निम्नलिखित में से किस कोलाइडी प्रणाली में परिक्षिप्त प्रावस्था (dispersed phase) और परिक्षेपण माध्यम (dispersion medium) दोनों एक ही भौतिक अवस्था (द्रव) में होते हैं?

Consider the following information regarding types of mixtures and colloids: 1. Smoke — Colloid — Gas in solid2. Milk — Emulsion — Homogeneous3. Pumice stone — Foam — Heterogeneous In how many of the above rows is the given information correctly matched?

Which of the following statements are NOT the properties of a colloid? A. A colloid is a homogeneous mixture. B. The size of particles of a colloid is too small to be individually seen by naked eyes. C. Colloids are big enough to scatter a beam of light passing through it (Tyndall effect). D. Colloidal particles settle down when left undisturbed. Choose the correct answer from the options given below: