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JEEMAIN and NEET
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Chemistry
Chemistry
Some Basic concepts in Chemistry
Atomic Structure
Classification of Elements and Periodicity in Properties
Chemical Bonding and Molecular Structure
Chemical Thermodynamics
Equilibrium
Redox Reactions
Hydrogen
s-Block Elements
p-Block Elements
P-Block elements (Group-13 and Group-14)
Hydrocarbons
Some Basic principles of Organic chemistry
Environmental Chemistry
States of Matter: Liquids and Gases
States of Matter: Solid State
Solutions
Electrochemistry
Surface Chemistry
General Principals and Processes of Isolation of Metals
p-Block elements (Group-15 to Group-18)
d-and-f-Block Elements
Co-ordination Compounds
Halogens
Oxygen: Alchohols, Phenols and Ethers
Nitrogen
Polymers
Biomolecules
Chemistry in everyday life
Practical Chemistry
Chemical Kinetics
Purification and Characterisation of Organic Compounds
Oxygen: Aldehydes, Ketones and Carboxylic Acids
If the electron energy is -3.4 eV , Find the principal quantum number of H-atom?
sat
chemistry
atomic-structure
jeemain
physical-chemistry
class11
unit2
quantum-mechanical-model
medium
q146
asked
Jan 24, 2014
by
sharmaaparna1
1
answer
The hydride gap is used for element of group?
jeemain
chemistry
class11
hydrogen
unit9
q75
difficult
asked
Jan 24, 2014
by
sreemathi.v
1
answer
The velocity of an electron in a certain Bohr's orbit of H-atom bears the ratio 1:275 to the velocity of light. Then find the quantum numbers (n) of orbit.
jeemain
chemistry
physical-chemistry
class11
unit-2
atomic-structure
bhor's-model
medium
q145
asked
Jan 24, 2014
by
sharmaaparna1
1
answer
An ion $Mn^{a+}$ has the magnetic moment equal to 4.9bm. What is the value of a ?
sat
chemistry
atomic-structure
jeemain
physical-chemistry
class11
unit2
quantum-mechanical-model
easy
q144
asked
Jan 24, 2014
by
sharmaaparna1
1
answer
Which element form Hydride?
jeemain
chemistry
class11
hydrogen
unit9
q74
difficult
asked
Jan 24, 2014
by
sreemathi.v
1
answer
Which is polymeric hydride?
jeemain
chemistry
class11
hydrogen
unit9
q73
difficult
asked
Jan 24, 2014
by
sreemathi.v
1
answer
The coordination no of Na is solid NaH is
jeemain
chemistry
class11
hydrogen
unit9
q72
difficult
asked
Jan 24, 2014
by
sreemathi.v
1
answer
Hydrogen reacts with different elements to from variety of hydrides.$1^{st}$ group and $2^{nd}$ group elements form white,crystalline ionic hydride their stability depends upon ionic characters and lattic energy covalent hydride is common type of hydrides transition metals form interstitial hydrides.Which ionic hydride is stable up to its mp?
jeemain
chemistry
class11
hydrogen
unit9
q71
difficult
asked
Jan 24, 2014
by
sreemathi.v
1
answer
Hyperol is an addition product of $H_2O_2$ with
jeemain
chemistry
class11
hydrogen
unit9
q70
medium
asked
Jan 24, 2014
by
sreemathi.v
1
answer
The gas liberated when alkaline formaldehyde solution is reacted with hydrogen peroxide in the presence of pyragahol is
jeemain
chemistry
class11
hydrogen
unit9
q69
medium
asked
Jan 24, 2014
by
sreemathi.v
1
answer
What is the oxidation state of Fe in the product formed when acidified pottasium ferrocyanide treated with $H_2O_2$?
jeemain
chemistry
class11
hydrogen
unit9
q68
medium
asked
Jan 24, 2014
by
sreemathi.v
1
answer
Which of the following is not a true peroxide
jeemain
chemistry
class11
hydrogen
unit9
q67
medium
asked
Jan 24, 2014
by
sreemathi.v
1
answer
$H_2O_2$ is obtained by action of dil $H_2SO_4$ on
jeemain
chemistry
class11
hydrogen
unit9
q66
medium
asked
Jan 24, 2014
by
sreemathi.v
1
answer
$H_2O_2$ reacts with acidified $K_2Cr_2O_7$ the product formed is
jeemain
chemistry
class11
hydrogen
unit9
q65
medium
asked
Jan 24, 2014
by
sreemathi.v
1
answer
The formula of pertitanic acid is
jeemain
chemistry
class11
hydrogen
unit9
q64
medium
asked
Jan 24, 2014
by
sreemathi.v
1
answer
Which of the following statement is incorrect
jeemain
chemistry
class11
hydrogen
unit9
q63
medium
asked
Jan 24, 2014
by
sreemathi.v
1
answer
In acidic solution $H_2O_2$ oxidises $Hg$ to
jeemain
chemistry
class11
hydrogen
unit9
q62
medium
asked
Jan 24, 2014
by
sreemathi.v
1
answer
$H_2O_2$ oxidises $H_2S$ to
jeemain
chemistry
class11
hydrogen
unit9
q61
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
$PbS+H_2O_2\rightarrow H_2O$+________
jeemain
chemistry
class11
hydrogen
unit9
q60
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
When $H_2O_2$ reacts with chlorine the product obtained is
jeemain
chemistry
class11
hydrogen
unit9
q59
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Decomposition of $H_2O_2$ is prevented by adding
jeemain
chemistry
class11
hydrogen
unit9
q58
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
$CO+H_2$ is known as
jeemain
chemistry
class11
hydrogen
unit9
q57
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
The volume of oxygen liberated at STP when 10ml of 15v-$H_2O_2$ decomposes
jeemain
chemistry
class11
hydrogen
unit9
q56
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
One ml of $H_2O_2$ solution gives 50ml of $O_2$ at NTP,so it is
jeemain
chemistry
class11
hydrogen
unit9
q55
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
The % of by weight of hydrogen $H_2O_2$ is
jeemain
chemistry
class11
hydrogen
unit9
q54
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
The approx concentration of $H_2O_2$ perhydrol is
jeemain
chemistry
class11
hydrogen
unit9
q53
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Weight of $H_2O_2$ present in 560ml of 20vol $H_2O_2$ solution is approx
jeemain
chemistry
class11
hydrogen
unit9
q52
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
The number of electrons involved in the manufacture of 1mole of $H_2O_2$ from 50% of $H_2SO_4$
jeemain
chemistry
class11
hydrogen
unit9
q51
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
The volume strength of $1N-H_2O_2$ solution is
jeemain
chemistry
class11
hydrogen
unit9
q50
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
50ml of certain sample of $H_2O_2$ gives 1200ml of $O_2$ at STP.The volume strength of $H_2O_2$ is
jeemain
chemistry
class11
hydrogen
unit9
q49
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Strength of $2N$ $H_2O_2$ solution is approx
jeemain
chemistry
class11
hydrogen
unit9
q48
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
The volume of oxygen liberated at STP when 100ml of 15 volume $H_2O_2$ decomposes
jeemain
chemistry
class11
hydrogen
unit9
q47
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
The volume strength of $3N-H_2O_2$ solution is
jeemain
chemistry
class11
hydrogen
unit9
q46
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
In $10^5$g of a sample of water contained 16.2g of $Ca(HCO_3)_2$ then the hardness is
jeemain
chemistry
class11
hydrogen
unit9
q45
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
If 1000g of a water sample contains 10g of $CaCO_3$ then the hardness of that water sample is
jeemain
chemistry
class11
hydrogen
unit9
q44
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
The weight of one mole of heavy water is
jeemain
chemistry
class11
hydrogen
unit9
q43
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
An oil drop has $8.01\times10^{-19}$ C charge. Calculate the number of electrons in this drop.
jeemain
chemistry
physical-chemistry
class11
unit2
atomic-structure
atomic-models-(rutherford-and-thomson)
easy
q143
asked
Jan 23, 2014
by
sharmaaparna1
1
answer
A sample of hard water contains 68ppm of $CaSO_4$,then the hardness of the same sample of water is
jeemain
chemistry
class11
hydrogen
unit9
q42
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
The percentage of deuterium in heavy water
jeemain
chemistry
class11
hydrogen
unit9
q41
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
In $H_2O_2$ molecule the $O-O$ bond length is
jeemain
chemistry
class11
hydrogen
unit9
q40
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Hyperol is a addition product of $H_2O_2$ with
jeemain
chemistry
class11
hydrogen
unit9
q39
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
The wavelength of $m^{th}$ line Balmer series for an orbital is $4103 A^{\large\circ}$. What is the value of $m$?
jeemain
chemistry
physical-chemistry
class11
atomic-structure
bhor's-model
unit2
medium
q142
asked
Jan 23, 2014
by
sharmaaparna1
1
answer
Which of the following is reduced by $H_2O_2$ in acid medium
jeemain
chemistry
class11
hydrogen
unit9
q38
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Which of the following is linear molecule
jeemain
chemistry
class11
hydrogen
unit9
q37
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
An aqueous solution of $H_2O_2$ is
jeemain
chemistry
class11
hydrogen
unit9
q36
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
A reaction of $H_2O_2$ with urea is example of
jeemain
chemistry
class11
hydrogen
unit9
q35
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
At a pressure 68mm.$H_2O_2$ boils at temperture
jeemain
chemistry
class11
hydrogen
unit9
q34
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Calculate the number of waves made by a Bohr's electron in one complete revolution in its 3rd orbit of H-atom
jeemain
chemistry
physical-chemistry
atomic-structure
bhor's-model
unit2
class11
difficult
q141
asked
Jan 23, 2014
by
sharmaaparna1
1
answer
$H_2O_2+H_2O\rightarrow H_3O^-+HO_2^-$ the reaction indicates
jeemain
chemistry
class11
hydrogen
unit9
q33
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Which of the following is oxidized by $H_2O_2$ in the alkaline medium
jeemain
chemistry
class11
hydrogen
unit9
q32
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
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