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SURFACE CHEMISTRY - 05
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Q1. If dispersed phase is a liquid and the dispersion medium isa solid, the colloid is known as
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1 point
A foam
A gel
A sol
An emulsion
Q2. Hair cream is an example of
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Gel
Sol
Foam
Aerosol
Q3. Which one of the following is correctly matched?
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1 point
Emulsion-smoke
Aerosol-hair cream
Sol-whipped cream
Gel-butter
Q4. Which one of the following in not a colloidal solution?
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Ink
Blood
Milk
Air
Q5. Small liquid droplets dispersed in another liquid is called
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Foam
Emulsions
Sol
Gel
Q6. Which one is a colloid?
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Blood
Cane Sugar
Sodium Chloride
Urea
Q7. Suspensions are
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Invisible through microscope
Visible to naked eye
Not visible by any means
Invisible under electron microscope
Q8. A colloid always
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Contains two phases
Contains only water soluble particles
Contains three phases
Is a true solution
Q9. At the critical micelle concentration (CMC) the surfactant molecules
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Become completely soluble
Dissociate
Associate
Decompose
Q10. How non-polar and polar part in micelle are arranged ?
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Polar at outer surface and non-polar at inner surface
Distributed all over the surface
Polar at inner surface and non-polar at outer surface
Both polar and non-polar at inner surface
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