In the given reaction sequence, the major product 'C' is :

Major product '$$\mathrm{B}$$' of the following reaction sequence is :

The major product in the given reaction is

Which among the following pairs of the structures will give different products on ozonolysis? (Consider the double bonds in the structures are rigid and not delocalized.)

Considering the above reactions, the compound 'A' and compound 'B' respectively are :

Compound 'A' undergoes following sequence of reactions to give compound 'B'. The correct structure and chirality of compound 'B' is [where Et is $$-{\mathrm{C}}_2{\mathrm{H}}_5]$$

For a first order reaction, the time required for completion of 90% reaction is 'x' times the half life of the reaction. The value of 'x' is (Given : ln 10 = 2.303 and log 2 = 0.3010)

At $$30^{\circ }\mathrm{C}$$, the half life for the decomposition of $${\mathrm{AB}}_2$$ is $$200\mathrm{s}$$ and is independent of the initial concentration of $${\mathrm{AB}}_2$$. The time required for $$80\%$$ of the $${\mathrm{AB}}_2$$ to decompose is Given: $$\log 2=0.30$$ $$\log 3=0.48$$

For kinetic study of the reaction of iodide ion with $${\mathrm{H}}_2{\mathrm{O}}_2$$ at room temperature : (A) Always use freshly prepared starch solution. (B) Always keep the concentration of sodium thiosulphate solution less than that of KI solution. (C) Record the time immediately after the appearance of blue colour. (D) Record the time immediately before the appearance of blue colour. (E) Always keep the concentration of sodium thiosulphate solution more than that of KI solution. Choose the correct answer from the options given below :

Which of the following is a correct statement?

A 42.12% (w/v) solution of NaCl causes precipitation of a certain sol in 10 hours. The coagulating value of NaCl for the sol in 2 hours is : [Given : Molar mass : Na = 23.0 g mol$$-$$1 ; Cl = 35.5 g mol$$-$$1]

Match List - I with List - II : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-c3ow{border-color:inherit;text-align:center;vertical-align:top} .tg .tg-0pky{border-color:inherit;text-align:left;vertical-align:top} List-I List-II (A) negatively charged sol (I) $$F{e}_2{O}_3.x{H}_{2}O$$ (B) macromolecular colloid (II) CdS sol (C) positively charged sol (III) Starch (D) Cheese (IV) a gel Choose the correct answer from the options given below:

The Zeta potential is related to which property of colloids?

Match List-I with List-II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-1wig{font-weight:bold;text-align:left;vertical-align:top} .tg .tg-0lax{text-align:left;vertical-align:top} List - I List - II (A) Lyophilic colloid (I) Liquid-liquid colloid (B) Emulsion (II) Protective colloid (C) Positively charged colloid (III) FeCl$${}_3$$ + NaOH (D) Negatively charged colloid (IV) FeCl$${}_3$$ + hot water Choose the correct answer from the options given below :

Incorrect statement for Tyndall effect is :

Using very little soap while washing clothes, does not serve the purpose of cleaning of clothes, because :

Given below are two statements : Statement I : Emulsions of oil in water are unstable and sometimes they separate into two layers on standing. Statement II : For stabilisation of an emulsion, excess of electrolyte is added. In the light of the above statements, choose the most appropriate answer from the options given below :

TLC analysis of a mixture having 3 components (A, B, C) using silica gel as the stationary phase gave following Rf values; for A = 0.72, B = 0.48, C = 0.20. Regarding the above observations, which one of the following statements is not correct for column chromatography of the mixture?

For micelle formation, which of the following statements are correct? A. Micelle formation is an exothermic process. B. Micelle formation is an endothermic process. C. The entropy change is positive. D. The entropy change is negative.

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Finest gold is red in colour, as the size of the particles increases, it appears purple then blue and finally gold. Reason R : The colour of the colloidal solution depends on the wavelength of light scattered by the dispersed particles. In the light of the above statements, choose the most appropriate answer from the options given below.