Surface chemistry practice · Mixed difficulty

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Practice format and chapter quiz

These sets use single-correct-answer MCQs. They do not cover every JEE Main or JEE Advanced question format and are not full-length mock papers.

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Showing 211-213 of 213 questions

211 Easy

211 of 213

Remembering +4 | -1

Lock- key fit theory is for

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Correct option: C

Enzyme action

Option C (Enzyme action) is correct because the lock-and-key model describes the specific interaction between an enzyme and its substrate, where the enzyme's active site is shaped to fit a specific substrate.

212 Easy

212 of 213

Understanding +4 | -1

Blue colour of water in sea is due to

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Correct option: C

Scattering of light by water

Option C (Scattering of light by water) is correct because the blue color of the sea is due to the scattering of blue light by water molecules, a phenomenon known as Rayleigh scattering.

213 Medium

213 of 213

Application +4 | -1

The coagulation of

10\;\mathrm{c}{\mathrm{m}^3}

of gold sol is completely prevented by addition of

0.025\;\mathrm{g}

of starch to it. The gold number of starch is

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Correct option: D

Option D (25) is correct because the gold number is defined as the amount of protective colloid in milligrams required to prevent coagulation of 10 cm³ of gold sol.

Revision notes and key takeaways

Review SURFACE CHEMISTRY in your textbook or class notes, then use this set to check your understanding.

Showing 211-213 of 213 questions

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