Question
Using sodium hydroxide solution, how will you distinguish:
Lead hydroxide from magnesium hydroxide.

Answer

Lead hydroxide from magnesium hydroxide.
When sodium hydroxide is added, lead hydroxide is dissolved in it but when sodium hydroxide is added to magnesium hydroxide, there is no visible reaction i.e. it remains insoluble.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

define deliquescence. Give examples.
Water can split into hydrogen and oxygen under suitable conditions. The equations representing the change is:
$2H_2O(I) \rightarrow 2H_2 (g) + O_2(g)$
If a given experiment results in $2500\ cm^3$​​​​​​​ of hydrogen being produced, what volume of oxygen is liberated at the same time under the same conditions of temperature and pressure?
Explain, why a universal indicator is preferred to acid-base indicators.
(a) Name the acid used for the preparation of hydrogen chloride gas in the laboratory. Why is this particular acid preferred to other acids?
(b) For the preparation of hydrochloric acid in the laboratory :
(i) Why is direct absorption of hydrogen chloride gas in water not feasible?
(ii) What arrangement is done to dissolve hydrogen chloride gas in water?
What are the conditions for the formation of an electrovalent bond?
From the formula listed below, choose one, in each case, corresponding to the salt having the given description: $AgCl, CuCO_3, CuSO_4.5H_2O, KNO_3, NaCl, NaHSO_4, Pb(NO_3)_2, ZnCO_3, ZnSO_4,7H_2O.$
  1. an acid salt
  2. an insoluble chloride
  3. on treating with concentratedsulphuric acid, this salt changes from blue to white
  4. on heating, this salt changes from green to black
  5. this salt gives nitrogen dioxide on heating
Explain Why?
"The number of atoms in a certain volume of hydrogen is twice the number of atoms in the same volume of helium at the same temperature and pressure."
The equation for the burning of octane is:
$2 C _8 H _{18}+25 O _2 \rightarrow 16 CO _2+18 H _2 O$
(i) How many moles of carbon dioxide are produced when one mole of octane burns?
(ii) What volume at S.T.P. is occupied by the number of moles determined in (i)?
(iii) If the relative molecular mass of carbon dioxide is 44 , what is the mass of carbon dioxide produced by burning two moles of octane?
(iv) What is the empirical formula of octane?
(a) (i) Which period in the Periodic Table is the shortest?
(ii) Name all the elements present in this period.
(b) (i) Which period in the Periodic Table is the longest and complete?
(ii) How many elements are present in it?
Draw electron dot structures of the following
CaO