Question

Match the following:
$\begin{array}{cc}1.Chemicalchange& i.Water\\ 2.Physicalchange& ii.Sugarinwater\\ 3.Puresubstance& iii.Cookingfood\\ 4.Homogeneousmixture& iv.Meltingofice\end{array}$

• A. 1.- iii, 2.- i, 3.- iv, 4.- ii.
• B. 1.- ii, 2.- iv, 3.- iii, 4.- i.
• C. 1.- iii, 2.- i, 3.- iv, 4.- ii.
• D. 1.- iii, 2.- iv, 3.- i, 4.- ii.

Answer 1

The correct option is D

1.- iii, 2.- iv, 3.- i, 4.- ii.

When food is cooked, its chemical nature changes. Hence, it is a chemical change. When ice melts, no new substance is formed. Hence, it is a physical change. Water is a pure substance. The proportion of the constituents of a sugar solution in water is constant, hence it is a homogenous mixture.