Write stress-strain curve for a metal. What is proportional limit and yield point ?

Write the answer of each the question: What is the name of horizontal line and vertical lines drawn to determine the position of any point in the cartesian plane ?

Write the answer of each the question: What is the name of horizontal line and vertical lines drawn to determine the position of any point in the cartesian plane ?

Draw Stress - Strain curve. Show Yield point and Fracture point.

Write two points of dillerence between electric energy and electric power Out of 60W and 40W lamps which one has higher elecrieal resistance when in use. What is the commerical unit of electric energy? Convert it into joules.

If the length of the sub-tanget at any point to the curve xy^(n) = a is proportional to the abscissa, then 'n' is

(a) Write any four factors that influence population density. (b) Draw a graph showing exponential growth curve. What is sexual deceit?

Write one example of each of the following : (i) Most malleable metal and most ductile metals. The best condcutor of heat and the poorest conductor of heat. (iii) A metal with highest melting point and a metal with lowest melting point.

(a) In extraction of Aluminium by electrolysis, (i) Write ovreall cell reaction. (ii) What is the role of cryolite? (b) Name the metal refined by Mond's process.

a. Write the balanced chemical equations for the extraction of copper metal from its ore. What is the reducing agent used? b. What is the chemical formed as green coating when copper reacts with atmospheric gases in moist conditions?