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NEET UG CHEMISTRY MCQ: SURFACE CHEMISTRY

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Which one is hydrophobic in nature?

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Correct option: B

Sulphur

Option B (Sulphur) is correct because it is water-repelling, unlike the other options which are water-attracting.

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A cationic colloidal electrolyte forms micelle at

10^{-3} \mathrm{M}

concentration in water. Its

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2 \times 10^{13}

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\mathrm{N}_{\mathrm{A}}=6 \times 10^{23}

. Graph between

\log \frac{{x}}{{m}}

\log {P}

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\theta=45^{\circ}

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0.5

\log {k}= 0.699,

the amount of solute adsorbed per

\mathrm{g}

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\log \;x/m\mathrm{ } \;vs.

\log \;P

is linear with a slope equal to : Most suitable salt which can be used for efficient clotting of blood will be The density of gold is

19\;\mathrm{g/c}{\mathrm{m}^3}

{1.9 \times {{10}^{ - 4}}\;\mathrm{g}}

of gold is dispersed in 1 L of water to give a sol having spherical gold particles of radius

10\;\mathrm{ }nm

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m{m^3}

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