P - Block Elements Test

Result

P - Block Elements Test - 32

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Weekly Quiz Competition

Question 1
4 / -1

Atomic orbitals of carbon involved in diamond structure are

A
sp-hybridized

B
sp²-hybridized

C
sp³-hybridized

D
Not hybridized
Question 2
4 / -1

A
2, 2

B
3, 1

C
3, 1

D
4, 0

Solution
Question 3
4 / -1

A

B

C

D

Solution
Question 4
4 / -1

Which one of the following is explosive and readily hydrolysed ?

A
NF₃

B
NCl₃

C
NH₃

D
N₂O₃

Solution
Question 5
4 / -1

Which of the following molecular species has unpaired electrons (s) ?

A
N₂

B
F₂

C

D

Solution
Question 6
4 / -1

In case of nitrogen, NCl₃ is possible but not NCl₅ while in case of phosphorous, PCl₃ as well as PCl₅are possible . It is due to

A
Availability of vacant d-orbitals in P but not in N

B
Lower electronegativity of P than N

C
Lower tendency of H-bond formation in P than N

D
Occurrence of P in solid while N in gaseous states at room temperature
Question 7
4 / -1

Graphite is a soft, solid lubricant; extremely difficult to melt .The reason for this anomalous behaviour is that graphite

A
Is an allotropic form of diamond

B
Has molecules of variable molecular masses like polymers

C
Has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds

D
Is a non crystalline substance
Question 8
4 / -1

Which one of the following compounds has the smallest bond angle in its molecule?

A
OH₂

B
SH₂

C
NH₃

D
SO₂
Question 9
4 / -1

H₃BO₃is

A
Monobasic and weak Lewis acid

B
Monobasic and weak Bronsted acid

C
Monobasic and strong Lewis acid

D
Tribasic and weak Bronsted acid
Question 10
4 / -1

Which one of the following compounds is not a protonic acid ?

A
B (OH)₃

B
PO(OH)₃

C
SO(OH)₂

D
SO₂(OH)₂