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Recent questions tagged hydrogen
+3
votes
1
answer
Assertion : Heavy water preferred over ordinary water as a moderator in reactors.
asked
Apr 7, 2019
in
Class 12
by
kratos
neet
p-block elements
class-11
aiims
hydrogen
class-12
nuclei
+3
votes
1
answer
In which respect hydrogen differs from alkali metals and halogens?
asked
Apr 6, 2019
in
Class 11
by
kratos
class-11
hydrogen
+3
votes
1
answer
Statement I : HNO3 is a stronger acid than HNO2.
asked
Apr 6, 2019
in
JEE
by
kratos
jee
hydrogen
jee mains
p - block element
+1
vote
1
answer
Why hydrated barium peroxide is used in the preparation of H2O2 instead of the anhydrous variety?
asked
Apr 5, 2019
in
Class 11
by
kratos
properties of compounds
class-11
hydrogen
+1
vote
1
answer
The oxide that gives H2O2 on treatment with dilute H2SO4 is —
asked
Apr 5, 2019
in
Class 12
by
kratos
neet
class-11
jee
aiims
hydrogen
jee mains
p - block element
+3
votes
1
answer
The reaction which does not liberate hydrogen gas is
asked
Apr 5, 2019
in
JEE
by
kratos
jee
hydrogen
class-10
jee mains
bitsat
p - block element
periodic classification of elements
+1
vote
1
answer
Which is the strongest acid in the following? (a) HCIO4 (b) H2SO3
asked
Apr 4, 2019
in
Class 12
by
kratos
neet
the p block elements
aiims
jee
hydrogen
jee mains
p - block element
+3
votes
1
answer
How does H2O2 react with KMnO4 in acidic medium? Write four uses of H2O2.
asked
Apr 4, 2019
in
Class 11
by
kratos
redox reactions
class-11
hydrogen
+3
votes
1
answer
The material used in solar cells contains (a) Cs (b) Si (c) Sn
asked
Apr 3, 2019
in
JEE
by
kratos
jee
hydrogen
jee mains
p - block element
+1
vote
1
answer
Hydrogen closely resembles halogens because
asked
Apr 3, 2019
in
Class 11
by
kratos
class-11
hydrogen
cbse
+2
votes
1
answer
Ammonia is collected by downward displacement of air. Give scientific reasons :
asked
Apr 3, 2019
in
Class 12
by
kratos
hydrogen chloride
class-8
hydrogen
class-10
icse
study of compounds
class-12
+2
votes
1
answer
Explain why hard water produces less lather with soap?
asked
Apr 2, 2019
in
Class 11
by
kratos
class-11
hydrogen
+2
votes
1
answer
When metal 'M' is treated with NaOH, a white gelatinous precipitate 'X' is obtained,
asked
Apr 2, 2019
in
JEE
by
kratos
jee mains 2018
jee
hydrogen
jee mains
p - block element
+2
votes
1
answer
Which of the following metals reacts with water?
asked
Apr 2, 2019
in
Class 12
by
kratos
neet
aiims
hydrogen
+2
votes
1
answer
Why is hydrogen peroxide stored in wax-lined bottles?
asked
Apr 2, 2019
in
Class 11
by
kratos
class-11
hydrogen
cbse
+1
vote
1
answer
Draw the structure of water.
asked
Apr 1, 2019
in
Class 11
by
kratos
class- 11
hydrogen
+3
votes
1
answer
Calculate the strength in volumes of a solution containing 30.36 g/l of H2O2.
asked
Apr 1, 2019
in
Class 12
by
kratos
class-11
hydrogen
aiims
neet
+3
votes
1
answer
Which of the following statements are correct?
asked
Apr 1, 2019
in
JEE
by
kratos
cbse
jee
hydrogen
jee mains
class-12
p - block element
+3
votes
1
answer
When a blue litmus is dipped into a solution of hypo chlorous acid, it first turns red and then later gets decolourised. Why?
asked
Apr 1, 2019
in
Class 11
by
kratos
properties of compounds
cbse
acids
class- 11
class-11
hydrogen
class-10
class-7
carbon and its compounds
redox reactions
bases and salts
+2
votes
1
answer
Anhydrous BaO2 is not used for preparing H2O2. Why?
asked
Mar 31, 2019
in
JEE
by
kratos
class-11
jee
hydrogen
jee mains
p - block element
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