Periodic Table and Periodicity · Chemistry · AP EAPCET

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MCQ (Single Correct Answer)

1
Which of the following orders is not correct against the given property?
AP EAPCET 2024 - 20th May Evening Shift
2
$$ \text { Match the following. } $$
$$
\text { List-I }
$$
$$
\text { List-II }
$$
A $$
\text { Ionisation enthalpy }
$$
I $$
\mathrm{P}<\mathrm{Si}<\mathrm{Mg}<\mathrm{Na}
$$
B $$
\text { Metallic character }
$$
II $$
\mathrm{I}<\mathrm{N}<\mathrm{O}<\mathrm{F}
$$
C $$
\text { Electron gain enthalpy }
$$
III $$
\mathrm{B}<\mathrm{Be}<\mathrm{C}<\mathrm{O}<\mathrm{N}
$$
D $$
\text { Electronegativity }
$$
IV $$
\mathrm{l}<\mathrm{Br}<\mathrm{F}<\mathrm{Cl}
$$
AP EAPCET 2024 - 20th May Morning Shift
3
Which of the following oxides is acidic in nature?
AP EAPCET 2024 - 20th May Morning Shift
4
If the first ionisation enthalpy of $\mathrm{Li}, \mathrm{Be}$ and C respectively are $520,899,1086 \mathrm{~kJ} \mathrm{~mol}^{-1}$. The first ionisation enthalpy (in $\mathrm{kJ} \mathrm{mol}^{-1}$ ) of B will be
AP EAPCET 2024 - 19th May Evening Shift
5
Match of following.
List I
(Element)
List II
(Electron gain enthalpy (in $\mathrm{kJ} \mathrm{mol}^{-1}$ )
A F I -141
B Cl II -328
C O III -200
D S IV -349
The correct answer is
AP EAPCET 2024 - 18th May Morning Shift
6
Identify the basic oxide from the following.
AP EAPCET 2024 - 18th May Morning Shift
7

In which of the following oxides of three elements $$X, Y$$ and $$Z$$ are correctly arranged in the increasing order of acidic nature. The electronic configurations of $$X, Y$$ and $$Z$$ are $$[\mathrm{Ne}] 3 s^2 3 p^1, [\mathrm{Ne}] 3 s^2 3 p^5$$. [Ne] $$3 s^2$$ respectively

AP EAPCET 2022 - 5th July Morning Shift
8

Assertion (A) 16 th group elements have higher ionisation enthalpy values than 15 th group elements in the corresponding periods.

Reason (R) 15 th group elements have half-filled stable electronic configurations.

AP EAPCET 2022 - 5th July Morning Shift
9

Assertion (A) Fluorine has smaller negative electron gain enthalpy than chlorine.

Reason (R) The electron-electron repulsion is higher in chlorine than in fluorine.

AP EAPCET 2022 - 5th July Morning Shift
10

In which of the following, elements are arranged in the correct order of their electron gain enthalpies?

AP EAPCET 2022 - 4th July Evening Shift
11

In second period of the long form of the periodic table an element $$X$$ has second lowest first ionisation enthalpy and element $$Y$$ has second highest first ionisation enthalpy values. What are $$X$$ and $$Y$$ ?

AP EAPCET 2022 - 4th July Evening Shift
12

Lithium shows diagonal relationship with element '$$X$$' and aluminium with $$Y . X$$ and $$Y$$ respectively are

AP EAPCET 2022 - 4th July Morning Shift
13

The correct order of the metallic character of the elements $$\mathrm{Be}, \mathrm{Al}, \mathrm{Na}, \mathrm{K}$$ is

AP EAPCET 2022 - 4th July Morning Shift
14

Which of the following tetrahalides does not exist?

AP EAPCET 2022 - 4th July Morning Shift
15

The element with outer electronic configuration $$(n-1) d^2 n s^2$$, where $$n=4$$, would belong to

AP EAPCET 2021 - 19th August Evening Shift
16

Choose the correct option regarding the following statements

Statement 1 Nitrogen has lesser electron gain enthalpy than oxygen.

Statement 2 Oxygen has lesser ionisation enthalpy than nitrogen.

AP EAPCET 2021 - 19th August Evening Shift
17

Among the given configurations, identify the element which does not belong to the same family as the others?

AP EAPCET 2021 - 19th August Evening Shift
18

Which statements among the following are correct about helium?

(i) Liquid helium is used to sustain powerful superconducting magnets.

(ii) Liquid helium is useful to carry low temperature experiments.

(iii) It is a heavy gas.

(iv) It is a flammable gas.

AP EAPCET 2021 - 19th August Evening Shift
19

Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements?

1. Nitrogen (N) 2. Phosphorus (P) 3. Chlorine (Cl) 4. Fluorine (F)

AP EAPCET 2021 - 19th August Morning Shift
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