Foam is a colloidal solution of:
1. Gaseous particles dispersed in gas
2. Gaseous particles dispersed in a liquid
3. Solid particles dispersed in a liquid
4. Solid particles dispersed in gas
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA liquid aerosol is a colloidal system of:
1. a liquid dispersed in a solid
2. a liquid dispersed in a gas
3. a gas dispersed in a liquid
4. a solid dispersed in a gas
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA negative catalyst or inhibitor is one:
1. which retards the rate of reaction
2. takes the reaction in forward direction
3. promotes the side reaction
4. None of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAlum helps in purifying water by:
1. Forming Si complex with clay particles.
2. Sulphate part which combines with the dirt and removes it.
3. Aluminium which coagulates the mud particles.
4. Making mud water soluble.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following does not form anionic micelle?
1. C12H25COONa
2. C12H25SO4Na
3. C12H25SO3Na
4. C12H25(NH3)3Cl
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMilk can be preserved by adding a few drops of?
1. Formic acid solution
2. Formaldehyde solution
3. Acetic acid solution
4. Acetaldehyde solution
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhen a catalyst is added to a system the:
1. equilibrium concentrations are increased
2. equilibrium concentrations are unchanged
3. the rate of forward reaction is increased and that of backward reaction is decreases
4. value of the equilibrium constant is decreased
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyClouds, mist, fog and aerosols are colloidal solution of:
1. solid in a gas
2. gas in a solid
3. liquid in a gas
4. gas in a liquid
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe index for the Gold number is:
1. Protective power of lyophilic colloid.
2. Purity of gold.
3. Metallic gold.
4. Electroplated gold.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
Silver iodide is used for producing artificial rain because AgI is:
1. Easy to spray at high altitudes.
2. Easy to synthesize.
3. Having crystal structure similar to ice.
4. Insoluble in water.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology