Consider the following statement: High early strength of cement is obtained as a result of 1. fine grinding. 2. decreasing the lime content 3. burning at higher temperatures 4. increasing the quantity of gypsum. Of these statements :
A prismatic beam is shown in the figure. Consider the following statements : 1. The structure is unstable. 2. The bending moment is zero at supports and internal hinge. 3. It is mechanism. 4. It is statically indeterminate. Which of the statements given above is/are correct ?