Question

State two differences between clinical and laboratory

Give reasons:

(a)Why is a new quilt warmer than an old one?
(b) Why are the bottoms of cooking utensils often kept black

Write the chemical formulae of the following:

(i)Copper sulphate
(ii)Magnesium phosphate​

Answer 1

Answer:

these spaces traps air ,as air is a insulator they do not allow the body heat to escape and keep us warm. 2) black is a good conductor of heat and the bottom of the vessels are black because it helps to absorb more heat and thus help in cooking the food faster and top part is shinny so that minimum heat is lost.Such trapping of air is much better in a new quilt than old one . ... Give reason for the following (a) A new quilts is warmer than old one (b) a brass ... tray on a chilly day (c) the bottom of cooking utensil are often kept black.

Answer 2

These spaces traps air ,as air is a insulator they do not allow the body heat to escape and keep us warm. 2) black is a good conductor of heat and the bottom of the vessels are black because it helps to absorb more heat and thus help in cooking the food faster and top part is shinny so that minimum heat is lost.Such trapping of air is much better in a new quilt than old one . ... Give reason for the following (a) A new quilts is warmer than old one (b) a brass ... tray on a chilly day (c) the bottom of cooking utensil are often kept black.