Chapter to complete before starting 12

Fritz is taking an examination that consists of two parts , A and B , with the following instructions: Part A contains three questions, and a student must answer tow . Part B contains four questions, and a student must answer two. Part A must be completed before starting part B. How many ways can the test be completed?

Why a leaf must be destarched before starting the experiment showing that light is necessary for photosynthesis ?

Starting from methyl iodide, how will you prepare nitromethane ? Write the complete reaction involved.

Meiosis - I is completed before coming out of oocyte from ovary and form?

The number of zeros after decimal before the start of any significant digit in the number N=(0.15)^(20) are :

Assertion : Placenta is combined structure of foetal tissue & maternal tissue Reason : Placenta formation is completed before 6 weeks of pregnancy .

Starting from methyl iodide, how will you prepare methyl nitrite ? Write the complete reaction involved.

A ferry boat has internal volume 1m^3 and weight 50 kg. a. Neglecting the thickness of the wood, find the fraction of the volume of the boat immersed in water. b. If a leak develops in the bottom and water starts coming in, what fraction of the boat's volume will be filled with water before water starts coming in from the sides?

A woman has certain queries as listed below, before starting with contraceptive pills. Answer them. (a) What do contraceptive pills contain and how do they act as contraceptives ? (b) What schedule should be followed for taking these pills ?

A woman has certain queries as listed below, before starting with contraceptive pills. Answer them. (a) What do contraceptive pills contain and how do they act as contraceptives ? (b) What schedule should be followed for taking these pills ?