<h2>Answer : Option D) Heterogeneous mixture</h2><h3>Explanation : </h3>
A mixture in which particles are not evenly distributed and particles keep their unique properties are called as heterogeneous mixture.
Usually, in heterogeneous mixture the substances are not evenly distributed and they can be easily separated through any physical methods. Also the components retains their original/unique properties in the mixture. It usually contains various particles from different substances that are not uniformly distributed throughout the mixture.
The more sunlight that is present, the better the oven will be able to produce electricity. This means that a solar oven will be more efficient on a sunny day than on a cloudy day. Also, depending on the time of day, if the solar panel is in shadow, the oven will greatly decrease in efficiency.
All acids contain OH in their formula