In a bakery baking powder was not added while preparing cake . The cake obtained was hard and small in size what is the reason for this ?

Baking powder I used for baking. If your mother uses baking soda instead. (a) will It affect the taste of the cake ? How ? Why ? (b) How can baking soda be converted into baking powder ? (c ) What is the role of tartaric acid added to baking soda ?

A white powder is added while baking bread and cakes to make them soft and fluffy. Write the name of the powder. Name its main ingredients. Explain the function of each ingredient. Write the chemical reaciton taking place when the powder is heated.

What happens when a solution of baking soda is heated? Write chemical equation for the same. Name the product which is reponsible for making the bread or cake spongy and fluffy.

A small candle, 2.5 cm in size is placed at 27 cm in front of a concave mirror of radius of curvature 36 cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image? Describe the nature and size of the image. If the candle is moved closer to the mirror, how would the screen have to be moved?