Match the following : Oxide Nature (a) CO (i) Basic (b) BaO (ii) Neutral (c) Al 2 O 3 (iii) Acidic (d) Cl 2 O 7 (iv) Amphoteric Which of the following is correct option?

(a)-(ii); (b)-(i); (c)-(iv); (d)-(iii)

(a)-(iii); (b)-(iv); (c)-(i); (d)-(ii)

(a)-(iv); (b)-(iii); (c)-(ii); (d)-(i)

(a)-(i); (b)-(ii); (c)-(iii); (d)-(iv)

HARD

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Which of the following cations acts as oxidizing agent ?

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Important Questions on Redox Reactions

EASY

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

It is because of the inability of

{ns}^{2}

electrons of the valence shell to participate in bonding that

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

The acidic, basic and amphoteric oxides, respectively, are

EASY

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

The five successive ionization enthalpies of an element are

800, 2427, 3658, 35024 32824 kJ {mol}^{- 1}

. The number of valence electrons in the element is:

EASY

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

Which of the following arrangements is correct regarding the three types of radii for an atom?

EASY

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

Aluminium is usually found in

+ 3

oxidation state. In contrast, thallium exists in

+ 1

and

+ 3

oxidation states. This is due to:

EASY

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

Which among the following oxides is the most basic?

MEDIUM

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Three elements

X, Y

and

Z

are in the

3^{rd}

period of the periodic table. The oxides of

X, Y

and

Z

, respectively, are basic, amphoteric and acidic. The correct order of the atomic numbers of

X, Y

and

Z

is:

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

Which of the following has highest hydration energy?

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

In the following sets of reactants which two sets best exhibit the amphoteric character of Al₂O₃ . xH₂O ?

\begin{matrix} Set I & {Al}_{2} O_{3} \cdot {xH}_{2} O_{(s)} + {OH}_{(aq)}^{-} \\ Set II & {Al}_{2} O_{3} x \cdot H_{2} O_{(s)} + H_{2} O_{(l)} \\ Set III & {Al}_{2} O_{3} x \cdot H_{2} O_{(s)} + H_{(aq)}^{+} \\ Set IV & {Al}_{2} O_{3} \cdot {xH}_{2} O_{(s)} + {NH}_{3 (aq)} \end{matrix}

HARD

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

The option(s) with only amphoteric oxides is(are):

EASY

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

Covalent bond length of a chlorine molecule is

1.98 \overset{o}{A}

. Covalent radius (in

\overset{o}{A}

) of chlorine atom is _________

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

Which of the following statement is incorrect?

EASY

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

Identify the correct statement from the following.

EASY

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

Match the following :

Oxide	Nature
(a) $CO$	(i) Basic
(b) $BaO$	(ii) Neutral
(c) ${Al}_{2} O_{3}$	(iii) Acidic
(d) ${Cl}_{2} O_{7}$	(iv) Amphoteric

Which of the following is correct option?

EASY

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

Be

and

Al

show similarities in properties due to the diagonal relationship except in the property

X

given below. What is

X

MEDIUM

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Atomic numbers of Vanadium, Chromium, Nickel and Iron are

23, 24, 28

and

26

respectively. Which one of these is been expected to have the highest second ionization enthalpy?

EASY

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

Elements which have relatively high ionisation energy and occur as sulphides are

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

Which of the following orders of ionic radii is correctly represented?

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

The incorrect statement among the following is /are

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions

What is inert pair effect?

Which of the following cations acts as oxidizing agent ?

Important Questions on Redox Reactions

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