TN State Board Samacheer Kalvi Online Test for 11th Std - Chemistry - English - Surface Chemistry

Question 1 Of 10

Answer:

(iv) (i) (ii) (iii)

Question 2 Of 10

The coagulation values in millimoles per litre of the electrolytes used for the coagulation of AS2S3 are given below

III > II > I I > II > III I >III > II II > III > I

Question 3 Of 10

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

∆H increases ∆S increases ∆G increases ∆S decreases

Question 4 Of 10

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

It is not true, ferric chloride is a poison. It is true, Fe3+ ions coagulate blood which is a negatively charged sol It is not true; ferric chloride is ionic and gets into the blood stream. It is true, coagulation takes place because of formation of negatively charged sol with Cl–.

Question 5 Of 10

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

Nitroglycerine Cellulose acetate Glycoldinitrate Nitrocellulose

Question 6 Of 10

The most effective electrolyte for the coagulation of As2S3 Soils

NaCl Ba(NO3)2 K3[Fe(CN)6] AI2(SO4)3

Question 7 Of 10

Which one of the is not a surfactant?

CH3 – (CH2)15 – N – (CH3)2CH2Br CH3 – (CH2)15 – NH2 CH3 – (CH2)16 – CH2OSO2 – Na+ OHC – (CH2)14 – CH2 – COO–Na+

Question 8 Of 10

For freudlich isotherm a graph of log (frac{x}{m}) is plotted against log P. The slope of the line and its y – axis intercept respectively corresponds to

(1 / n), k log (1 / n), k (1 / n), log k log (1 / n), log k

Question 9 Of 10

Hair cream is …………..

gel emulsion solid sol sol.

Question 10 Of 10

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

Both magnitude and sign of the charge on the ion. Size of the ion alone the magnitude of the charge on the ion alone the sign of charge on the ion alone.

Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 11th Standard Chemistry - English Medium - Surface Chemistry

Samacheer Kalvi 11th Chemistry - Surface Chemistry - Book Back Questions in English Medium