers to the tendency of atom so share electrons with other atom

  • a) Assertion is correct, reason is incorrect
  • b) Assertion is incorrect, reason is correct
  • c) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

Answer: Assertion is correct, reason is incorrect

 

Question: Which fact is not valid for Dobereiner's triads?

  • a) The properties of middle element is roughly average of the other two elements
  • b) The elements of triads belong to the same group of modern periodic table
  • c) The elements of triads have same valency electrons
  • d) The atomic weight of middle element is roughly average of the other two elements

Answer: The properties of middle element is roughly average of the other two elements

 

Question: In the Mendeleev periodic table, which of the following element instead of having lower atomic weight was placed after the element of higher atomic weight thereby ignoring the order of increasing atomic weights.

  • a) Iodine
  • b) Bromine
  • c) Antimony
  • d) Molybdenum

Answer: Iodine

 

Question: Which of the following is correct about Eka-Aluminium and Eka-Silicon ?

  • a) Both
  • b) Melting point of Eka-Aluminium is lower than the melting point of Eka-Silicon
  • c) Oxides of Eka-Aluminium is Al2O3 and Eka-Silicon is Si2O3
  • d) None of these

Answer: Both

 

Question:  Which of the following elements are found in pitch blende?

  • a) Both
  • b) Actinium and protoactinium
  • c) Neptunium and plutonium
  • d) None of these

Answer: Both

 

Question: Which of the following period contain most of the manmade radioactive elements?

  • a) Seventh
  • b) Sixth
  • c) Fifth
  • d) None of these

Answer: Seventh

 

Question:

  • a) 33
  • b) 36
  • c) 34
  • d) 49

Answer: 33

 

Question: Which of the following elements show the given properties?

(i) All elements are metals.
(ii) Most of the elements form coloured ions, exhibit variable valence and paramagnetism.
(iii) Oftently used as catalysts.

  • a) Transition elements
  • b) Chalcogens
  • c) Inner transition elements
  • d) Representative elements

Answer: Transition elements

 

Question: Which of the given elements A, B, C, D and E with atomic number 2, 3, 7, 10 and 30 respectively belong to the same period?

  • a) B, C, D
  • b) B, D, E
  • c) A, B, C
  • d) A, D, E

Answer: B, C, D

 

Question:

  • a) Both
  • b) Alkali metals
  • c) Halogens
  • d) None of these

Answer: Both

 

Question: Which of the following statements is incorrect from the point of view of modern periodic table ?

  • a) Noble gases are arbitrarily placed in eighteenth group
  • b) Transition elements fit in the middle of long periods
  • c) There are eighteen vertical columns called groups
  • d) Elements are arranged in the order of increasing atomic number

Answer: Noble gases are arbitrarily placed in eighteenth group

 

Question: Element X forms a chloride with the formula XCl2, which is a solid with a high melting point. X would most likely be in the same group of the periodic table as –

  • a) Mg
  • b) Si
  • c) Na
  • d) Al

Answer: Mg

 

Question: An element X belongs to fourth period and fifteenth group of the periodic table. Which one of the following is true  regarding the outer electronic configuration of X ? It has

  • a) Completely filled s-orbital and half-filled p-orbitals
  • b) Half-filled d-robitals and completely filled s-orbitals
  • c) Partially filled d-orbitals and completely filled s-orbitals
  • d) None of these

Answer: Completely filled s-orbital and half-filled p-orbitals

 

Question:

  • a) Period = 3rd, block = p, group = 16
  • b) Period = 5th, block = s, group = 1
  • c) Period = 3rd, block = p, group = 10
  • d) Period = 4th, block = d, group = 12

Answer: Period = 3rd, block = p, group = 16

 

Question: The periodic table of elements does not

  • a) tell us about the arrangement of atoms in a molecule
  • b) include the inert gases
  • c) allow us to make accurate guess of the properties of undiscovered elements
  • d) reveal regularities in the occurance of elements with similar properties

Answer: tell us about the arrangement of atoms in a molecule

 

Question: The lightest liquid metal is

  • a) Cs
  • b) Hg
  • c) Ga
  • d) Fr

Answer: Cs

 

Question: The correct sequence which shows decreasing order of the ionic radii of the elements is

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: The ionic radii (Å) of C 4– and O2– respectively are 2.60 and 1.40. The ionic radius of the isoelectronic ion N3– would be

  • a) 1.71
  • b) 0.95
  • c) 2.6
  • d) 1.4

Answer: 1.71

 

Question: Which of the following species will have the smallest and the largest size?

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: Covalent radii of atoms varies in range of 72 pm to 133 pm from F to I while that of noble gases He to Xe varies from 120pm to 220pm. This is because in case of noble gases

  • a) van der Waal radius is considered
  • b) metallic radii is considered
  • c) None of these
  • d) covalent radius is very large

Answer: van der Waal radius is considered

 

Question: The van der Waal and covalent radii of fluorine atom respectively from the following figure are

  • a) 147pm, 72pm
  • b) 219pm, 72pm
  • c) 75pm, 72pm
  • d) 147pm, 144pm

Answer: 147pm, 72pm

 

Question:

  • a)

  • b)

  • c)

  • d) None of these

Answer: 

 

Question:

  • a) II and V
  • b) I and V
  • c) V and II
  • d) IV and V

Answer: II and V

 

Question: Among the following transition elements, pick out the element/elements with highest second ionization energy.

(A) V (At. no = 23)     (B) Cr (At. no = 24)
(C) Mn (At. no = 25)  (D) Cu (At. no = 29)
(E) Zn (At. no = 30)

  • a) (B) and (D)
  • b) Only (D)
  • c) (A) and (C)
  • d) (B) and (E)

Answer: (B) and (D)

 

Question: As we move across the second period from C to F ionisation enthalpy increases but the trend from C to F for ionisation enthalpy is C < O < N < F why it is not C < N < O < F. This is because

  • a) electronic configuration of N is more stable than electronic configuration of O
  • b) atomic radii of N > atomic radii of O
  • c) None of these
  • d) atomic radii of O > atomic radii of N

Answer: electronic configuration of N is more stable than electronic configuration of O

 

Question: If ionisation enthalpy of oxygen is lesser than nitrogen because of two of the four 2p– electrons occupy same 2porbital than why such case is not possible with fluorine which contain greater no of paired electrons because

  • a) nuclear charge overpower electronic repulsions
  • b) None of these
  • c) smaller size of orbitals
  • d) greater size of atomic orbitals

Answer:   nuclear charge overpower electronic repulsions

 

Question: Which of the following statements is wrong ?

  • a) All isoelectronic ions belong to same period of the periodic table
  • b) van der Waal’s radius of iodine is more than its covalent radius
  • c) Both
  • d) None of these

Answer: All isoelectronic ions belong to same period of the periodic table

 

Question:  Which one of the following statements is incorrect ?

  • a) Electron affinity decreases from fluorine to iodine in 17th group
  • b) Chlorine has highest electron affinity
  • c) Nitrogen has zero electron affinity
  • d)  Greater the nuclear charge, greater is the electron affinity

Answer: Electron affinity decreases from fluorine to iodine in 17th group

 

Question: The elements with zero electron affinity are

  • a) Beryllium and Helium
  • b) Boron and Carbon
  • c) Lithium and Sodium
  • d) Fluorine and Chlorine

Answer: Beryllium and Helium

 

Question: Which of the following property of element is directly related to electronegativity?

  • a) Non-metallic character
  • b) Atomic radius
  • c) Ionization enthalpy
  • d) None of these

Answer: Non-metallic character

  

Question: Which is not the correct order for the stated property.

  • a) F > O > N ; first ionization enthalpy
  • b) Ba > Sr > Mg ; atomic radius
  • c) Cl > F > I ; electron affinity
  • d) O > Se > Te ; electronegativity

Answer: F > O > N ; first ionization enthalpy

 

Question: In which of the following arrangements, the order is NOT according to the property indicated against it?

  • a) B < C < N < O

    Increasing first ionization enthalpy

  • b) I < Br < F < Cl :

    Increasing electron gain enthalpy
    (with negative sign)

  • c) Li < Na < K < Rb :

    Increasing metallic radius

  • d) None of these

Answer: B < C < N < O

Increasing first ionization enthalpy

 

Question: The compounds of the s-block elements, with the exception of lithium and ...X... are predominantly ionic. Here, X refers to

  • a) beryllium
  • b) helium
  • c) hydrogen
  • d) magnesium

Answer: beryllium

 

Question:

  • a)

  • b)

  • c) Both
  • d) None of these

Answer:

 

Question:  Observe the following periodic table

  • a) Z > Y > X
  • b) X > Z > Y
  • c) Y > Z > X
  • d) X > Y > Z

Answer:  Z > Y > X

 

Question:

  • a) (i) and (ii) 
  • b) (i) and (iii)
  • c) (i), (ii) and (iii)
  • d) (ii) and (iii)

Answer:  (i) and (ii)

 

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