151. An electric transformer works through:
152. What is the SI unit of magnetic flux?
153. What is the name of the reaction that is induced when a structure is subjected to bending?
154. What is the most commonly used cement in the world?
Slag lime cements
155. Limestone is mainly composed of:
156. The region in a fluid in which the flow is rotating around an axis is called:
157. Nitrogen fertilizers are made from:
158. Natural gas primarily consists of:
159. Annealing is carried out to increase:
160. Chlorofluorocarbon is commonly known as: