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Is entropy increases for-the following c...

Is entropy increases for-the following change? Explain :C(diamond) `rarr` C(graphite)

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Predict the sign of entropy change is the following reactions CaC_2O_4(s)rarr CaCO_3(s)+CO(g)

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Predict the sign of entropy change is the following reactions O_2(g)+2SO_2(g)rarr 2SO_3(g)

Why are the standard reaction enthalpies of the following two reactions different? (1) C(graphite, s) +O_(2)(g)toCO_(2)(g),DeltaH^(0)=-393.5kJ (2) C(diamond, s) +O_(2)(g)toCO_(2)(g),DeltaH^(0)=-395.4kJ

Write the increasing bond length of the following bonds and explain : C_(sp3) — H_(1s), C_(sp^2) — H_(1s), C_sp — H_(1s) .

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UNITED BOOK HOUSE-MODEL QUESTION PAPER 2-EXERCISE
  1. Which block contains inner transition elements.

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  2. Which element has highest oxidising property?

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  3. Is entropy increases for-the following change? Explain :C(diamond) rar...

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  4. According to first law, for a cyclic process q + w =……………..

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  5. C6H6+CO+HCl overset (Anhydrous AlCl3) underset (Cu2Cl2)() 'A', Identif...

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  6. How many neutrons are present in 5 xx 10^-1 moles of C6 ^14?

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  7. Write two difference between orbit anoorbital. What difference will be...

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  8. Write two limitations of Bohr’s theory.

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  9. [SiF6]^(2-) is known but [SiCI6]^(2-) is not. Give reasons.

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  10. Complete the following reactions :B2H6+3O2 rarr

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  11. Complete the following reactions :Na2B4O7+7H2O rarr

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  12. Write the structural formula of 3, 4, 4,5-tetramethylheptane.

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  13. Arrange the following in decreasing order of -I effect:-I, -Br, -Cl, -...

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  14. Why (CH3)3 overset ((+))(C) is more stable than overset ((+))(CH3) ?

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  15. Briefly mention the role of ozone present in stratosphere in protectin...

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  16. Calculate the uncertainty in velocity of a moving object of mass 25 g,...

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  17. Which series of lines of the hydrogen spectrum lies in the visible reg...

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  18. Nitrogen has positive electron gain enthalpy.Explain.

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  19. Arrange Mg, Al, Si and Na in the increasing order of their ionisation ...

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  20. What are the characteristics of the transition elements and why are th...

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