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Byju's Answer
Standard XII
Chemistry
Reactivity Trends (Group 2)
Silica reacts...
Question
Silica reacts with magnesium to form a magnesium compound
X
.
X
reacts with dilute
H
C
l
and forms
Y
.
Y
is :
A
M
g
O
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B
M
g
S
i
O
3
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C
S
i
C
l
4
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D
M
g
C
l
2
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Solution
The correct option is
A
M
g
C
l
2
As per the given question reactions are:
S
i
O
2
+
2
M
g
→
2
M
g
O
+
S
i
silica
X
Again,
M
g
O
+
2
H
C
l
→
M
g
C
l
2
+
H
2
O
X
Y
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0
Similar questions
Q.
Silica reacts with
M
g
to form a magnesium compound
A
.
A
reacts with dilute
H
C
l
and forms
B
. The compound
B
is:
Q.
Silica reacts with magnesium to form a magnesium compound (X). X reacts with dil HCl and forms (Y) and (Z). If two moles of HCl react with one mole of X how many moles of Y will be formed?
Q.
When magnesium reacts with dilute
H
C
l
, the gas formed is:
Q.
Sodium thiosulphate reacts with dil.
H
C
l
to form
N
a
C
l
,
H
2
O
,
X
and
Y
,
X
reacts with
N
a
2
S
to form
N
a
2
S
2
O
3
and
Y
. Which one of the following is
Y
?
Q.
When a piece of limestone reacts with dilute HCl, a gas X is produced. When gas X is passed through lime water then a white precipitate Y is formed. On passing excess of gas X, the white precipitate dissolves forming a soluble compound Z.
(a) What are X, Y and Z?
(b) Write equations for the reactions which take place:
(i) when limestone reacts with dilute HCl
(ii) when gas X reacts with lime water to form white precipitate Y
(iii) when excess of gas X dissolves white precipitate Y to form a soluble compound Z
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