Which is the monomer of Neoprene in the following?
1.
2.
3.
\(CH_2=CH-C\equiv H\)
4.
\(CH_2=CH-C=CH_2\)
Subtopic: Classification - Methods of Polymerization & Copolymerization |
85%
Level 1: 80%+
AIPMT - 2013
Hints
A magnetic moment of 1.73 BM will be shown by which one of the following:
1. [Ni(CN)4]2–
2. TiCl4
3. [CoCl6]4–
4. [Cu(NH3)4]2+
2. TiCl4
3. [CoCl6]4–
4. [Cu(NH3)4]2+
Subtopic: VBT, CFT & their Limitations |
77%
Level 2: 60%+
AIPMT - 2013
Hints
A metal has a fcc lattice. The edge length of the unit cell is 404 pm. The density of the metal is 2.72 g cm–3. The molar mass of the metal is:
(NA Avogadro's constant = 6.02 × 1023 mol–1)
1. 30 g mol–1
2. 27 g mol–1
3. 20 g mol–1
4. 40 g mol–1
2. 27 g mol–1
3. 20 g mol–1
4. 40 g mol–1
Subtopic: Density & Packing Fraction |
74%
Level 2: 60%+
AIPMT - 2013
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Links
Which structure corresponds to the IUPAC name 3-Ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Nomenclature |
86%
Level 1: 80%+
AIPMT - 2013
Hints
Links
Subtopic: Carbon Family - Preparations, Properties & Uses |
60%
Level 2: 60%+
AIPMT - 2013
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Links
Which of the following meta-directing substituents is the most deactivating in aromatic substitution?
| 1. | –SO3H | 2. | –COOH |
| 3. | –NO2 | 4. | –C≡N |
Subtopic: Directive Effect of functional grp |
68%
Level 2: 60%+
AIPMT - 2013
Hints
The weight of 70% HNO3 concentrated nitric acid solution that should be used to prepare 250 mL of 2.0 M HNO3 is:
1. 90.0 g conc. HNO3
2. 70.0 g conc. HNO3
3. 54.0 g conc. HNO3
4. 45.0 g conc. HNO3
1. 90.0 g conc. HNO3
2. 70.0 g conc. HNO3
3. 54.0 g conc. HNO3
4. 45.0 g conc. HNO3
Subtopic: Concentration Based Problem |
66%
Level 2: 60%+
AIPMT - 2013
Hints
What is the order of the stability of the following tautomeric compounds?
1. III > II > I
2. II > I > III
3. II > III > I
4. I > II > III
2. II > I > III
3. II > III > I
4. I > II > III
Subtopic: Isomers & Reaction Mechanism |
53%
Level 3: 35%-60%
AIPMT - 2013
Hints
Antiseptics and disinfectants either kill or prevent the growth of microorganisms. Identify which of the following statements is not true:
| 1. | Chlorine and Iodine are used as strong disinfectants. |
| 2. | Dilute solutions of Boric acid and Hydrogen Peroxide are strong antiseptics. |
| 3. | Disinfectants harm the living tissues. |
| 4. | A 0.2% solution of phenol is an antiseptic while 1% solution acts as a disinfectant. |
Subtopic: Classification of Medicines |
60%
Level 2: 60%+
AIPMT - 2013
Hints
Subtopic: Classification - Methods of Polymerization & Copolymerization |
78%
Level 2: 60%+
AIPMT - 2013
Hints
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