Who performed Swan-necked flask experiment in support of Biogenesis?

In a study to test the effectiveness of new variety of seeds, an experiment was performed with 50 experimental fields and the following results were obtained : Find the variance and standard deviation.

Three students X,Y and Z performed an experiment for studying the variation of alternating currents with angular frequency in a series LCR-circuit and obtained the graphs shown in the figure They all used a.c sources of the same r.m.s. value and inductances of the same value. What can we conclude about the capacitance value. What can we conclude about nature of the impedance of the set up at frequency omega_0 ?

Three students X,Y and Z performed an experiment for studying the variation of alternating currents with angular frequency in a series LCR-circuit and obtained the graphs shown in the figure They all used a.c sources of the same r.m.s. value and inductances of the same value. What can we conclude about the resistance values used by them

A student performed the experiment of heating ferrous sulphate crystals in a boiling tube. He smell fumes of a pungent gas saw colours of ferrous sulphate disappear Identify the nature of this chemical reaction.

A student performed the experiment of heating ferrous sulphate crystals in a boiling tube. He smell fumes of a pungent gas saw colours of ferrous sulphate disappear Write the chemical formula of the pungent gas

A student performed the experiment of heating ferrous sulphate crystals in a boiling tube. He smell fumes of a pungent gas saw colours of ferrous sulphate disappear Why does the colour of crystals disappear?

Miller performed experiment to prove abiogenic molecular evolution of life. Which molecule was not present in Millier's experiment?

Two students perform the experiments on series and parallel combinatins of two given resistors R_1 and R_2 and plotted the following V-I graphs: Which of the graph is correctly labelled in term sof the words "series" and "paralle"? justify your answer.

Two students X and Y performs an experiment on potentiometer separately using the ciruit diagram shown in the fig keeping other things unchanged X increases the value of resistance R. How would these changes affect the position of null point in each case and why?