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NEET Practice Questions (MCQs) with Answers & Solutions

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Which of the following is reversible sol ?

A. Cellulose C. Mist D. Gelatin

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Which type of sol sulphar is ? $ Na ^+ \gt Ba ^ {2+} \gt Fe ^ {2+} $

A. Molecular colloid B. Micelle C. Associated colloid D. Macromolecular colloid

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Which of the following is macromolecular colloid ?

Artificial rubber

Plastic

Nylon

All the given

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What is called to that temperature at which the formation of micelle takes place ?

A. Zero temperature B. Kraff temperature C. Kelvin temperature D. Absolute temperature

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At which condition micelle is formed ?

A. At concentration higher then critical micelle concentration and lower then kraft temperature. B. At concentration higher then critical micelle concentration and higher then kraft temperature C. At concentration lower then critical micelle concentration and lower then kraft temperature. D. At concentration lower then critical micelle concentration and higher then kraft temperature

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What is approximate value of CMC for saap ?

A. $ 10 ^ {-9} M to 10 ^ 4 M $ B. $ 10 ^ {-3} M to 10 ^ {-4} M $ C. $ 10 ^ {-9} M to 10 ^ {-14 } M $ D. $ 10 ^ {3} M to 10 ^ 5 M $

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Which of the following is physical method for the preparation of collodiad sol ?

A. coagulation B. peptization C. fusion D. excessive cooling

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Which sol is formed due to hydrolysis of $ FeCl_3 $ ?

A. $ FeCl_2 $ B. $ Fe(OH)_2 $ C. $ Fe_2 O_3 $ D. $ Fe(OH)_3 $

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By which method $As_2S_3 sol can be obtain by the reaction between As_2O_3 and H_2S $ ?

A. Reduction B. Oxidation C. Hydrolysis D. Double decomposition

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In which of the following method condensation and dispersion are associated ?

A. Excessive cooling B. Hydrolysis C. Bredigâ€™s are D. Peptization

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