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If 100 grams of pure water taken from di...

If 100 grams of pure water taken from different sources is illustrated by passing electricity , 11 grams of hydrogen and 89 grams of oxygen are obtained. Which law is illustrated by the statement.

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The correct Answer is:
C
Hint: `(Yb^(+2)) = [Xe] 4 f^(14)`
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The existence of negatively charged particle in an atom was shown by J.J. Thomson as a result of the studies of the passage of electricity through gases at extremely low pressure known as discharge tube experiments. When a high voltage of the order of 10,000 volts or more was impressed across the electrodes, some sort of invisible rays moved from the negative electrode to the positive electrode these rays are called as cathode rays. Cathode rays travel in straight path in absence of electrical and magnetic field . Cathode rays consist of material part and charged particles? Cathode rays produce X-rays and light is emitted when they strike on ZnS screen. Cathode rays penetrate through thin sheets of aluminium and other metals . They affect the photogenic plate and passes heating effect when they strike on metal foil. The raito of charge to mass i.e charge/mass is same for all the cathode rays irrespective of the gas used in the tube. The existence of positively charged particle in an atom was shown be E. Goldstein. He repeated the same discharge tube experiments by using a perforated cathode. It was observed that when a high potential difference was applied between the electrodes, not only cathode rays were produced but also a new type of rays were produced simultaneoulsy from anode moving towards cathode and passes through the holes or canal of the cathode. These termed as canal rays or anode rays. These rays travel in straight lines and consists of positively charged particles. These rays have kinetic energy and produces heating effect also. The e/m ratio of these rays is smaller than that of electrons. Unlike cathode rays, their e/m value is dependent upon the nature of the gas taken in the tube. These rays produced flashes of light on ZnS screen and can pass throughs thin metal foils. They can produce physical and chemical changes and are capable to produce ionisation in gases. Select the incorrect statement.

The existence of negatively charged particle in an atom was shown by J.J. Thomson as a result of the studies of the passage of electricity through gases at extremely low pressure known as discharge tube experiments. When a high voltage of the order of 10,000 volts or more was impressed across the electrodes, some sort of invisible rays moved from the negative electrode to the positive electrode these rays are called as cathode rays. Cathode rays travel in straight path in absence of electrical and magnetic field . Cathode rays consist of material part and charged particles? Cathode rays produce X-rays and light is emitted when they strike on ZnS screen. Cathode rays penetrate through thin sheets of aluminium and other metals . They affect the photogenic plate and passes heating effect when they strike on metal foil. The raito of charge to mass i.e charge/mass is same for all the cathode rays irrespective of the gas used in the tube. The existence of positively charged particle in an atom was shown be E. Goldstein. He repeated the same discharge tube experiments by using a perforated cathode. It was observed that when a high potential difference was applied between the electrodes, not only cathode rays were produced but also a new type of rays were produced simultaneoulsy from anode moving towards cathode and passes through the holes or canal of the cathode. These termed as canal rays or anode rays. These rays travel in straight lines and consists of positively charged particles. These rays have kinetic energy and produces heating effect also. The e/m ratio of these rays is smaller than that of electrons. Unlike cathode rays, their e/m value is dependent upon the nature of the gas taken in the tube. These rays produced flashes of light on ZnS screen and can pass throughs thin metal foils. They can produce physical and chemical changes and are capable to produce ionisation in gases. Which is not true with respect to cathode rays?

Oxygen gas generated by the decomposition of potassium chlorate is collected. The volume of oxygen collected at 24^(@)C and atmospheric pressure of 760 m m Hg is 128 mL . Calculate the mass ( in grams ) of oxygen gas obtained. The pressure of water vapour at 24^(@)C is 22.4 m m Hg .

ACCURATE PUBLICATION-D & F BLOCK ELEMENTS -2 OR 5 MARKS QUESTIONS
  1. If 100 grams of pure water taken from different sources is illustrated...

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  2. What are transition elements ? Which of the d block elements are not r...

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  3. What are the characteristics of the transition elements ?

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  4. In what way is the electronic configuration of transition elements dif...

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  5. Why is Copper considered as transition metal ?

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  6. Scandium (z = 21) is a transition element but zinc (z = 30) is not. Ex...

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  7. Sliver atom has completely filled d-orbitals (4d^10) in its ground sta...

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  8. [Ti (H2O)6]^(3+) is coloured while [Sc(H2O)6]^(3+) is colourless. Expl...

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  9. Explain why TiCl3 is coloured but TiCl4 is colourless ?

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  10. Explain why [Ti (H2O)6]^(3+) is violet while [Ti (H2O)6]^(4+) is colou...

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  11. Why Cd^(2+) salts are white ? Cd=48

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  12. Which of the two is paramagnetic V(IV) or V(V) and why ?

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  13. Why does Mn(II) shows maximum paramagnetic character among the dival...

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  14. Name the elements represented by following symbols : Hg , Pb , Au , Ag...

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  15. What is atomicity ? Explain with two examples.

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  16. What is the atomicity of the following : oxygen

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  17. Explain why Cu(I) is diamagnetic while Cu(II) is paramagnetic in natur...

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  18. Transition metals have high melting points and boiling points. Why?

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  19. What is the atomicity of the following : ozone

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  20. What is the atomicity of the following : neon

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  21. What is the atomicity of the following : phosphorous

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