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NEET Practice Questions (MCQs) with Answers & Solutions

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Which method is is used to obtain sol of gold and silver ?

A. Electric dispersion B. Peptization C. Excessive cooling D. Mechanical dispersion

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Which one is used as semipermiable membranes in dialysis ?

Parchment paper

Plastic

Filter paper

Ultrafilter paper

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Phenomenon is called reverse to coagulation ?

A. Flocculation B. Tyndall C. Brownian D. Dialysis

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Which of the following is correct order of coagulations for the coagulation of $ As_2S_3 $ ?

A. $ Fe ^ {3+} \gt Ba ^ {2+} \gt Na ^ + $ B. $ Na ^ + \gt Ba ^ {2+ } \gt Fe ^ {3+} $ C. $ Fe ^ {3+} \gt Na ^ {2+} \gt Ba ^ {2+} $ D. $ Ba ^ {2+} \gt Na ^ + \gt Fe ^ {3+} $

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Which of the following substances contain negative charge in their colloidal solution ?

Arsenious sulphide

Platinum

Gold-Silver

All the given

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Which peptizing agent is used to obtain sol of $ Fe(OH)_3 $ ?

A. HCl B. $ FeCl_2 $ C. KCl D. $ FeCl_3 $

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By the use of which colligative property molecular mass of colloid can be determine ?

A. Decrease in vapour pressure B. Elevation in boiling point C. Depression infeezing point D. Osmotic pressure

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Which of the following is oil/water emulsion ?

A. Milk B. Vanishing cream C. Butter D. All the given

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Which of the following substance is used as stabilizer in emulsion ?

A. Protein B. Gum C. Agar D. All the given

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Tyndall effect is associated with which property of colloid ?

A. Mechanical B. Colligative C. Optical D. Electrical

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