MEDIUM
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Among Al2O3 ,SiO2 , P2O3 and SO2 the correct order of acid strength is.

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Important Questions on The p-Block Elements

EASY
Aluminium is usually found in +3 oxidation state. In contrast, thallium exists in +1 and +3 oxidation states. This is due to:
EASY
How many five-membered and six-membered rings are present in a buckmisterfullerene C60?
MEDIUM

Match List-I with Match List-II

  List-I
(Metal)
  List-II
(Application)
(A) Cs (I) High temperature thermometer
(B) Ga (II) Water repellent sprays
(C) B (III) Photoelectric cells
(D) Si (V) Bullet proof vest

Choose the most appropriate answer from the options given below

EASY
Which of the following is not a d-block element?
MEDIUM
Which of the following statement is incorrect?
MEDIUM
The oxide, which is neither acidic nor basic is
EASY
It is because of the inability of ns2 electrons of the valence shell to participate in bonding that
EASY
Why is ammonia more basic than phosphine?
EASY
Which of the following reactions lead to chemical inertness:
EASY
Explain why the first member of each of the groups of representative elements exhibits anomalous properties.
MEDIUM
Write a short note on anomalous properties of the first element of p-block.
EASY
Which element is not of a p-block element from the following?
EASY

Give reasons for the following:

Oxidation of sulphur results in a product which turns moist blue litmus red.

EASY
Which of the following is not an example of13-15 compound?
EASY
How many molecules are acidic oxides among the following?

CO, NO2, SO2, SO3, NO, N2O, SiO2, Cl2O7
MEDIUM
Which of the following sequence correctly represents the decreasing acidic nature of oxides?