A compound that cannot give Friedel-Craft’s reaction is:
1.
Xylene
2.
Nitrobenzene
3.
Toluene
4.
Cumene
Subtopic: Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
74%
Level 2: 60%+
AIPMT - 2013
Hints
Which of the following species is least likely to act as a Lewis base?
1. F–2. BF3
3. PF3
4. CO
Subtopic: Acids & Bases - Definitions & Classification |
76%
Level 2: 60%+
AIPMT - 2013
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Subtopic: Properties of Structure of SiO2 & Other Compounds |
70%
Level 2: 60%+
AIPMT - 2013
Hints
Subtopic: Compressibility Factor |
71%
Level 2: 60%+
AIPMT - 2013
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Subtopic: Ionisation Constant of Acid, Base & Salt |
72%
Level 2: 60%+
AIPMT - 2013
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Subtopic: Name Reaction |
84%
Level 1: 80%+
AIPMT - 2013
Hints
Links
The radical, 
is aromatic because it has:
1. 7 p-orbitals and 6 \(\pi\) electrons
2. 7 p-orbitals and 7 \(\pi\) electrons
3. 6 p-orbitals and 7 \(\pi\) electrons
4. 6 p-orbitals and 6 \(\pi\) electrons
is aromatic because it has:1. 7 p-orbitals and 6 \(\pi\) electrons
2. 7 p-orbitals and 7 \(\pi\) electrons
3. 6 p-orbitals and 7 \(\pi\) electrons
4. 6 p-orbitals and 6 \(\pi\) electrons
Subtopic: Hybridisation & Structure of Carbon Compounds |
Level 3: 35%-60%
AIPMT - 2013
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Roasting of sulphides gives the gas X as a by-product. This is a colourless gas with a choking smell of burnt sulphur and causes great damage to respiratory organs as a result of acid rain. Its aqueous solution is acidic and acts as an oxidizing agent and its acid has never been isolated. The gas X is:
1. SO2
2. CO2
3. SO3
4. H2S
Subtopic: Intro - Flux, Leaching, Roasting & Calcination |
83%
Level 1: 80%+
AIPMT - 2013
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At 25ºC, molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is \(\mathrm{9.54 ~ohm^{–1}cm^2 mol^{–1}}\) and at infinite dilution, its molar conductance is \(\mathrm{238 ~ohm^{–1} cm^2~ mol^{–1}.}\) The degree of ionization of ammonium hydroxide at the same concentration and temperature is:
1. 20.800%
2. 4.008%
3. 40.800%
4. 2.080%
1. 20.800%
2. 4.008%
3. 40.800%
4. 2.080%
Subtopic: Kohlrausch Law & Cell Constant |
82%
Level 1: 80%+
AIPMT - 2013
Hints
The incorrect statement among the following regarding interstitial compounds is:
1. They are chemically reactive.
2. They are much harder than the pure metal.
3. They have a higher melting point than pure metals.
4. They retain metallic conductivity.
1. They are chemically reactive.
2. They are much harder than the pure metal.
3. They have a higher melting point than pure metals.
4. They retain metallic conductivity.
Subtopic: d-Block Elements- Properties & Uses |
83%
Level 1: 80%+
AIPMT - 2013
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