LIFE MEIN FADTE RAHO BADIYA LOG MILTE RAHENGE | #Shorts

Short life span is of

Read the following five statement about lifespan ( A to E) and select the options with all correct statements: (A) The peroid from birth to the natural death of an organism represents its life span . (B) Life span of organisms are correlated with their sizes. (C) The sizes of crows and parrots are not very differnet yet their life spans shown a wide difference. (D) A mango tree has a much shortes life span as compared to a peepal tree. ltbr gt (E) All higher oragnsims are immortal, they have no natural death .

Assertion :- The rate of appearance of new forms is liked to the life cycle or the life span of organisms. Reason :- The organism with short life span have ability to produce more progenies in shorter time and that have chance to more expsure with nature.

A small amount of solution containing a radioactive nucleide A""^(x) was administrated into the blood of a patient. The activity of the nucliede id 2xx10""^(3) dps. Its half life is 15 hours. After 5 hours a sample of the blood drawn out from the patient. It,s activity was 16 dpm per mL. What is the volume of the 'blood' in the patient? (Log(1.26)=0.1)

For the first order reaction A to 2 B ,1 mole of reactant A gives 0.2 moles of B after 100 minutes. The half life of the reaction is ...... min. (Round off to the nearest integer). [Use ln 2 =0. 69, ln 10 = 2. 3 Properties of logarithms : ln x ^(y) = y ln x, ln ((x)/(y)) = ln x - ln y] Round off to the nearest integer)

For reaction X rarr Y+Z half life is independent of the concentration of X .After 20 minutes volume of gas Z is 10mL and after very long time it is 50mL ,the rate constant is : 1) (2.303)/(20)log5 2) (2.303)/(20)log1.25 3) (2.303)/(10)log2 4) (2.303)/(20)log4