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What is TLV? Write one harmful effect of...

What is TLV? Write one harmful effect of PAN?

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UNITED BOOK HOUSE-MODEL QUESTION PAPER 6-EXERCISE
  1. Why the phenolphthalein turns pink in borax solution? Why it becomes c...

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  2. Why Na Is taken in excess in Lassigne's test?

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  3. What is TLV? Write one harmful effect of PAN?

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

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  5. Calculate wavelength of a photon having energy 1.2 ev. (1 ev = 1.601 x...

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  6. What in inner transition metal? Give one example of inert pair effect.

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  7. Define ionisation potential. State its change down a group.

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  8. How many sigma & pi bonds are there in propene molecule. State the hyb...

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  9. Dipole moment and bond length of A B type molecule are 7.42 D 2.04 ove...

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  10. State Grahams law of difussion from kinetic theory of gases. What do y...

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  11. Why the froth formed from Sea water is stable? Give the SI unit of Co-...

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  12. Discuss the conditions for spontaneity of a process .

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  13. Classify system. Give example of each kind.

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  14. Balance the equation by ion-electron method : Zn+ NaNO(3) + NaOH to...

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  15. Balance the equation by oxidation Number method: FeS2 + O2 rarr Fe2O3 ...

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  16. Discuss Clark process for softening water.

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  17. Why K & Cs is used in photocell instead Li? Find oxidation number for ...

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  18. Give IUPAC name for the organic Compound:-

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  19. Give IUPAC name for the' organic Compound:-

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  20. Find out Kp//Kc for: CO(g)+frac 1/2 O2 (g) overset (rarr)(larr) CO2 (g...

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