Login
Login
Register
Questions
Unanswered
Tags
Categories
Ask a Question
Ask a Question
Recent questions tagged some basic concepts of chemistry
+3
votes
1
answer
State the number of significant figures in each of the following: (i) 208.91 (ii) 0.00456 (iii) 453 (iv) 0.346
asked
Apr 6, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
class-11
+3
votes
1
answer
0.39 g of a hydrocarbon on combustion produces 1.32 g CO2 and 0.27 g of H2O.
asked
Apr 6, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
jee mains 2019
jee
jee mains
+2
votes
1
answer
Name the chemical responsible for depletion of ozone layer.
asked
Apr 6, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
environmental chemistry
environment
class-11
jee
environment pollution
class-9
jee mains
+1
vote
1
answer
The number of molecules in 22.4 dm^3 of nitrogen gas at STP is
asked
Apr 5, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
class-11
jee
jee mains
+1
vote
1
answer
What is the relation between empirical and molecular formula?
asked
Apr 5, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
class-11
+2
votes
1
answer
What do you mean by chemistry?
asked
Apr 5, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
class-11
jee
jee mains
+2
votes
1
answer
At STP the order of mean square velocity of molecules of H2 , N2 , O2 and HBr is -
asked
Apr 5, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
neet
class-11
aiims
states of matter
kinetic theory of gases
+2
votes
1
answer
The law of multiple proportions was proposed by
asked
Apr 4, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
jee
jee mains
+1
vote
1
answer
The number of water molecules is maximum in
asked
Apr 4, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
neet
class-11
+1
vote
1
answer
Calculate the amount of water produced in gram by the combustion of 8 g of Methane.
asked
Apr 3, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
class-11
basic concepts of chemistry
chemical calculations
+2
votes
1
answer
At temperature, T compound AB2(g) dissociates according to the reaction 2AB2(g) ⇄2AB(g) + B2(g)
asked
Apr 3, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
neet
class-11
jee
jee mains
equilibrium
chemical equilibrium
+1
vote
1
answer
An organic compound having molecular mass 60 is found to contain C=20%, H=6.67% and N=46.67% while rest is oxygen.
asked
Apr 3, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
neet
organic compounds
jee
nitrogen containing compounds
kcet
jee mains
containing nitrogen
+2
votes
1
answer
The maximum amount of BaSO4 precipitated on mixing BaCl2 (0.5 M) with H2SO4 (1 M) will corrrespond to
asked
Apr 2, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
neet
class-11
jee
aiims
jee mains
+3
votes
1
answer
What would be the SI unit for the quantity PV2T2/N
asked
Apr 2, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
measurement
cbse
class-11
class-7
states of matter
+3
votes
1
answer
Where do we see neutrolisation in everyday life ?
asked
Apr 2, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
chemical bonding
class- 11
cbse
measuerement
class-11
molecular structure
class-9
class-7
meadow surprise
equilibrium
+2
votes
1
answer
Two elements, A and B, combine to form a compound in which ‘a’ g of A combines with ‘b1’ and ‘b2’g of B respectively.
asked
Apr 2, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
jee
jee mains
+1
vote
1
answer
A solution NaoH is 4g/l what volume of HCl gas at STP will neutralize 50 ml of the alkali solution
asked
Apr 2, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
stoichiometry in physical chemistry
neet
class-11
jee
physical chemistry
aiims
jee mains
+2
votes
1
answer
Explain the Molar concentration/Molarity of water.
asked
Apr 2, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
solutions
electrochemistry
class-11
acids bases and salts
class-12
+1
vote
1
answer
Which of the following terms are unitless?
asked
Apr 1, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
physical world
measurement
cbse
class-11
class-12
introduction of physics
+2
votes
1
answer
Two elements $A' and $B' (atomic weights 75 and 16 respectively) combine to give a compound having 75.8% of $A'. The compound has the formula
asked
Mar 31, 2019
in
Chemistry
by
kratos
some basic concepts of chemistry
cbse
jee
class-9
jee mains
profit and loss
atoms and molecules
To see more, click for the
full list of questions
or
popular tags
.