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Explain the following properties of grou...

Explain the following properties of group 16 elements :
(iv) Allotropy

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Properties of group 16 elements :
(iv) Allotropy : All elements show allotropy
`O rarr O_(2) and O_(3), S rarr alpha, beta , gamma` plastic
`Se rarr " red monoclinic, gray metallic,"`
`Po rarr alpha and beta.`
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GURUKUL PUBLICATION - MAHARASHTRA PREVIOUS YEAR PAPERS- FEBRUARY 2019-SECTION - D
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  2. ROSENMUND REDUCTION

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  3. Write chemical equation for the following : Fischer esterification

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  4. Write the reactions involved in the following: (i) Hell-Volhard Zeli...

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  5. What are anines ?

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  6. How will you convert : (i) calcium acetate to acetaldehyde

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  7. How will you convert : (ii) acetone to acetone cyanohydrin

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  8. How will you convert : (iii) sodium acetate to methane

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  9. How will you convert : (iv) benzoic acid to m-bromobenzoic acid?

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  10. Enantiomers are

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  11. How the potassium dicharomate prepared from chrome iron ore?

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  12. grignard reagent

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  13. Explain the position of actinoids in the periodic table. What is the...

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  14. The rate of a first order reaction. A rarrB is 5.4xx10^(-6)Ms^(-1) whe...

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  15. Explain the following properties of group 16 elements : (i) Electron...

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  16. Explain the following properties of group 16 elements : (ii) Melting...

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  17. Explain the following properties of group 16 elements : (iii) Meltin...

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  18. Explain the following properties of group 16 elements : (iv) Allotro...

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  19. The half life period of a first order reaction is 6.0 h. Calculate the...

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  20. What are oxides ? Write different types of oxides with one example e...

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