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Q. No.Subtopic: Group 15 - Preparation, Properties & Uses |
Level 3: 35%-60%
JEE
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| Statement I: | Chlorine easily forms oxides and the compounds are explosive. |
| Statement II: | The higher oxidation states of chlorine, bromine, and iodine are released when halogens form oxides and fluorides. |
| 1. | Statement I is correct but Statement II is incorrect. |
| 2. | Statement I is incorrect but Statement II is correct. |
| 3. | Both Statement I and Statement II are correct. |
| 4. | Both Statement I and Statement II are incorrect. |
Subtopic: Group 17 - Preparation, Properties & Uses |
80%
Level 1: 80%+
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Consider the following condition,
(i). X: Oxidation number of Br in bromic acid.
(ii). Y: Oxidation number of Br in perbromic acid.
The value of (X+Y) is:
1. 10
2. -1
3. 12
4. 8
(i). X: Oxidation number of Br in bromic acid.
(ii). Y: Oxidation number of Br in perbromic acid.
The value of (X+Y) is:
1. 10
2. -1
3. 12
4. 8
Subtopic: Group 17 - Preparation, Properties & Uses |
58%
Level 3: 35%-60%
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Chloride salt of M is treated with excess of AgNO3. It forms curdy white precipitate ‘A’. When ‘A’ is treated with NH4OH, it forms a soluble salt ‘B’. The A and B respectively are:
1. AgCl, [Ag(NH3)2]+
2. AgBr, [Ag(OH)2]−
3. AgCl, [Ag(OH)4]2−
4. AgBr, [Ag(OH)4]2−
1. AgCl, [Ag(NH3)2]+
2. AgBr, [Ag(OH)2]−
3. AgCl, [Ag(OH)4]2−
4. AgBr, [Ag(OH)4]2−
Subtopic: Group 15 - Preparation, Properties & Uses |
72%
Level 2: 60%+
JEE
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The correct decreasing order of positive electron gain enthalpy for the following inert gases is:
He, Ne, Kr, Xe
1. He > Ne > Kr > Xe
2. He > Ne > Xe > Kr
3. He > Xe > Ne > Kr
4. Ne > Kr > Xe > He
He, Ne, Kr, Xe
1. He > Ne > Kr > Xe
2. He > Ne > Xe > Kr
3. He > Xe > Ne > Kr
4. Ne > Kr > Xe > He
Subtopic: Group 18 - Preparation, Properties & Uses |
Level 3: 35%-60%
JEE
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Thionyl chloride on reaction with white phosphorous gives compound A.
A on hydrolysis gives compound B which is dibasic. Identify A and B:
A on hydrolysis gives compound B which is dibasic. Identify A and B:
| A | B | |
| 1 | PCl5 | H3PO2 |
| 2 | P4O6 | H3PO4 |
| 3 | POCl3 | H3PO4 |
| 4 | PCl3 | H3PO3 |
Subtopic: Group 15 - Preparation, Properties & Uses |
75%
Level 2: 60%+
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Subtopic: Group 17 - Preparation, Properties & Uses |
69%
Level 2: 60%+
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Lead nitrate decomposes on heating as:
\(\mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2} \stackrel{\Delta}{\longrightarrow} \mathrm{A}+\mathrm{PbO}+\mathrm{O}_{2} \)
'A' on dimerization gives 'B', then the number of bridging oxygen atom(s) in 'B' is:
1. 1
2. 0
3. 2
4. 3
\(\mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2} \stackrel{\Delta}{\longrightarrow} \mathrm{A}+\mathrm{PbO}+\mathrm{O}_{2} \)
'A' on dimerization gives 'B', then the number of bridging oxygen atom(s) in 'B' is:
1. 1
2. 0
3. 2
4. 3
Subtopic: Group 15 - Preparation, Properties & Uses |
68%
Level 2: 60%+
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Consider the following reactions,
\(\begin{aligned} &\mathrm{PCl}_{5}+\mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{A}+\mathrm{HCl} \\ &\mathrm{A}+\mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{B}+\mathrm{HCl} \end{aligned}\)
What is the maximum numbers of ionizable hydrogen in B?
1. Two (2)
2. Zero (0)
3. Three (3)
4. One (1)
\(\begin{aligned} &\mathrm{PCl}_{5}+\mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{A}+\mathrm{HCl} \\ &\mathrm{A}+\mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{B}+\mathrm{HCl} \end{aligned}\)
What is the maximum numbers of ionizable hydrogen in B?
1. Two (2)
2. Zero (0)
3. Three (3)
4. One (1)
Subtopic: Group 16 - Preparation, Properties & Uses |
57%
Level 3: 35%-60%
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Which of the following options correctly indicates the number of compounds containing a direct nitrogen-nitrogen (N-N) bond among N₂O, N₂O₄, N₂O₃, and N₂O₅?
| 1. | One (1) | 2. | Zero (0) |
| 3. | Three (3) | 4. | Two (2) |
Subtopic: Group 15 - Preparation, Properties & Uses |
54%
Level 3: 35%-60%
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