The p-Block Elements Test

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The p-Block Elements Test - 60

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Weekly Quiz Competition

Question 1
1 / -0

The outermost electronic configuration of the most electronegative element is:

A
$$ ns^2np^3 $$

B
$$ ns^2 np^4 $$

C
$$ ns^2 np^5 $$

D
$$ ns^2 np^6 $$

Solution
Question 2
1 / -0

Halogens show usually:

A
Electro-valency

B
Covalency

C
Both electrovalency and covalency

D
Coordinate valency

Solution

Halogens are the most electronegative compound. So, they tend to form both covalent bond and ionic bond by taking or sharing electrons from its valence shell.

Therefore, option (c) is correct.
Question 3
1 / -0

Which of the following statements is correct?

A
All halogens form oxyacids

B
Only chlorine and bromine form oxyacids

C
All halogens except fluorine form oxyacids

D
Only iodine forms oxyacid

Solution

Among the halogens, fluorine does not form oxyacids due to high electronegativity and small size. Fluorine forms only one oxyacid, i.e. HOF, hypofluorous acid.
Question 4
1 / -0

Radon is a:

A
drug

B
explosive

C
trade name of nylon

D
noble gas

Solution

Radon is a chemical element with the symbol Rn and atomic number 86.

It is a radioactive, colorless, odorless, tasteless noble gas.

Hence, option D is correct.
Question 5
1 / -0

Noble gases are chemically inactive because of:

A
mono-atomic nature

B
low boiling points

C
closed valency shell

D
rare occurrence

Solution

Noble gases have no tendency to gain lose or share electrons. They do not participate in chemical reactions.
Because their outermost electron shells (valence shells) are completely filled, so that they have little tendency to gain or lose electrons.

An atom with a closed shell of valence electrons tends to be chemically inert.
Question 6
1 / -0

Wilhem Ostwald redefined action of

A
Anamers

B
Isomers

C
Catalyst

D
Geometry of monomers

Solution

Wilhem Ostwald redefined the action of catalyst.
Question 7
1 / -0

An interhalogen compound is :

A
$$I_3^-$$

B
$$(CN)_2$$

C
$$BrF_3$$

D
$$N_3H$$

Solution
Question 8
1 / -0

Atoms in a $$P_4$$ molecules of white phosphorus are arranged regularly in space in which of the following way

A
at the corners of tetrahedron

B
at the corners of a cube

C
at the corners of a four membered ring

D
at the centre and corners of an equilateral triangle

Solution

Atoms in a $$P_4$$ molecules of white phosphorus are arranged regularly in space at the corners of the tetrahedron.
Question 9
1 / -0

Which of the following is a noble gas?

A
$$H_{2}$$

B
$$O_{2}$$

C
$$N_{2}$$

D
$$Ar$$

Solution

Among the given options, only noble gas is Argon.
Hence, Option "D" is the correct answer.
Question 10
1 / -0

Which inert gas having highest boiling point?

A
$$Xe$$

B
$$Ar$$

C
$$Kr$$

D
$$He$$

Solution

$$Xe$$ gas is having the highest boiling point since it has the highest mass and size.

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Re-Attempt Weekly Quiz Competition

The p-Block Elements Test - 60

Result

The p-Block Elements Test - 60

Score

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Rank

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SHARING IS CARING

Question 1

$$ ns^2np^3 $$

$$ ns^2 np^4 $$

$$ ns^2 np^5 $$

$$ ns^2 np^6 $$

Solution

Question 2

Electro-valency

Covalency

Both electrovalency and covalency

Coordinate valency

Solution

Question 3

All halogens form oxyacids

Only chlorine and bromine form oxyacids

All halogens except fluorine form oxyacids

Only iodine forms oxyacid

Solution

Question 4

drug

explosive

trade name of nylon

noble gas

Solution

Question 5

mono-atomic nature

low boiling points

closed valency shell

rare occurrence

Solution

Question 6

Anamers

Isomers

Catalyst

Geometry of monomers

Solution

Question 7

$$I_3^-$$

$$(CN)_2$$

$$BrF_3$$

$$N_3H$$

Solution

Question 8

at the corners of tetrahedron

at the corners of a cube

at the corners of a four membered ring

at the centre and corners of an equilateral triangle

Solution

Question 9

$$H_{2}$$

$$O_{2}$$

$$N_{2}$$

$$Ar$$

Solution

Question 10

$$Xe$$

$$Ar$$

$$Kr$$

$$He$$

Solution

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