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1
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
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20.0 g of a magnesium carbonate sample decomposes on heating to give carbon dioxide and 8.0 g magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample?
(At. wt. of Mg = 24)
A
96
B
60
C
84
D
75
2
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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On heating which of the following releases CO2 most easily?
A
Na2CO3
B
MgCO3
C
CaCO3
D
K2CO3
3
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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The function of ''Sodium pump'' is a biological process operating in each and every cell of all animals. Which of the following biologically important ions is also a constituent of this pump?
A
K+
B
Fe2+
C
Ca2+
D
Mg2+
4
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Solubility of the alkaline earth metal sulphates in water decreases in the sequence
A
Sr > Ca > Mg > Ba
B
Ba > Mg > Sr > Ca
C
Mg > Ca > Sr > Ba
D
Ca > Sr > Ba > Mg
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