MCQs on Surface Chemistry Part-1

Objective Type Questions for Surface Chemistry

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Please refer to these multiple-choice questions on Surface Chemistry.

Find answers at end of this page.

Q1 In Zeiglar natta polymerization of Ethene the active species is 

• (a)AlCl₃
• (b) Et₃Al
• (c) C₂H₄
• (d)   Ti(III)

(a) It forms a complex with impurities   

(b) makes mud water-soluble   

(c)  Sulphate part coagulates mud   

(d)  Al³⁺ coagulates mud particles

Q3  The simplest way to distinguish b/w true solutions and colloids

• (a) Tyndall Effect
• (b)  Electrophoresis
• (c)  Peptisation
• (d) none

Q4  In case of autocatalysis

• (a) Product act as a catalyst
• (b) Reactant catalyzes
• (c) Heat of reaction catalyzes
• (d) Solvent catalyses

Q5Which of the following is correctly matched

• Emulsion – Curd
• (b)  Foam- Mist
• (c) Solid Sol – Cake
• (d)  Aerosol- Smoke

Q6 Concentration of electrolyte required to coagulate a given amount of arsenic sulphide sol is minimum in case of 

• (a) K₂SO₄
• (b)  Al(NO₃)₃
• (c)  Mg(NO₃)₂
• (d)   KNO₃

Q7  Colloidal solution of gold prepared by different methods have different colours because  

• (a) Au show variable valency
• (b)  Different sizes of colloidal gold particles
• (c)  Due to impurities present
• (d) Due to solvent

Q8  Electrical disintegration method (Bredig Arc Method)  used for the preparation of Gold sol involves 

• (a) Electrolysis
• (b) Micells
• (c) Coagulation
• (d)  Dispersion as well as Condensation

Q9 Which act as autocatalyst during titration of KMnO₄ and  Oxalic acid in acidic medium

• (a) Sulphuric acid
• (b)    KMnO₄
• (c)  Oxalic Acid
• (d)  MnSO₄

Q10 Which of the following does not involve coagulation

• (a) Formation of deltas
• (b)  Peptization
• (c)  Treatment of drinking water
• (d)  Clotting of blood by Ferric Chloride

Q11  The formation of Micells takes place only above  

• (a) Inversion temperature
• (b)  Boyles temperature
• (c) Kraft temperature
• (d) Wein temperature

Q12  Cetyl trimethyl ammonium bromide is a popular

(a) Anionic detergent        

(b) Cationic detergent  

(c)  Non Ionic detergent  

(d)  None of these

Q13  The function of Gum Arabic in preparation of Indian Ink is 

• (a) Coagulation
• (b)  Peptisation
• (c)  Protective action
• (d) adsorbent

Q14 STEM stands for  

(a) Scanning Tunneling Electron Microscope  

(b)  Scanning transmission electron microscope  

(c) both  

(d)  none

Q15 The mismatch is  

(a) [RhCl(PPh₃)₃] – Hydrogenation   

(b)Ni – Reduction  

(c)  TiCl₄ + Et₃Al – Polymerization  

(d) N₂O₅ — Haber bosch process 

Answers

1	d
2	d
3	a
4	a
5	d
6	b
7	b
8	d
9	d
10	b
11	C
12	b
13	a
14	c
15	d