Surface Chemistry Book Back Practice Test

12th Standard Chemistry — Surface Chemistry: Book Back Online Practice Test

Pick how many questions you want and set a time limit, then start. You'll get your score at the end with the correct answer and an explanation for every question. Free, in Tamil and English — 19 questions available.

Set up your test

Number of questions

Time limit

Time remaining00:00

Which of the following is incorrect for physisorption?

A.reversible B.increases with increase in temperature C.low heat of adsorption D.increases with increase in surface area

Which one of the following characteristics are associated with adsorption?

A.\(\Delta G\) and \(\Delta H\) are negative but \(\Delta S\) is positive B.\(\Delta G\) and \(\Delta S\) are negative but \(\Delta H\) is positive C.\(\Delta G\) is negative but \(\Delta H\) and \(\Delta S\) are positive D.\(\Delta G\), \(\Delta H\) and \(\Delta S\) all are negative.

Fog is colloidal solution of

A.solid in gas B.gas in gas C.liquid in gas D.gas in liquid

Assertion : Coagulation power of \(Al^{3+}\) is more than \(Na^+\). Reason : greater the valency of the flocculating ion added, greater is its power to cause precipitation

A.if both assertion and reason are true and reason is the correct explanation of assertion. B.if both assertion and reason are true but reason is not the correct explanation of assertion. C.assertion is true but reason is false D.both assertion and reason are false.

Statement : To stop bleeding from an injury, ferric chloride can be applied. Which comment about the statement is justified?

A.It is not true, ferric chloride is a poison. B.It is true, \(Fe^{3+}\) ions coagulate blood which is a negatively charged sol C.It is not true; ferric chloride is ionic and gets into the blood stream. D.It is true, coagulation takes place because of formation of negatively charged sol with \(Cl^-\).

Hair cream is

A.gel B.emulsion C.solid sol D.sol

Which one of the following is correctly matched?

A.Emulsion – Smoke B.Gel – butter C.foam – Mist D.whipped cream – sol

The most effective electrolyte for the coagulation of \(As_2S_3\) Sol is

A.\(NaCl\) B.\(Ba(NO_3)_2\) C.\(K_3[Fe(CN)_6]\) D.\(Al_2(SO_4)_3\)

Which one of the is not a surfactant?

A.\(CH_3 (CH_2)_{15} N (CH_3)_2 CH_2Br\) B.\(CH_3 (CH_2)_{15} NH_2\) C.\(CH_3 (CH_2)_{14} CH_2 COONa\) D.\(CH_3 (CH_2)_{15} SO_2 Na\)

Q10

The phenomenon observed when a beam of light is passed through a colloidal solution is

A.Cataphoresis B.Electrophoresis C.Coagulation D.Tyndall effect

Q11

In an electrical field, the particles of a colloidal system move towards cathode. The coagulation of the same sol is studied using \(K_{2}SO_{4}\) (i), \(Na_{3}PO_{4}\) (ii), \(K_{4}[Fe(CN)_{6}]\) (iii) and \(NaCl\) (iv). Their coagulating power should be

A.II > I > IV > III B.III > II > I > IV C.I > II > III > IV D.none of these

Q12

Collodion is a 4% solution of which one of the following compounds in alcohol – ether mixture?

A.Nitroglycerine B.Cellulose acetate C.Glycoldinitrate D.Nitrocellulose

Q13

Which one of the following is an example for homogeneous catalysis?

A.manufacture of ammonia by Haber’s process B.manufacture of sulphuric acid by contact process C.hydrogenation of oil D.Hydrolysis of sucrose in presence of dil HCl

Q14

Match the following A) \(V_{2}O_{5}\) i) High density polyethylene B) Ziegler – Natta ii) PAN C) Peroxide iii) \(NH_{3}\) D) Finely divided Fe iv) \(H_{2}SO_{4}\)

A.(iv) (i) (ii) (iii) B.(i) (ii) (iv) (iii) C.(ii) (iii) (iv) (i) D.(iii) (iv) (ii) (i)

Q15

The coagulation values in millimoles per litre of the electrolytes used for the coagulation of \(As_{2}S_{3}\) are given below: (I) (NaCl) = 52 (II) (\(BaCl_{2}\)) = 0.692 (III) (\(MgSO_{4}\)) = 0.224 The correct order of their coagulating power is

A.III > II > I B.I > II > III C.I > III > II D.II > III > I

Q16

Adsorption of a gas on solid metal surface is spontaneous and exothermic, then

A.\(\Delta H\) increases B.\(\Delta S\) increases C.\(\Delta G\) increases D.\(\Delta S\) decreases

Q17

If x is the amount of adsorbate and m is the amount of adsorbent, which of the following relations is not related to adsorption process?

A.x/m = f(P) at constant T B.x/m = f(T) at constant P C.P = f(T) at constant x/m D.x/m = PT

Q18

On which of the following properties does the coagulating power of an ion depend?

A.Both magnitude and sign of the charge on the ion. B.Size of the ion alone C.the magnitude of the charge on the ion alone D.the sign of charge on the ion alone.

Q19

Match the following A) Pure nitrogen i) Chlorine B) Haber process ii) Sulphuric acid C) Contact process iii) Ammonia D) Deacons Process iv) sodium azide (or) Barium azide

A.(i) (ii) (iii) (iv) B.(ii) (iv) (i) (iii) C.(iii) (iv) (ii) (i) D.(iv) (iii) (ii) (i)

More for this chapter

About this Surface Chemistry test

This free online practice test covers Surface Chemistry from the 12th Standard Chemistry (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

More chapters in Chemistry

View all