Mg ribbon on burning gives MgO. Which are the oxides and hydroxides of s block elements available in you science lab

Find the nature of NaOH and KOH by conclusion litmus test and record your conclusion

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Solution

Li , NA , K , Be, Mg , Ca, oxides are easily available

These elements NaOH and KOH turns red litmus paper blue

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The ash obtained from burning of magnesium ribbon is dissolved in water. The solution is tested by litmus paper for acidic nature. Which of the following options is/ are correct?

Q. An element X forms two oxides XO and XO₂. The oxide XO has no action on litmus solution but oxide XO₂ turns litmus solution red.
(a) What is the nature of oxide XO?
(b) What is the nature of oxide XO₂?
(c) Would you call element X a metal or a non-metal? Give reason for your choice.
(d) Can you give an example of element like X?

Q. Consider the following elements of period 3 of the periodic table.
Third period elements

Nature of oxides

Basic nature of oxide decreases - ----------------- \to

Acid turn blue litmus red and bases turn red litmus blue.
By looking at the above information, which of the following conclusions is true -

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Q. Give chemical name and nature (acidic or basic) of the ash formed by burning of a

M g

ribbon in the air?

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Mg ribbon on burning gives MgO. Which are the oxides and hydroxides of s block elements available in you science lab Find the nature of NaOH and KOH by conclusion litmus test and record your conclusion

Li , NA , K , Be, Mg , Ca, oxides are easily available These elements NaOH and KOH turns red litmus paper blue

Mg ribbon on burning gives MgO. Which are the oxides and hydroxides of s block elements available in you science lab

Find the nature of NaOH and KOH by conclusion litmus test and record your conclusion

Li , NA , K , Be, Mg , Ca, oxides are easily available

These elements NaOH and KOH turns red litmus paper blue