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How many neutrons are present in 5 xx 10...

How many neutrons are present in `5 xx 10^-1` moles of `^14_6C?

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UNITED BOOK HOUSE-Question Papers 2018-EXAMPLE
  1. Write the SI unit of entropy.

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  2. What reagent can be used for the following conversation ? HC = CH rarr...

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  3. How many neutrons are present in 5 xx 10^-1 moles of ^146C?

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  4. Determine the mass percentage composition of water (H=1. o=16).

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  5. Mention Heiscenberg's uncertainly principle. Calculate the uncertainty...

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  6. Explain why CCl4 is not hydrolysed while SiCl4 is hydroglysed

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  7. Why is the aqueos solution of borax alkaline?

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  8. Which reagent is called anmelectrophile in organic reation? write with...

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  9. Write the IUPAC names of the compounds CH2=CHCH2CH2C=CH and CH3CH=CH...

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  10. Mention two causes of soil pollution .

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  11. How does the increase in the amount of CO2 in the atmosphere lead to g...

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  12. Write with an example the condition for two atoms tom be considered as...

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  13. "26Fe^(3+) is more stable than Fe^(2+). Explain why? Which is more par...

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  14. What are the quantum numbers by which an electron in an atom can be de...

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  15. What is the maximum number of quantum number that may be the same for ...

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  16. The outermost electrons configuration of the atom of an elements is 3s...

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  17. Why is the electron gain enthalpy of oxygen is less than that of sulph...

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  18. O2 is paramagnetic, why?

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  19. Write the resonance structure of CO3^(2-) ion.

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  20. Why is boiling point of H2O grater than that of H2S?

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