What is the first milk which comes out from the mammary glands of the mother just after child birth?

Which hormone stimulates the growth of mammary gland and secretion of milk after child birth ?

A hollow sphere filled with water is hanging by a thread. As water slowly comes out from narrow orifice at the bottom what happens to it's time period, Explain.

The yellow coloured milk secreted by mother just after childbirth is called ul("neonatal milk") .

Which term describes the period from conception till child birth ?

A company has two plants to manufacture motorcycles. 70% motorcycles are manufactured at the first plant, while 30% are manufactured at the second plant. At the first plant, 80% motorcycles are rated of standard quality, while at the second plant, 90% are rated of standard quality. A motorcycle, randomly picked up, is found to be standard quality. Find the probability that it has come out from the second plant.

(i) Write the balanced equations to represent what happens when (a) acidified potassium permanganates reacts with hydrogen sulphide ? (b) acidified potassium dichromate solution reacts with iron (II) solution (ionic equation) ? (ii) The figure given below illustrates the first ionisation enthalpies of first, second and third series of transition elements. (a) Which series amongst the first, second and third series of transition elements have the highest first ionisation enthalpy and Why ? (b) Why there is a fall in IE_(2) from Cr to Mn and from Cu to Zn ? Explain.