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Which metal ion is a constituent of chlo...

Which metal ion is a constituent of chloro- phyll

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ICSE-THE s - BLOCK ELEMENTS-VERY SHORT ANSWER TYPE QUESTIONS
  1. Among the alkaline earth metal carbonates which one is least stable to...

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  2. Among MgSO4, CaSO4, SrSO4 and BaSO4, which one is most soluble in wate...

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  3. Which metal ion is a constituent of chloro- phyll

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  4. How does beryllium react with NaOH ?

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  5. Which group 2 element oxide is amphoteric in nature ?

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  6. Which element possesses the highest specific heat?

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  7. Is lithium affected by dry air?

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  8. Which gas is evolved when lithium is treated with cold water?

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  9. How does lithium react with alkalis?

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  10. To what extent is sodium present in the earth's crust?

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  11. Which compound is formed when sodium is heated in oxygen ?

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  12. What happens when sodium is left exposed to atmosphere?

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  13. Write the chemical formulae of the following compounds: washing soda...

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  14. Which of the following are deliquescent? NaCl, NaOH, Na2CO3, NaHCO3

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  15. What is the nature of an aqueous solution of sodium carbonate?

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  16. Which compond of sodium is used for washing purposes in laundry ?

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  17. Why is the ionisation enthalpy of magnesium higher than that of potass...

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  18. What is the formula of hypo?

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  19. What is the role of hypo in photography?

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  20. Write the chemical formulae of the following: Quick lime, slaked lim...

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