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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Which amine gives the carbylamine test?

1.    2.   
3.    4.   
Subtopic:  Identification of Primary, Secondary & Tertiary Amines |
 87%
Level 1: 80%+
NEET - 2020
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Identify the incorrect statement regarding the halogens:
1. All form monobasic oxyacids.
2. All are oxidizing agents.
3. All but fluorine show positive oxidation states.
4. Chlorine has the highest electron-gain enthalpy.
Subtopic:  Group 17 - Preparation, Properties & Uses |
Level 4: Below 35%
NEET - 2018
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Which of the following is produced when anisole reacts with HI?

1.  2.
3. 4.
Subtopic:  Ethers: Preparation & Properties, Uses |
 83%
Level 1: 80%+
NEET - 2020
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The number of protons, neutrons and electrons in  \( _{71}^{175}Lu\) respectively, are:

1. 104, 71 and 71

2. 71, 71 and 104

3. 175, 104 and 71

4. 71, 104 and 71

Subtopic:  Introduction of Atomic Structure | Number of Electron, Proton & Neutron |
 82%
Level 1: 80%+
NEET - 2020
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Hydrolysis of sucrose is given by the following reaction

Sucrose + H2O ⇌ Glucose + Fructose

If the equilibrium constant (Kc) is 2×1013 at 300 K, the value of ∆rG⊝ at the same temperature will be:

1. 8.314 J mol–1 K–1×300 K×ln (2×1013)

2. 8.314 J mol–1 K–1×300 K×ln (3×1013)

3. –8.314 J mol–1 K–1×300 K×ln (4×1013)

4. –8.314 J mol–1 K–1×300 K×ln (2×1013)

Subtopic:  Gibbs Energy Change |
 81%
Level 1: 80%+
NEET - 2020
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Find the quantity that increases when the concentration of reactants in a reaction is increased.

1. Heat of reaction 2. Threshold energy
3. Collision frequency 4. Activation energy
Subtopic:  Arrhenius Equation |
 64%
Level 2: 60%+
NEET - 2020
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Which of the following set of reactants produces Anisole?

1. CH3CHO ; RMgX

2. C6H5OH ; NaOH ; CH3l

3. C6H5OH ; neutral FeCl3

4. C6H5 - CH3 ; CH3COCl ; AlCl3

Subtopic:  Ethers: Preparation & Properties, Uses |
 78%
Level 2: 60%+
AIPMT - 2014
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Given that the ionic product of NiOH2 is 2 × 10-15. The solubility of NiOH2 in 0.1 M NaOH is ;
1. 2 × 10-8 M

2. 1 × 10-13 M

3. 1 × 108 M 

4. 2 × 10-13 M
Subtopic:  Solubility Product |
 72%
Level 2: 60%+
NEET - 2020
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Which of the following statement(s) is/are correct about the elimination reaction of 2-Bromopentane to form pent-2-ene:
(a) β-Elimination reaction
(b) Follows Zaitsev rule
(c) Dehydrohalogenation reaction
(d) Dehydration reaction

1. (a), (c), (d) 2. (b), (c), (d)
3. (a), (b), (d) 4. (a), (b), (c)

Subtopic:  Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism | Aliphatic Hydrocarbon - Methods of Preparation |
 77%
Level 2: 60%+
NEET - 2020
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