PPSC Chemistry Lecturer Preparation (Test # 24)- Malik Xufyan 03137355727

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PPSC CHEMISTRY CLASS
Test Session
CH: Chromatography
Test # 24
For more WhatsApp # 0313-7355727
Topics:
1- Detergents
2- Pesticides
3. Dyes
4. Pigments
5. Cosmetics
Detergents
1. Detergents are synthetic soaps like cleansing agents and are also known as
____________
a) Artifacts
b) Detritus
c) Syndets
d) Collagen
2. Which of the following is also known as invert detergents?
a) Anionic detergents
b) Cationic detergents
c) Non-ionic detergents
d) All detergents comes in the category of invert detergents
3. Which of the following is an example of non-ionic detergent?
a) Alkyltrimethyl ammonium chloride
b) Sodium salts of alkyl sulphates
c) Sodium salts of alkyl benzene sulphonic acids
d) Polyethers
4. Which of the following is an example of cationic detergent?
a) Alkyltrimethyl ammonium chloride

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b) Sodium salts of alkyl sulphates
c) Sodium salts of alkyl benzene sulphonic acids
d) Polyethers
View Answer
5. The detergents which bear negative charge at the soluble end of the chain are called
anionic detergents.
a) True
b) False
View Answer
6. If the carbon chain is highly branched, the corresponding detergent will be
____________
a) Soft and biodegradable
b) Soft and non-biodegradable
c) Hard and biodegradable
d) Hard and non-biodegradable
7. If the carbon chain is linear, the corresponding detergent will be ____________
a) Soft and non-biodegradable
b) Soft and biodegradable
c) Hard and biodegradable
d) Hard and non-biodegradable
8. The % weight of detergent in washing powders is ____________
a) 5 – 10
b) 50 – 70
c) 15 – 30
d) 30 – 45
9. Which of the following chemical is added in washing powder for keeping the dirt
suspended in water?
a) Sodium silicate
b) Inorganic phosphate
c) Carboxy-methyl cellulose
d) Sodium perborate
10. Which of the following chemical is added in washing powder for keeping it dry?
a) Sodium silicate

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b) Inorganic phosphate
c) Carboxy-methyl cellulose
d) Sodium perborate
Dyes
11. The blue print process involves the use of
(a) Indigo dyes
(b) Vat dyes
(c) Iron compounds
(d) Zinc compounds
12. An azo dye is formed by interaction of an aromatic diazonium chloride with
(a) A phenol
(b) An aliphatic primary amine
(c) Benzene
(d) Nitrous acid
13. Alizarin belongs to the class of
(a) Vat dyes
(b) Mordant dyes
c) Substantive dyes
(d) Reactive dyes
14. Which of the following is dye
(a) Methyl orange
(b) Orange I
(c) Aniline yellow
(d) All of these
15. Which of the following is an example of basic dye
(a) Alizarin
(b) Malachite green
(c) Indigo
(d) Orange I
16. Which of the following is a direct dye
(a) Phenolphthalein
(b) Congo red

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(c) Alizarin
(d) Indigo
17. Which one is disperse dye
(a) Congo red
(b) Alizarin
(c) Celliton
(d) None of these
18. Malachite green is a direct dye for silk and wool. It is prepared by condensing
(a) Benzaldehyde and dimethyl aniline
(b) Carbonyl chloride and dimethyl aniline
(c) Benzene diazonium chloride with dimethyl aniline
(d) None of the above
19. Fluorescin, a well known dye is obtained by the reactions of
(a) Phthalic anhydride and phenol
(b) Phthalic anhydride and resorcinol
(c) Succinic acid and resorcinol
(d) Phthalic anhydride and catechol
20. Identify the wrong statement regarding alizarin
(a) Alizarin was extracted from the roots of the madder plant
(b) It's chemical name is 1, 2-dihydroxy anthraquinone
(c) It is fixed to fabrics by using mordants like aluminium sulphate
giving fast red colour
(d) It has red crystal soluble in alkalies and the solution imparts red colour to fabrics
21. Methyl orange is an indicator in acid-alkali titration. It gives
(a) Yellow colour in alkaline medium
(b) Red colour in acid medium
(c) Yellow colour in acid medium
(d) Yellow colour in alkaline medium and red colour in acid medium
22. A dye imparts red colour on fabric. What colour of light was absorbed by the dye

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(a) Blue
(b) Red(c) Green
(d) Orange
23. Which of the following is an azo dye
(a) Orange-I
(b) Phenolphthalein
(c) Malachite green
(d) Methylene blue
24. An example of anthraquinone dye is
(a) Alizarin
(b) Basic acid
(c) Methylene blue
(d) Phenolphthalein
25. Which of the following is a basic dyes
a) Congo Red
b) Aniline Yellow
c) Alizarin
d) Indigo
Pigments
26. Who first discovered chloroplast?
a) J Rhodin
b) Robert Porter
c) Camillo Golgi
d) Konstantin Mereschkowski
View Answer
27. What is the diameter of a chloroplast?
a) 1 – 2 micrometer
b) 2 – 4 micrometer
c) 4 – 6 micrometer
d) 6 – 10 micrometer
28. The mass of chloroplast DNA is __________
a) 10 – 15 million daltons

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b) 50 – 100 million daltons
c) 80 – 130 million daltons
d) 25 – 125 million daltons
29. The number of chloroplasts found in Arabidopsis thaliana is _____________
a) 100
b) 150
c) 50
d) 200
30. Identify A and B from the below figure.
cell-biology-questions-answers-chloroplast-photosynthetic-pigments-q5
a) A – Lumen; B – Thylakoids
b) A – Thylakoids; B – Lumen
c) A – Stroma; B – Grana
d) A – Grana; B – Stroma
31. The sunlight is captured by the membrane of thylakoids.
a) True
b) False
32. Which pigment is responsible for the process of sunlight?
a) Chlorophyll a
b) Chlorophyll b
c) Xanthophyll
d) Anthocyanin
33. Which pigment constitutes majorly in absorbing sunlight for photosynthesis?
a) Chlorophyll a
b) Chlorophyll b
c) Xanthophyll
d) Anthocyanin
34. Which of the following organisms has photosynthetic pigments in it?
a) Yeast
b) Nitrosomonas
c) Spirulina
d) Phosphobacter
35. What is the chemical formula of chlorophyll a?
a) C45H72MgN4O5

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b) C55H72MgN4O5
c) C55H72MnN4O5
d) C45H72MnN4O5
36. Chloroplast divide by binary fission.
a) True
b) False
37. What disease is caused by the dysfunction of chloroplast?
a) Leaf spot
b) Blight spot
c) Leaf variegation
d) Powdery mildew
Cosmetics
38. An agent used to clean the surface of teeth and there by decrease the tooth decay,
mouth odor is
a. Abrasive
b. Dentifrice
c. Dental paste
d. Dental cone
39. Surfactants are incorporated in the preparation of Dentifrice as they
a. Aid in preparation of surface flm
b. Produce foam
c. Removes debris
d. All the above
40. Zinc pyrithine in shampoo is used as
a. Conditioner
b. Cleansing
c. Antidandruff agent
d. Detergent
41. The spreadability of cold cream is increased by
b. Ozokerite
c. Vegetable oil

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d. Isopropyl myristate
42. Titanium dioxide commonly used in
a. Vanishing cream
b. Sunscreen Cream
c. Ophthalmic Cream
d. Aqueous calamine cream
43. Vanishing Cream is an ointment that may be classiffied as
a. Water soluble base
b. Oleaginous base
c. Absorption base
d. Emulsion base
44. Vanishing creams are called so because
a. They disappear during formulation mix
b. They vanish during removal from skin surface
c. They disappear after rubbing application
d. None of the above
45. The most frequently used surfactant in shampoo are
a. Anionic
b. Cationic
c. Non-ionic
d. All