D. A true solution (e.g., salt water or sugar water)
15.
What is a colloidal solution (colloid) and what is its particle size?
A.
A true solution where particles are less than 1 nm
B.
A compound where two elements are chemically bonded
C.
A heterogeneous mixture in which solute-like particles (1–100 nm) are distributed throughout the medium without settling — appears homogeneous but is actually heterogeneous
D.
A suspension where particles exceed 1000 nm and settle on standing
C. A heterogeneous mixture in which solute-like particles (1–100 nm) are distributed throughout the medium without settling — appears homogeneous but is actually heterogeneous
16.
Which of the following is the correct list of colloids mentioned in NCERT Class 9?
