12nd q. i think Mg(NO3)2
ques out the world for me!!!
1. Sulphates of which of the following donot form alums
1. Cs
2. K
3. Li
4. Na
Which of the following compounds decompose on heating similar 2 LiNO3
1.Be(NO3)2
2. Mg(NO3)2
3. Sr(NO3)2
4. All of these
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15 Answers
13A metal forms strong base, salts and stable carbonates . The metal is
1. Transition metal
2. Alkali
3. Alkaliine earth
4. none
13Plumbo-solvancy means dissolution of lead in
1. HOT WATER
2. ACIDS
3. ORDIANRY WATER
4. ALKALIES
13Al reacts with conc H2SO4 to liberate
1. SO2
2. SO3
3. S
4. H2S
1Double sulfates with the general formula A2SO4·B2(SO4)3·24H2O, are known where A is a monovalent cation such as sodium, potassium, rubidium, cesium, or thallium(I),
source:wiki
1for the first 1 the ans is Li bcoz Li is a small alkali metal to form alums or double salts....
for the 2nd 1 the ans is Mg(CO3) bcoz of the diagonal relationship b/w Li & Mg.....
for the 3rd 1 the ans is alkali....
for the 4th 1 the ans is ordinary water bcoz the defn.. of Plumbo-solvancy is the dissolution of lead in water in the presence of oxygen...
1@bhaskar, for second, its not Mg(no3)2... see post above....
i also thot that n told the same,,,, but ans is something else :(
1for 2nd it should be all of these as all Be, Mg & Sr belongs to same group so reracts similarly
& Al reacts with conc. H2SO4 to give SO2
13yeah it shud ...i l go for it if it cumz nywhr next tym
thou the ans given is d