The p-Block Elements Test

Result

The p-Block Elements Test - 67

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following interhalogens cannot exist?

A
$$ClF_5$$

B
$$ClI_5$$

C
$$ICl_2^-$$

D
$$IF_4^-$$
Question 2
1 / -0

An aqueous solution of a halogen salt of potassium reacts with the same halogen $$X_2$$ to give $$KX_3$$, a brown-colored solution, in which halogen exists as $$X^-_3$$ ion, $$X_2$$ as a Lewis acid, and $$X^-$$ as a Lewis base, halogen base is:

A
Chlorine

B
Bromine

C
Iodine

D
Fluorine

Solution
Question 3
1 / -0

Element which never has positive oxidation state in any of its compounds is?

A
Chlorine

B
Bromine

C
Oxygen

D
Fluorine
Question 4
1 / -0

Which of the following statements is true?
(i) The order of acidic strength of haloacid is
HF>HCl>HBr>HI.
(ii) The order of stability of compounds is
HF<HCI<HBr<HI.

A
(i) is correct and (ii) is incorrect

B
(i) is incorrect and (ii) is incorrect

C
Both are incorrect

D
Both are correct

Solution
Question 5
1 / -0

Halogens are placed in which group of elements in modern periodic table.

A
17

B
2

C
4

D
6

Solution
Question 6
1 / -0

$$ { I }_{ 2 }C{ l }_{ 6}$$ is formed by the following reaction:

$$ 2IC{ l }_{ 3}\rightleftharpoons {I }_{2 }C{l }_{ 6 } $$

Based on the structure of $$ {I }_{2 }C{l }_{ 6 } $$, find the number of atoms lying in one plane.

A
4

B
6

C
8

D
10

Solution

The maximum number of atoms in a plane in $$I_2Cl_6$$ is 8 and has 3c- 4e bonds in the structure.
Hence, the correct option is C.
Question 7
1 / -0

When $$PbO_{2}$$ reacts with conc. $$HNO_{3}$$ , the gas evolved is

A
$$NO_{2}$$

B
$$O_{2}$$

C
$$N_{2}$$

D
$$N_{2}O$$

Solution
Question 8
1 / -0

Addition of halogen $$(C{l_2} \ or \ B{r_2})$$ to alkenes goes through formation of :

A
Carbocation

B
Carbanion

C
Cyclic halonium ion

D
Carbon free radical
Question 9
1 / -0

$$XeF_{6}$$ on hydrolysis never gives:-

A
$$Xe$$

B
$$XeOF_{4}$$

C
$$HF$$

D
$$XeO_{3}$$

Solution
Question 10
1 / -0

Which one of the halogen is prepared by only electrolysis method?

A
$${ Cl }_{ 2 }$$

B
$${ Br }_{ 2 }$$

C
$${ F }_{ 2 }$$

D
$${ I }_{ 2 }$$

Solution