NCERT Exemplar Class 11
Calculate the energy required for the process , He+(g)→He2+(g)+e The ionization energy for the H-atom in the grounds state is 2.18×10^−18J atom^−1.
12
Nov
Calculate the energy required for the process , He+(g)→He2+(g)+e The ionization energy for the H-atom in the grounds state is 2.18×10^−18J atom^−1. Calculate the energy required for the process He+(g)→He2+(g)+e The ionization energy for the H-atom in the grounds state is 2.18×10^−18J atom^−1. November 12, 2020 Category: Chapter 2 - Atomic Structure , Chemistry , [...]
What transition in the hydrogen spectrum would have the same wavelength as the Balmer transition n=4 to n=2 of He⊕ spectrum?
12
Nov
What transition in the hydrogen spectrum would have the same wavelength as the Balmer transition n=4 to n=2 of He⊕ spectrum? What transition in the hydrogen spectrum would have the same wavelength as the Balmer transition n=4 to n=2 of He⊕ spectrum? November 12, 2020 Category: Chapter 2 - Atomic Structure , Chemistry , NCERT [...]
Figures (a) and (b) refer to the steady flow of a (non-viscous) liquid. Which of the two figures is incorrect ? Why ?
12
Nov
Figures (a) and (b) refer to the steady flow of a (non-viscous) liquid. Which of the two figures is incorrect ? Why ? Figures (a) and (b) refer to the steady flow of a (non-viscous) liquid. Which of the two figures is incorrect ? Why ? November 12, 2020 Category: Chapter 14 - Waves , [...]
How many electron in an atom may have the following quantum number ? (a) n=4,ms=−1/2 (b) n=3,l=0
12
Nov
How many electron in an atom may have the following quantum number ? (a) n=4,ms=−1/2 (b) n=3,l=0 How many electron in an atom may have the following quantum number ? (a) n=4 l=0 ms=−1/2 (b) n=3 November 12, 2020 Category: Chapter 2 - Atomic Structure , Chemistry , NCERT Exemplar Class 11 ,
Show that the circumference of the Bohr orbit for the hydrogen atom is an integral multiple of the de Broglie wavelength associated with the electron revolving around the orbit.
12
Nov
Show that the circumference of the Bohr orbit for the hydrogen atom is an integral multiple of the de Broglie wavelength associated with the electron revolving around the orbit. Show that the circumference of the Bohr orbit for the hydrogen atom is an integral multiple of the de Broglie wavelength associated with the electron revolving [...]
(i) An atomic orbital has n=3. What are the possible values of l and ml ? (ii) List the quantum numbers (ml and l) of electrons for 3d-orbital. (iii) Which of the following orbitals are possible ? 1p,2s,2pand3f.
12
Nov
(i) An atomic orbital has n=3. What are the possible values of l and ml ? (ii) List the quantum numbers (ml and l) of electrons for 3d-orbital. (iii) Which of the following orbitals are possible ? 1p,2s,2pand3f. (i) An atomic orbital has n=3. What are the possible values of l and ml ? (ii) [...]
Glycerine flows steadily through a horizontal tube of length 1.5 cm and radius 1cm. If the amount of glycerine collected per second at one end is 4×10^−3kg/s. What is the pressure difference between the ends of the tube (Density of glycerine =1.3×10^3kg^−3 viscosity of glycerine – 0.83Pas)
12
Nov
Glycerine flows steadily through a horizontal tube of length 1.5 cm and radius 1cm. If the amount of glycerine collected per second at one end is 4×10^−3kg/s. What is the pressure difference between the ends of the tube (Density of glycerine =1.3×10^3kg^−3 viscosity of glycerine – 0.83Pas) 2 loops 3 loops and 4 loops Show [...]
An electron is in one of the 3d orbitals. Give the possible values of n, l and ml for this electron.
12
Nov
An electron is in one of the 3d orbitals. Give the possible values of n, l and ml for this electron. An electron is in one of the 3d orbitals. Give the possible values of n l and ml for this electron. November 12, 2020 Category: Chapter 2 - Atomic Structure , Chemistry , NCERT [...]
What is the lowest value of n that allow g orbitals to exist?
12
Nov
What is the lowest value of n that allow g orbitals to exist? What is the lowest value of n that allow g orbitals to exist? November 12, 2020 Category: Chapter 2 - Atomic Structure , Chemistry , NCERT Exemplar Class 11 ,
In a test experiment on a model aeroplane in a wind tunnel, the flow speeds on the upper and lower surfaces of the wing are 70 ms^−1 and 63 ms^−1 respectively. What is the lift on the wing if its area is 2.5 m^2 ? Take the density of air to be 1.3 kgm^−3.
12
Nov
In a test experiment on a model aeroplane in a wind tunnel, the flow speeds on the upper and lower surfaces of the wing are 70 ms^−1 and 63 ms^−1 respectively. What is the lift on the wing if its area is 2.5 m^2 ? Take the density of air to be 1.3 kgm^−3. In [...]