Chemistry-
General
Easy
Question
The potential energies of first, second and third Bohr’s orbits of He+ cation are E1,E2 and E3. The correct sequence of these energies is-
- E1>E2>E3
- E1=E2>E3
- E1=E2=E3
- E3>E2>E1
The correct answer is: E1=E2>E3
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Maths-
In ![straight triangle A B C comma left parenthesis a minus b right parenthesis squared cos squared invisible function application c over 2 plus left parenthesis a plus b right parenthesis squared sin squared invisible function application c over 2 equals](data:image/png;base64,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)
In ![straight triangle A B C comma left parenthesis a minus b right parenthesis squared cos squared invisible function application c over 2 plus left parenthesis a plus b right parenthesis squared sin squared invisible function application c over 2 equals](data:image/png;base64,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)
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Tangents drawn to parabola
= 4ax at the points A and B intersect at C. Ordinate of A, C and B forms
Tangents drawn to parabola
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maths-General
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Agasabsorbsaphotonof300nmandthenre-emittstwophotons.Onephotonhasa wavelength600nm.Thewavelengthofsecond photonis-
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chemistry-General
chemistry-
Which orbital is respresented by wave function Ψ310
Which orbital is respresented by wave function Ψ310
chemistry-General
chemistry-
What transition in He+ will have the same λ as the I line in lyman series of H-atom
What transition in He+ will have the same λ as the I line in lyman series of H-atom
chemistry-General
chemistry-
In 7N14 if mass attributed to electron were doubled& the mass attributed to protons were halved, the atomic mass would become approximately:
In 7N14 if mass attributed to electron were doubled& the mass attributed to protons were halved, the atomic mass would become approximately:
chemistry-General
Maths-
olution o
is
olution o
is
Maths-General
chemistry-
A particle X moving with a certain velocity has a debroglie wave length of 1Å.If particle Y has a mass of 25% that of X and velocity 75% that of X, debroglies wavelength of Y will be-
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chemistry-General
chemistry-
In n&l are principal and azimuthal quantum no. respectively then the experession for
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In n&l are principal and azimuthal quantum no. respectively then the experession for
calculating the total no. of electron in any level is-
chemistry-General
chemistry-
Which is correct relationship:
Which is correct relationship:
chemistry-General
chemistry-
In which transition, one quantum of energy is emmited:
In which transition, one quantum of energy is emmited:
chemistry-General
chemistry-
For any H like system, the ratio of velocities of I,II&III orbit i.e.V1 :V2 :V3 will be
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chemistry-General
chemistry-
An orbital with ι=0 is Symmetrical about the:
An orbital with ι=0 is Symmetrical about the:
chemistry-General
chemistry-
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chemistry-General
chemistry-
An isotone of 32Ge76 is
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ii)33As
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iv)34Se78
An isotone of 32Ge76 is
i) 32Ge
ii)33As
iii)34Se77
iv)34Se78
chemistry-General