Recommended PYQs (STRICTLY NCERT Based) Classification of Elements and Periodicity in Properties Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Q1:

Arrange the elements Li, Be, B, C, and N in increasing order of their first ionization enthalpies:
1. Li < B < Be < C < N
2. Li < Be < C < B < N
3. Li < Be < N < B < C
4. Li < Be < B < C < N

Subtopic: Ionization Energy (IE) |

77%

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Q2:

Arrange the following elements in increasing order of electronegativity N, O, F, C, Si.
Choose the correct answer from the options given below:
1. Si < C < O < N < F
2. O < F < N < C < Si
3. F < O < N < C < Si
4. Si < C < N < O < F

Subtopic: Electronegativity |

80%

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Q3:

Identify the incorrect statement:

1.	The oxidation state and coordination number (or covalency) of $\mathrm{Al}$ in $\left[\mathrm{AlCl}\left(\mathrm{H}_2 \mathrm{O}\right)_5\right]^{2+}$ are +3 and 6, respectively.
2.	$\mathrm{Na}_2 \mathrm{O}$ is a basic oxide and $\mathrm{Cl}_2 \mathrm{O}_7$ is an acidic oxide
3.	The following four species are called isoelectronic species: $\mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Na}^{+} \mathrm{and}~ \mathrm{Mg}^{2+}$
4.	Among the four species $\mathrm{Mg}, \mathrm{Al}, \mathrm{Mg}^{2+}$ and $\mathrm{A l^{3+},}$ the smallest one is $\mathrm{Al}.$

Subtopic: Ionization Energy (IE) |

81%

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Q4:

Match List-I with List-II :

	List-I (IUPAC official name)		List-II (IUPAC Symbol)
A.	Mendelevium	I.	Mt
B.	Meitnerium	II.	Mc
C.	Moscovium	III.	No
D.	Nobelium	IV.	Md

Choose the correct answer from the options given below:

1. A-III, B-I, C-II, D-IV
2. A-IV, B-II, C-I, D-III
3. A-IV, B-I, C-II, D-III
4. A-I, B-IV, C-II, D-III

Subtopic: Modern Periodic Table & Periodicity |

93%

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Q5:

The correct decreasing order of atomic radii (pm) of Li, Be, B and C is:

1. Be > Li > B > C
2. Li > Be > B > C
3. C > B > Be > Li
4. Li > C > Be > B

Subtopic: Atomic Size |

82%

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Q6:

Match List-I with List-II

	List-I (Block/group in periodic table)		List-II (Element)
A.	Lanthanoid	I.	Ce
B.	d-Block element	II.	As
C.	p-Block element	III.	Cs
D.	s-Block element	IV.	Mn

Choose the correct answer from the options given below:
1. A-I, B-II, C-IV, D-III
2. A-I, B-IV, C-III, D-II
3. A-I, B-IV, C-II, D-III
4. A-IV, B-I, C-II, D-III

Subtopic: Modern Periodic Table & Periodicity |

86%

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Q7:

The element expected to form the largest ion to achieve the nearest noble gas configuration is:

1.	Sodium(Na)	2.	Oxygen(O)
3.	Fluorine(F)	4.	Nitrogen(N)

Subtopic: Atomic Size |

56%

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NEET - 2023

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Q8:

Which one of the following represents all isoelectronic species?
1.

N a^{+}, C l^{-}, O^{-}, N O^{+}

$\mathrm{Na^+ , Cl^-, O^- , NO^+}$
2.

N_{2} O, N_{2} O_{4}, N O^{+}, N O

$\mathrm{N_2O, N_2O_4 , NO^+, NO}$
3.

N a^{+}, M g^{2 +}, O^{-}, F^{-}

$\mathrm{Na^+ , Mg^{2+} , O^- , F^-}$
4.

C a^{2 +}, A r, K^{+}, C l^{-}

$\mathrm{Ca^{2+} , Ar, K^+, Cl^-}$

Subtopic: Ionization Energy (IE) |

76%

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Q9:

Which of the following pair is correctly matched?

1. Basic oxides -

I n_{2} O_{3}, K_{2} O, S n O_{2}

$\mathrm{In_2O_3 , K_2O , SnO_2}$
2. Neutral oxides -

C O, N O_{2}, N_{2} O

$\mathrm{CO, NO_2, N_2O}$
3. Acidic oxides -

M n_{2} O_{7}, S O_{2}, T e O_{3}

$\mathrm{Mn_2O_7, SO_2, TeO_3}$
4. Amphoteric oxides -

B e O, G a_{2} O_{3}, G e O

$\mathrm{BeO , Ga_2O_3 , GeO }$

Subtopic: Nature of Compound |

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Q10:

The correct sequence given below contains neutral, acidic, basic, and amphoteric oxide each, respectively is:

1.	NO, ZnO, CO₂, CaO	2.	ZnO, NO, CaO, CO₂
3.	NO, CO₂, ZnO, CaO	4.	NO, CO₂, CaO, ZnO

Subtopic: Nature of Compound |

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