Match the following:
| Oxide | Nature | ||
| (a) | CO | (i) | Basic |
| (b) | BaO | (ii) | Neutral |
| (c) | Al2O3 | (iii) | Acidic |
| (d) | Cl2O7 | (iv) | Amphoteric |
Which of the following is the correct option?
| a | b | c | d | |
| 1. | (ii) | (i) | (iv) | (iii) |
| 2. | (iii) | (iv) | (i) | (ii) |
| 3. | (iv) | (iii) | (ii) | (i) |
| 4. | (i) | (ii) | (iii) | (iv) |
Subtopic: Acidic, Basic Character & Fajan's Rule |
86%
Level 1: 80%+
NEET - 2020
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A tertiary butyl carbocation is more stable than a secondary butyl carbocation because-
1. + R effect of groups
2. R effect of CH3 groups
3. Hyperconjugation
4. l effect of CH3 groups
Subtopic: Electron Displacement Effects | Reaction Intermediates ; Preparation & Properties |
76%
Level 2: 60%+
NEET - 2020
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Links
Which of the following contains the maximum number of atoms ?
| 1. | 1 g of Mg(s) | 2. | 1 g of O2 (g) |
| 3. | 1 g of Li(s) | 4. | 1 g of Ag(s) |
Subtopic: Moles, Atoms & Electrons |
79%
Level 2: 60%+
NEET - 2020
Hints
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
86%
Level 1: 80%+
NEET - 2020
Hints
The correct option for free expansion of an ideal gas under adiabatic condition is:
1. and
2. and
3. and
4. and
Subtopic: 2nd & 3rd Law of Thermodynamics |
77%
Level 2: 60%+
NEET - 2020
Hints
Identify the incorrect match:
| Name | IUPAC Official Name | ||
| (a) | Unnilunium | (i) | Mendelevium |
| (b) | Unniltrium | (ii) | Lawrecium |
| (c) | Unnilhexium | (iii) | Seaborgium |
| (d) | Unununium | (iv) | Darmstadtium |
| 1. | (b)-(ii) | 2. | (c)-(iii) |
| 3. | (d)-(iv) | 4. | (a)-(i) |
Subtopic: Modern Periodic Table & Periodicity |
63%
Level 2: 60%+
NEET - 2020
Hints
Hints
Identify the correct statements from the following:
| (a) | \(\mathrm{CO}_2(\mathrm{~g})\) is used as a refrigerant ice cream and frozen food. |
| (b) | The structure of \(\mathrm{C}_{60} \) customs12 six carbon rings and 25 five carbon rings |
| (c) | ZSM-5, a type of zeolite, is used to convert alcohol into gasoline. |
| (d) | CO is a colorless and odorless gas. |
| 1. | (a) and (c) only | 2. | (b) and (c) only |
| 3. | (c) and (d) only | 4. | (a), (c) and (d) only |
Subtopic: Carbon Family - Preparations, Properties & Uses | Compounds of Carbon, Preparations, Properties & Uses |
54%
Level 3: 35%-60%
NEET - 2020
Hints
Which of the following alkenes, on ozonolysis, yields methanal (HCHO) as one of the products?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
86%
Level 1: 80%+
NEET - 2020
Hints
A reaction between acetone and methylmagnesium chloride followed by hydrolysis will give:
| 1. | sec-Butyl alcohol | 2. | tert-Butyl alcohol |
| 3. | iso-Butyl alcohol | 4. | iso-Propyl alcohol |
Subtopic: Alcohols: Preparation & Properties |
73%
Level 2: 60%+
NEET - 2020
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Links
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