Nutrition in Animals — Science STD 7 — Question

What causes eclipses, day and night?

A food stall owner was preparing dough for making bhaturas. He added a pinch of yeast and sugar to the dough and left it in a warm place. After few hours, the dough had risen. There was a sour smell too. What would have happened if the dough was kept in the refrigerator, soon after it was prepared?

A food stall owner was preparing dough for making bhaturas. He added a pinch of yeast and sugar to the dough and left it in a warm place. After few hours, the dough had risen. There was a sour smell too. Why was sugar added to the dough?

Shine light from the torch placed at 1.5 m , on the globe in a dark room and record your observation. State how day and night occur on the earth due to its rotation on the basis of your observation.

How does red rose extract act as an indicator?

Why is it important to have nutritious diet for adolescents?

Think and suggest some ways to minimise waste and pollutants at their source, taking your home as an example

When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.

Why is vegetative propagation a preferred method of asexual reproduction?