p-Block Elements Test

Result

p-Block Elements Test - 30

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.
Q.
Which of the following is not a pseudo halideion?

A
CNO^-

B
CN^-

C
SCN^-

D
S^2-

Solution

Pseudo halides are uni-negative charged similar to halideions.
Question 2
1 / -0

The stability of interhalogen compounds follows the order

A
IF₃ > BrF₃ > CIF₃

B
BrF₃ > IF₃ > CIF₃

C
CIF₃ > BrF₃ > IF₃

D
CIF₃ > IF₃ > BrF₃

Solution

Electropositive character of halogens is in order I > Br > Cl . Central atom is bigger in size, more electropositive nature form stable interhalogen compound.
Question 3
1 / -0

Match the following molecules or ions to their shapes. Which pairing is correct?

A
[I₃]^- : bent

B
BrF₅ : trigonal bipyramidal

C
CIF₃ : trigonal planar

D
[BrF₄]^- : square planar

Solution

[I₃]^-= Linear ; BrF₅= Square pyramidal; ClF₃ = 'T' shaped
Question 4
1 / -0

In XA₅, the central atom has (both X and A are halogens)

A
5 bond pairs and no lone pairs

B
5 bond pairs and one lone pair

C
6 bond pairs and no lone pairs

D
4 bond pairs and one lone pair

Solution

It has square pyramidal shape and it has 5 bond pairs and one lone pair.
Question 5
1 / -0

Which of the following pairs is isostructural?

A
CIF₃, NF₃

B
IF₅, PF₅

C
BrF₅, IF₅

D

Solution

Both have sp³d²-hybridisation with sq uare pyramidal shape
Question 6
1 / -0

Which of the following pairs shows correct match between formula and structure of a species?

A

B

C

D

Solution

[BrF₂]⁺= sp³, angular:
[ICI₄]^- = sp³d², square planar;
IF₅= sp³d², sqare pyramidal;
BrF₃ = sp³d, T shaped
Question 7
1 / -0

HClO is known as

A
chloric acid

B
Chlorine

C
bacteria killer

D
water

Solution

The correct answer is Option A.
IUPAC ID: hypochlorous acid, chloric(I) acid, chloranol, hydroxidochlorine
Formula: HClO
Molar mass: 52.46 g/mol
Soluble in: Water
Conjugate base: Hypochlorite
Question 8
1 / -0

Which of the following is correct for CsBr₃?

A
It is a covalent compound

B
It contains Cs³⁺and Br^- ions

C
It contains Cs⁺ and Br^-₃ ions

D
It contains Cs⁺, Br^- and lattice Br₂ molecules

Solution

CsBr₃ contains Cs⁺, Br^- and lattice Br₂ molecules respectively.
Question 9
1 / -0

In the known interhalogen compounds, the maximum number of atoms are

A
4

B
5

C
8

D
7

Solution

In IF₇, iodine is the least electronegative halogen, so its higher oxidation number (+7) is more stable than those of the lighter member of the group
Question 10
1 / -0

Identify the interhalogen compound with zero dipole moment,

A
ICl₃

B
BrF₅

C
IF₇

D
IF₅

Solution

Due to pentagonal bipyramidal geometry, IF7 has zero dipole momen
Question 11
1 / -0

Direction (Q. Nos. 11 and 12) This section is based on Statement I and Statement II. Select the correct answer from the codes given below.
Q.
Statement I : Interhalogens are ionic compounds.
Statement II : Greater the difference in electronegativity of two different halogen atoms, more is the stability of their interhalogen compound.

A
Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I

B
Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement I

C
Statement I is correct but Statement II is incorrect

D
Statement II is correct but Statement I is incorrect

Solution

Interhalogens are covalent compounds.
Question 12
1 / -0

Statement I : Cyanide ions (CN^-) are also called pseudo halogens.
Statement II : Cyanide ions make electrovalent bonds with electropositive elements like Na, K, etc.

A
Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I

B
Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement I

C
Statement I is correct but Statement II is incorrect

D
Statement II is correct but Statement I is incorrect

Solution

Pseudo halogens have similar chemical properties as that of halogens like complex formation.
Question 13
1 / -0

Direction (Q. No. 13) Choices fo r the correct combination of elements from Column I and Column II are given as options (a), (b), (c) and (d), out of which one is correct.
Q.
Match the Column I with Column II and mark the correct option from the codes given below.

A

B

C

D

Solution