What name is given to the placenta in which trophoblastic villi and walls of uterine vessels degenerate so that foetal capillaries are bathed in uterine blood?

Three closed rigid vessels, A, B and C, which initially contain three different gases at different temperatures are connected by tube of negligible volume, without any energy transfer with surroundings. The vessel A contain 2 mole Ne gas, at 300 K, vessel 'B' contain 2 mole SO_(2) gas at 400 K and vessel 'C' contain 3 mole CO_(2) gas at temperature 500 K. What is the final pressure (in atm) attained by gases when all valves of connecting three vessels are opened and additional 15.6 kcal hear supplied to vessels through valve. The volume of A, B and C vessel is 2, 2 and 3 litre respectively Given :R =2 calorie/mol-K, C_(v)(Ne)=3//2R,C_(v)(CO)=5//2R and C_(v)(SO_(2))=3R

In anaphylactic shock, a substance is released which causes dilation of blood vessel and capillary leaking. What is the substance called?

Two hundred students of 6th and 7th classes were asked to name their favourite colour so as to decide upon what should be the colour of their school building. The results are shown in the following table. Represent the given data on a bar graph. Answer the following questions with the help of the bar graph: Which is the most preferred colour and which is the least preferred?