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Ashi .
Subject: Science
, asked on 29/4/18
P4 +OH- --->PH3 + H2PO2-
Balance it medium is not specified .
Please don't attach any links and only by ion electron method .
Answer
3
Jayraj
Subject: Science
, asked on 29/4/18
Solve this:
Q14. Draw a labelled schematic diagram to show the electrolysis of water. Why is the amount of gas collected in one of the test tubes in this activity is double of the amount collected in the other?
Q15. What do you mean by a precipitation reaction?
Q16. A solution of potassium chloride when mixed with silver nitrate solution, an insoluble white substance is formed. Write the chemical reaction involved and also mention the type of the chemical reaction?
Solve this:
Answer
3
Jayraj
Subject: Science
, asked on 29/4/18
Solve this:
Q.12. Ferrous sulphate decomposes with the evolution of a gas having a characteristic odour of burning sulphur. Write the chemical reaction involved and identify the type of reaction.
Answer
2
Jayraj
Subject: Science
, asked on 29/4/18
Solve this:
Q9. Which among the following changes are exothermic or ectothermic in nature?
(a) Decomposition of ferrous sulphate
(b) Dilution of sulphuric acid
(c) Dissolution of sodium hydroxide in water
(d) Dissolution of ammonium chloride in water
Q10. Why do fire flies glow at night?
Q11. Why the solution of silver nitrate becomes blue in colour after some time when copper turnings are added to it?
Q12. Ferrous sulphate decomposes with the evolution of a gas having a characteristic odour of burning sulphur. Write the chemical reaction involved and identify the type of reaction.
Answer
1
Jayraj
Subject: Science
, asked on 29/4/18
Solve this:
Answer
1
Jayraj
Subject: Science
, asked on 29/4/18
Q.):- Complete the missing components / variables given as x and y in the following reactions.
a
)
P
b
N
O
3
2
(
a
q
)
+
2
K
l
(
a
q
)
→
P
b
I
2
x
+
2
K
N
O
3
(
y
)
b
)
C
u
(
s
)
+
2
A
g
N
O
3
(
a
q
)
→
C
u
(
N
O
3
)
2
(
a
q
)
+
x
(
s
)
c
)
Z
n
(
s
)
+
H
2
S
O
4
(
a
q
)
→
Z
n
S
O
4
(
x
)
+
H
2
(
y
)
d
)
C
a
C
O
3
(
s
)
→
x
C
a
O
(
s
)
+
C
O
2
(
g
)
Answer
1
Akanksha Prasad
Subject: Science
, asked on 29/4/18
Dear meritnation expert
How to make a timetable for each subject in class 10 and how to study all subjects effectively to score good marks
Answer
2
Anurag Ranjan
Subject: Science
, asked on 29/4/18
What is Catalist ? How to identify it.
Answer
1
Anurag Ranjan
Subject: Science
, asked on 29/4/18
In a balanced chemical equation what does (aq) stands for & how to identify it.
Explain withan example?
Answer
2
Anurag Ranjan
Subject: Science
, asked on 29/4/18
Explain, why should a magnesium ribbon be cleaned before burning in air.
Explain Breify?
Answer
1
Neha
Subject: Science
, asked on 28/4/18
Please answer 10th??
10.
(i)
A
B
→
A
+
B
.
What type of reaction is this? Give an example with balanced chemical equation for this type of reaction where energy is supplied in the form of light.
(ii) Give one practical application of this reaction.
Answer
5
Neha
Subject: Science
, asked on 28/4/18
Solve this:
7. Name and state the law which relates the current in a conductor to the potential difference across its ends. Draw a circuit diagram to establish the relationship between the potential difference across the two ends of a resistor and the current flowing through it.
8. Balance the following equation.
HNO
3
+ Ca(OH)
2
→
Ca(NO
3
)
2
+ H
2
O
9. Give an example of a combination reaction.
Answer
1
Neha
Subject: Science
, asked on 28/4/18
Balance please???
Balance the following equation
H
N
O
3
+
C
a
(
O
H
)
2
→
C
a
(
N
O
3
)
2
+
H
2
O
Answer
1
Janhavi Giri
Subject: Science
, asked on 26/4/18
Please solve this please fast need it
Answer
1
S Pearl Christina
Subject: Science
, asked on 26/4/18
How to balance these chemical equations:
1.NaOH+H
2
SO
4
-Na
2
SO
4
+H
2
O
2.KClO
3
-KCl +O2
3.Hg(NO
3
)
2
+KI - HgI
2
+KNO
3
Answer
1
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What are you looking for?
Balance it medium is not specified .
Please don't attach any links and only by ion electron method .
Q14. Draw a labelled schematic diagram to show the electrolysis of water. Why is the amount of gas collected in one of the test tubes in this activity is double of the amount collected in the other?
Q15. What do you mean by a precipitation reaction?
Q16. A solution of potassium chloride when mixed with silver nitrate solution, an insoluble white substance is formed. Write the chemical reaction involved and also mention the type of the chemical reaction?Solve this:
Q.12. Ferrous sulphate decomposes with the evolution of a gas having a characteristic odour of burning sulphur. Write the chemical reaction involved and identify the type of reaction.
Q9. Which among the following changes are exothermic or ectothermic in nature?
(a) Decomposition of ferrous sulphate
(b) Dilution of sulphuric acid
(c) Dissolution of sodium hydroxide in water
(d) Dissolution of ammonium chloride in water
Q10. Why do fire flies glow at night?
Q11. Why the solution of silver nitrate becomes blue in colour after some time when copper turnings are added to it?
Q12. Ferrous sulphate decomposes with the evolution of a gas having a characteristic odour of burning sulphur. Write the chemical reaction involved and identify the type of reaction.
How to make a timetable for each subject in class 10 and how to study all subjects effectively to score good marks
Explain withan example?
Explain Breify?
10. (i) What type of reaction is this? Give an example with balanced chemical equation for this type of reaction where energy is supplied in the form of light.
(ii) Give one practical application of this reaction.
7. Name and state the law which relates the current in a conductor to the potential difference across its ends. Draw a circuit diagram to establish the relationship between the potential difference across the two ends of a resistor and the current flowing through it.
8. Balance the following equation.
HNO3 + Ca(OH)2 Ca(NO3)2 + H2O
9. Give an example of a combination reaction.
Balance the following equation