Which of the following is a cationic detergent?

1. Sodium stearate

2. Cetyl trimethyl ammonium bromide

3. Sodium dodecylbenzene sulphonate

4. Sodium lauryl sulfate

Subtopic:  Soaps & Detergents, Dyes & Propellant |
 75%
Level 2: 60%+
NEET - 2020
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The calculated spin-only magnetic moment of Cr2+ ion is:

1. 4.90 BM 2. 5.92 BM
3. 2.84 BM 4. 3.87 BM
Subtopic:  d-Block Elements- Properties & Uses |
 79%
Level 2: 60%+
NEET - 2020
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HCl was passed through a solution of CaCl2, MgCl2, and NaCl. Compound(s) that get crystallize is/are-

1. Only NaCl

2. Only MgCl2

3. NaCl, MgCl2, and CaCl2

4. Both MgCl2 and CaCl2

Subtopic:  Reasoning Questions |
 50%
Level 3: 35%-60%
NEET - 2020
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Match the following and identify the correct option

(a) CO(g)+H2(g) (i) Mg(HCO3)2+Ca(HCO3)2
(b) Temporary hardness of water (ii) An electron deficient hydride
(c) B2H6 (iii) Synthesis gas
(d) H2O2 (iv) Non-planar structure
 
(a) (b) (c) (d)
1. (iii) (ii) (i) (iv)
2. (iii) (iv) (ii) (i)
3. (i) (iii) (ii) (iv)
4. (iii) (i) (ii) (iv)
Subtopic:  Hard & Soft Water | H2O2 (Hydrogen Peroxide) |
 84%
Level 1: 80%+
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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The correct order of increasing field strength of ligands is:

1. SCN- < F- < CN- < C2O42-

2. F- < SCN- < C2O42- < CN-

3. CN- < C2O42- < SCN- < F-

4. SCN- < F- < C2O42- < CN-

Subtopic:  Ligands |
 57%
Level 3: 35%-60%
NEET - 2020
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The correct statement among the following is:

1. Blister copper has a blistered appearance due to the evolution of CO2.
2. Vapour phase refining is carried out for nickel by the Van Arkel method.
3. Pig iron can be moulded into a variety of shapes.
4. Wrought iron is impure iron with 4 % carbon.

Subtopic:  Refining Process |
 60%
Level 2: 60%+
NEET - 2020
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Sucrose on hydrolysis gives:

1. α-D-Glucose + β-D-Glucose

2. α-D-Glucose + β-D-Fructose

3. α-D-Fructose + β-D-Fructose

4. β-D-Glucose + α-D-Fructose

Subtopic:  Polysaccharides & their Importance |
 87%
Level 1: 80%+
NEET - 2020
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What is the alteration in the oxidation state of carbon in the given reaction?

\(\mathrm{{CH_4}_{(g)} + 4{Cl_2}_{(g)} \rightarrow {CCl_4}_{(l)} + 4 HCl_{(g)}}\)

1. 0 to +4 2. –4 to +4
3. 0 to –4 4. +4 to +4
Subtopic:  Oxidizing & Reducing Agents |
 83%
Level 1: 80%+
NEET - 2020
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Which of the following metal ions activates many enzymes participating in the oxidation of glucose to produce ATP and with Na it is also responsible for the transmission of nerve signals:

1. Copper

2. Calcium

3. Potassium

4. Iron

Subtopic:  Vitamins, Hormones & Enzymes |
 68%
Level 2: 60%+
NEET - 2020
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