- Keneitsino Lydia
- April 13, 2026
Avoid Common Mistakes: Soaps Detergents Dyes Sweeteners MCQs Class 12 With Answers
The topic of everyday chemistry is one of the most scoring sections in Class 12, and mastering it becomes easier through consistent practice. One of the most effective ways to revise this chapter is by focusing on Soaps detergents dyes sweeteners MCQs class 12 with answers, which helps aspirants build a strong conceptual foundation. By regularly solving Soaps detergents dyes sweeteners MCQs class 12 with answers, learners can improve both accuracy and speed.
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Soaps detergents dyes sweeteners MCQs class 12 with answers:
1. Hair dyes contain:
A. Copper nitrate
B. Gold chloride
C. Silver nitrate
D. Copper sulphate
Answer: c
2. Potassium soaps are:
A. Soft soaps
B. Hard soaps
C. Industrial soaps
D. All of these
Answer: a
3. Which among the following contains triglyceride?
A. Wax
B. Cooking oil
C. Essential oil
D. Albumin
Answer: b
4. Which of the following is not a chromophore?
A. –N=N–
B. –NO
C. –NO₂
D. –NH₂
Answer: d
5. Method for removal of temporary hardness:
A. Washing soda
B. Calgon method
C. Ion-exchange
D. Clark’s method
Answer: d
6. A micelle is:
A. Particle of soap
B. Aggregated soap + dirt
C. Dust particle
D. Dust + water
Answer: b
7. Formula of Calgon:
A. Na₄[Na₄(PO₃)₆]
B. Na₂[Na(PO₃)₄]
C. Na₂[Na₄(PO₃)₆]
D. Na₃[Na₂(PO₃)₄]
Answer: c
8. CMC of soap is:
A. 10⁻⁴ to 10⁻³
B. 10⁻² to 10⁻¹
C. 10⁻³ to 10⁻²
D. 10⁻⁵ to 10⁻²
Answer: a
9. Compound added to soap for antiseptic property:
(Refer given image options)
Answer: a
10. Used in detergents:
A. Sodium acetate
B. Sodium stearate
C. Calcium stearate
D. Sodium lauryl sulphate
Answer: d
11. Not under green chemistry:
A. Vegetable oil soaps
B. H₂O₂ bleaching
C. Liquid CO₂ cleaning
D. Plastic cans storage
Answer: d
12. Sodium rosinate is added to:
A. Prevent drying
B. Produce lather
C. Antiseptic
D. Perfume
Answer: b
13. Not an artificial sweetener:
A. Aspartame
B. Sucrose
C. Sucralose
D. Saccharin
Answer: b
14. Biodegradable detergents:
A. Cyclic chain
B. Short chain
C. Unbranched chain
D. Branched chain
Answer: c
15. Sweetener derived from sucrose:
A. Saccharine
B. Sucralose
C. Sucrobenzamide
D. Aspartame
Answer: b
16. Oil of wintergreen contains:
A. Aspirin
B. Salol
C. Methyl salicylate
D. Sodium phenate
Answer: c
17. Assertion–Reason (Detergents):
A. Both correct & explanation
B. Both correct, not explanation
C. A correct, R wrong
D. Both wrong
Answer: a
18. Detergents effective in hard water because:
A. Non-ionic
B. Insoluble salts
C. Soluble Ca²⁺/Mg²⁺ salts
D. Highly soluble
Answer: c
19. p-Hydroxyazobenzene is:
A. Orange dye
B. Yellow dye
C. Red dye
D. Orange-red dye
Answer: a
20. Azo dye is:
A. Alizarin
B. Martius yellow
C. Magenta
D. Congo red
Answer: d
21. Fluorescein is:
A. Azo dye
B. Phthalein dye
C. Triphenyl methane
D. Nitro dye
Answer: b
22. Alizarin is:
A. Azo dye
B. Anthraquinone dye
C. Phthalein dye
D. Triphenyl methane dye
Answer: b
23. Soap is salt of:
A. Stearic acid
B. Oleic acid
C. Palmitic acid
D. All of these
Answer: d
24. Which is a soap?
A. Sodium acetate
B. Magnesium butyrate
C. Sodium palmitate
D. Palmitic acid
Answer: c
25. Food preservative is:
A. Sodium benzoate
B. Potassium chloride
C. Sodium bicarbonate
D. Both B & C
Answer: a
26. 2,4-D is used as:
A. Fungicide
B. Insecticide
C. Herbicide
D. Moth repellent
Answer: c
27. Not an antacid:
A. Phenelzine
B. Ranitidine
C. Aluminium hydroxide
D. Cimetidine
Answer: a
28. CTAB is:
A. Anionic detergent
B. Cationic detergent
C. Non-ionic detergent
D. Sweetener
Answer: b
29. Glycerol in soap is used to:
A. Filler
B. Increase lather
C. Prevent drying
D. Antiseptic
Answer: c
30. Not used in dry cleaning:
A. H₂O₂
B. CCl₄
C. Liquid CO₂
D. Cl₂C=CCl₂
Answer: d
