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The English chemist John Alexander Newla...

The English chemist John Alexander Newlands in `1866` profounded the

A

law of triads

B

law of octaves

C

law of pentaves

D

law of hexaves

Text Solution

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The correct Answer is:
B
It stated that when the known elements are listed by increasing atomic weights, those tat were eight places apart would be similar, much like the notes on a pinao keyboard.
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The most pupular electrochemical cell, daniel cell was originally developed by the English chemist john F daniel the general assembly of the cell is as given below An undergraduate student made a Daniel cell using 100cm^(3) of 0.100MCuSO_(4) ad 0.100M ZnSO_(4) solution respectively. The two compartments are connected by suitable salt bridge. [given E_((Cu^(2+)//Cu))^(@)=0.34V,E_((Zn^(2+)//Zn))=-0.76V,(2.30RT)/(F)=0.06,log2=0.3] Q. Calculate the emf (in volt) of the above cell.

The most pupular electrochemical cell, daniel cell was originally developed by the English chemist john F daniel the general assembly of the cell is as given below An undergraduate student made a Daniel cell using 100cm^(3) of 0.100MCuSO_(4) ad 0.100M ZnSO_(4) solution respectively. The two compartments are connected by suitable salt bridge. [given E_((Cu^(2+)//Cu))^(@)=0.34V,E_((Zn^(2+)//Zn))=-0.76V,(2.30RT)/(F)=0.06,log2=0.3] Q. A labmate of the student asked her for some solid CuCl_(2) . while she was lifting the bottle from a shelf, the lid of the bottle slipped and some amount of CuCl_(2) fell in the CuSO_(4) compartment at constant volume. She measured the emf of the cell again and found that it has increase by 9 mV. She used this data to calculate the amount of CuCl_(2) that had spilled in the compartment. Calculate the mass of CuCl_(2) that had spilled into the daniel cell? (molar mass of CuCl_(2)=135(g)/(mol))

R SHARMA-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN ELEMENTS-Follow-up Test
  1. Which of the following sets of three elements (triads) follow Dddot(o)...

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  2. In telluric screw, element which differed from each other by a multipl...

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  3. The English chemist John Alexander Newlands in 1866 profounded the

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  4. Newland's law of octaves seemed to be flawless only for elements up to...

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  5. With the discovery of, the properties of the eighth element were no lo...

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  6. Name the scientist who first arranged the elements is rows and columns...

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  7. Lothar Meyer used the physical property such asto construct a plot sho...

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  8. Mendeleev's system was more elaborate than that of Lohar Meyer because...

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  9. Atomic volume is

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  10. Lothar Meyer plotted a graph between the atomic volumes and atomic wei...

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  11. On the basis of the atomic volume curve, Lothar Meyer proposed that th...

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  12. When Mendeleev started his work on periodic classification of elements...

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  13. The formula of the hydrides and oxides formed by the various elements ...

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  14. Mendeleev's arranged the then known elements in horizontal rows and ve...

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  15. Mebdeleev's classification was a great improvement over contemporary t...

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  16. Which of the following elements were not known when Mendeleev publishe...

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  17. In Mendelev's modified periodic table, there arevertical column called...

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  18. In Mendeleev's periodic table group VIII containselements.

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  19. In Mendeleev's original periodic table, there were six horixontal rows...

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  20. Mendeleev's periodic table simplified and systematized the study of th...

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