Clouds, 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 & BiologyWhat is the index for the Gold number?
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 & BiologyWhich is an emulsion?
1. Boot polish
2. Lipstick
3. Shampoo
4. All of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyEgg albumin is:
1. reversible colloid
2. lyophilic colloid
3. protective colloid
4. all of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe active species in Zeigler-Natta polymerisation of ethylene is:
1. AlCl3
2. Et3Al
3. H2C=CH2
4. Ti+3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe gas that is adsorbed strongly by charcoal is:
1. CO2
2. N2
3. H2
4. NH3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA small amount of phosphoric acid can be used to prevent H2O2 decomposition. This an example of?
1. Neutralization
2. Negative catalysis
3. Positive catalysis
4. Catalytic poisoning
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich ion is adsorbed when a diluted aqueous solution of AgNO3 (excess) is added to KI solution, resulting in formation of positively charged sol particles of AgI?
1. K+
2. Ag+
3. I-
4. NO3-
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMilk contains a protein that is very good for health. The protein is:
1. caffeine
2. calciferol
3. keratin
4. casein
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology