Which of the following precipitates is formed, on mixing lead nitrate [Pb(NO3)2 ] with potassium iodide [KI] ?
A) Brown coloured PbI2
B) Green coloured PbI2
C) Blue coloured PbI2
D) Yellow coloured Pbl2
1 Answers
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Find the formula mass of : i. NaCl ii. Cu(NO3)2
i. Formula mass of NaCl = Average atomic mass of Na + Average atomic mass of Cl = 23.0 u + 35.5 u = 58.5 u ii. Formula mass of Cu(NO3)2 = Average atomic mass...
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Symbol of nitrate is ……………… A) NO3^-
Correct option is A) NO3-
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a, b, c are ………., …………., ……… (respectively) A) NaCl, Na2 NO3 , MgOH
D) NaCl, NaNO3 , Mg(OH)2
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A solution of potassium iodide reacts with lead nitrate to give …………………
Correct option is C) A and B
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The reaction of lead nitrate with dil. HCl represents ……………..
D) double decomposition
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Heating of which of the following compounds gives acidic and basic oxide ? A) Pb(NO3)2
Correct option is C) CaCO3
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Which of the following gases indicates the brown fumes liberating in the boiling tube, when lead nitrate is heated ?
Correct option is D) NO2
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Which of the following precipitates is formed on mixing sodium sulphate with barium chloride solution?
A) White precipitate of barium sulphate
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Statement-1 . Sodium reacts with oxygen to form `Na_(2)O_(2)` but potassium reacts with oxygen to form `KO_(2)`. Statement-2 . Potassium is more react
Correct Answer - b Correct explanation . Due to bigger size of `K^(+)` than `Na^(+)`, it has a weak positive field around it which cannot prevent peroxide ion `(O_(2)^(2-))` to combine...
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12.976 g of lead combines with 2.004 g of oxygen to form `PbO_(2). PbO_(2)` can also be produced by heating lead nitrate and it was found that the per
In both cases percentage of oxygen is the same, so the law of constant composition is illustrated.
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