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Recent questions tagged p - block element
+1
vote
1
answer
Draw the structure of P4O10 and identify the number of single and double P-O bonds.
asked
Apr 7, 2019
in
JEE
by
kratos
jee
jee mains
p - block element
+1
vote
1
answer
Match the items of Columns I and II and mark the correct option.
asked
Apr 7, 2019
in
Class 12
by
kratos
neet
class-12
p - block element
cbse
+3
votes
1
answer
MnO2, PbO2 and red lead react with conc. HCl acid liberates Cl2.
asked
Apr 7, 2019
in
JEE
by
kratos
hydrogen chloride
jee
class-10
icse
jee mains
study of compounds
qualitative analysis
p - block element
+1
vote
1
answer
NO2 required for a reaction is produced by the decomposition of N2O5 in CCl4 as per the equation,
asked
Apr 7, 2019
in
JEE
by
kratos
jee main 2020
p-block element
jee
jee mains
class-12
chemical kinetics
p - block element
+2
votes
1
answer
Which of the following is formed when cyclohexanone is heated with conc. NaOH
asked
Apr 7, 2019
in
Chemistry
by
kratos
organic chemistry
carboxylic acids
neet
carbonyl compounds
class-11
amines
some basic principles and techniques
class-12
p - block element
+3
votes
1
answer
From B2H6 all the following can be prepared except : (A) H3BO3 (B) NaBH4 (C) B2(CH3)6
asked
Apr 6, 2019
in
JEE
by
kratos
jee
jee mains
p - block element
+1
vote
1
answer
Give reasons for the following: (i) Conc. HNO3 turns yellow on exposure to sunlight.
asked
Apr 6, 2019
in
JEE
by
kratos
cbse
class-11
jee
class-10
jee mains
chemical reactions and equations
p - block element
+1
vote
1
answer
An element (X) forms compounds of the formula XCl3, X2O5 and Ca3X2, but does not form XCl5.
asked
Apr 6, 2019
in
Class 12
by
kratos
neet
cbse
aiims
ntse
class-10
carbon and its compounds
mole concept
class-12
p - block element
+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
+3
votes
1
answer
Assign a reason for each of the following statements. (a) Alkali metals dissolve in liquid ammonia to give deep blue solution.
asked
Apr 6, 2019
in
JEE
by
kratos
cbse
class-11
jee
jee mains
alkali and alkaline earth metals
p - block element
+3
votes
1
answer
Complete the following chemical equations: (i) C + H2SO4 (conc.) →
asked
Apr 6, 2019
in
Class 12
by
kratos
isc
cbse
the p block elements
class-11
class-10
icse
carbon and its compounds
class-12
p - block element
+2
votes
1
answer
Which of the following is nonmetal (a) Ga (b) In (c) Th (d) B
asked
Apr 6, 2019
in
Class 12
by
kratos
neet
class-11
jee
jee mains
p - block element
+2
votes
1
answer
Why is I2 less reactive than ICl?
asked
Apr 5, 2019
in
Class 12
by
kratos
cbse
p-block elements
group 17 elements
class-12
p - block element
+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
+1
vote
1
answer
In which of the following compounds, an element exhibits two different oxidation states.
asked
Apr 5, 2019
in
Class 12
by
kratos
cbse
class-11
redox reaction
class-12
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
+3
votes
1
answer
Aqueous solution containing 1 mol of borax reacts with 2 mol of acids. This is because of : (A) formaiton of 2 mol of B(OH)3 only
asked
Apr 5, 2019
in
JEE
by
kratos
jee
jee mains
p - block element
+2
votes
1
answer
Write chemical equations when : (i) XeF2 is hydrolysed.
asked
Apr 4, 2019
in
JEE
by
kratos
class-12
jee mains
p - block element
jee
cbse
+2
votes
1
answer
Mention three important uses of borax.
asked
Apr 4, 2019
in
JEE
by
kratos
class-11
jee
jee mains
p - block element
+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
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