Soaps & Detergents, Dyes & Propellant Recommended MCQs - 80 Questions Chemistry in Everyday Life (OLD NCERT) Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Q1:

Detergent that gets degraded by the action of bacteria are known as -

1. Non-biodegradable

2. Condensation

3. Biodegradable

4. Elastomers

Subtopic: Soaps & Detergents, Dyes & Propellant |

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Q2:

Synthetic detergents are better than soaps because:

1.	Synthetic detergents work both in soft water and hard water.
2.	Soaps work both in soft water and hard water.
3.	Synthetic detergents work only in hard water.
4.	Soaps work only in hard water.

Subtopic: Soaps & Detergents, Dyes & Propellant |

90%

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Q3:

A space rocket is propelled by:
1. An automobilic engine
2. Nuclear Engine
3. Steam Engine
4. Mixture of fuel and oxidiser called propellant

Subtopic: Soaps & Detergents, Dyes & Propellant |

87%

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Q4:

The chemical added to soaps to impart antiseptic properties is :

1. Salvarsan

2. Bithional

3. Paracetamol

4. Iodine

Subtopic: Soaps & Detergents, Dyes & Propellant |

83%

From NCERT

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Q5:

The correct statement among the following during the cleansing action of soaps is:

1.	Hydrophobic parts of the stearate ions attach themselves to the oil droplets.
2.	Hydrophilic parts of the stearate ions project outside the oil droplets.
3.	Hydrophilic parts of the stearate ions attach themselves to the oil droplets.
4.	Both (1) and (2)

Subtopic: Soaps & Detergents, Dyes & Propellant |

80%

From NCERT

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Q6:

Match the structures given in Column I with the type of detergents given in Column II.

Column I	Column II
A. CH₃(CH₂)₁₆COO(CH₂CH₂O)_n CH₂CH₂OH	1. Cationic detergent
B. C₁₇H₃₅COO⁻Na⁺	2. Anionic detergent
C. CH₃− (CH₂)₁₀CH₂ SO₃⁻Na⁺	3. Non-ionic detergent
D. $[]$ ${CH}_{3}$ $\|$ ${CH}_{3} {({CH}_{2})}_{15}$ $-$ $N$ $-$ ${CH}_{3}$ $\|$ ${CH}_{3} +$ ${Br}^{-}$	4. Soap

Choose the correct one:

	A	B	C	D
1.	3	2	4	1
2.	4	3	2	1
3.	3	4	2	1
4.	1	2	3	4

Subtopic: Soaps & Detergents, Dyes & Propellant |

72%

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Q7:

An anionic detergent among the following is/are:

1.	Sodium salts of sulphonated long-chain alcohols.
2.	Ester of stearic acid and polyethylene glycol.
3.	Quaternary ammonium salt of the amine with acetate ion.
4.	Sodium salts of sulphonated long-chain hydrocarbons.

1. a and b
2. a and c
3. a and d
4. b and d

Subtopic: Soaps & Detergents, Dyes & Propellant |

71%

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Q8:

Choose the correct statement:

1.	Detergents that can not be degraded by bacteria are called biodegradable detergents.
2.	Biodegradable detergents have straight hydrocarbon chains.
3.	Detergents that can be degraded by bacteria are called non-biodegradable detergents.
4.	Biodegradable detergents have highly branched hydrocarbon chains.

Subtopic: Soaps & Detergents, Dyes & Propellant |

71%

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Q9:

Soaps do not work in hard water because:

1.	Calcium and magnesium ions displace sodium or potassium from their salts and form insoluble calcium or magnesium salts of fatty acids.
2.	Sodium or potassium ions displace calcium and magnesium from their salts and form insoluble calcium or magnesium salts of fatty acids.
3.	Calcium and magnesium ions displace sodium or potassium from their salts and form insoluble sodium or potassium salts of fatty acids.
4.	None of the above.

Subtopic: Soaps & Detergents, Dyes & Propellant |

70%

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Q10:

The correct statement among the following is:

a.	Cationic detergents have germicidal properties.
b.	Bacteria can degrade the detergents containing highly branched chains.
c.	Some synthetic detergents can give foam even in ice-cold water.
d.	Synthetic detergents are not soaps.

1. a, c and d
2. a, b and c
3. b and c
4. c and d

Subtopic: Soaps & Detergents, Dyes & Propellant |

69%

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