Chemistry-
General
Easy
Question
The compounds P, Q and S
P) 
Q) 
S) 
were separately subjected to nitration using 
mixture. The major product formed in each case respectively, is
- All the above
The correct answer is:
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The total number of basic groups in the following form of lysine is -
The total number of basic groups in the following form of lysine is -
chemistry-General
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The decreasing order of nucleophilicity among the nucleophiles
a) 
b) 
c) 
d) 
is -
The decreasing order of nucleophilicity among the nucleophiles
a)
b)
c)
d) is -
chemistry-General
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Extractionofaluminiumcanbeunderstoodby:
Electrolytic reduction of 
Electrolytic:( +Cryolite+
)
Cathode: Carbon inside the Fe-container
Anode: Graphite rods
Cokepowderisspreadoverthemoltenelectrolyteto:</span
Extractionofaluminiumcanbeunderstoodby:
Electrolytic reduction of
Electrolytic:( +Cryolite+)
Cathode: Carbon inside the Fe-container
Anode: Graphite rods
Cokepowderisspreadoverthemoltenelectrolyteto:</span
chemistry-General
chemistry-
.Extractionofaluminiumcanbeunderstoodby:
Electrolytic reduction of
Electrolytic:( +Cryolite+)
Cathode: Carbon inside the Fe-container
Anode: Graphite rods
Thepurposeofaddingcryoliteis:</span
.Extractionofaluminiumcanbeunderstoodby:
Electrolytic reduction of
Electrolytic:( +Cryolite+)
Cathode: Carbon inside the Fe-container
Anode: Graphite rods
Thepurposeofaddingcryoliteis:</span
chemistry-General
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Which of the followingisincorrectonthebasisoftheaboveEllinghamdiagramforcarbon?</span
Which of the followingisincorrectonthebasisoftheaboveEllinghamdiagramforcarbon?</span
chemistry-General
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Carbon cannot be used to produce magnesium by chemical reduction of MgO because:
Carbon cannot be used to produce magnesium by chemical reduction of MgO because:
chemistry-General
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G° vsT plotinEllingham diagramslopesdownwardforthereaction:</span
G° vsT plotinEllingham diagramslopesdownwardforthereaction:</span
chemistry-General
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In the above radioactive decay C is stable nucleus. Then:
In the above radioactive decay C is stable nucleus. Then:
physics-General
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Protons and singly ionized atoms of 
are passed in turn (which means one after the other and not at the same time) through a velocity selector and then enter a uniform magnetic field. The protons describe semicircles of radius 10 mm. The separation between the ions of 
and 
after describing semicircle is given by
Protons and singly ionized atoms of are passed in turn (which means one after the other and not at the same time) through a velocity selector and then enter a uniform magnetic field. The protons describe semicircles of radius 10 mm. The separation between the ions of and after describing semicircle is given by
physics-General
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The ratio of 
to 
when is maximum is :
The ratio of to when is maximum is :
physics-General
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Pertain to the statement and diagram below :
he figure given shows an energy level diagram for the hydrogen atom. Several transitions are marked as I,II,III, _. The diagram is only indicative and not to scale.
In which transition is a Balmer series photon absorbed ?
Pertain to the statement and diagram below :
he figure given shows an energy level diagram for the hydrogen atom. Several transitions are marked as I,II,III, _. The diagram is only indicative and not to scale.
In which transition is a Balmer series photon absorbed ?
physics-General
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When an electron accelerated by potential difference U is bombarded on a specific metal, the emitted X-ray spectrum obtained is shown in adjoining graph. If the potential difference is reduced to U/3, the correct spectrum is
When an electron accelerated by potential difference U is bombarded on a specific metal, the emitted X-ray spectrum obtained is shown in adjoining graph. If the potential difference is reduced to U/3, the correct spectrum is
physics-General
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In a historical experiment to determine Planck’s constant, a metal surface was irradiated with light of different wavelengths. The emitted photoelectron energies were measured by applying a stopping potential. The relevant data for the wavelength (
) of incident light and the corresponding stopping potential (
) are given below:
Given that 
, Planck’s constant (in units of J s) found from such an experiment is
In a historical experiment to determine Planck’s constant, a metal surface was irradiated with light of different wavelengths. The emitted photoelectron energies were measured by applying a stopping potential. The relevant data for the wavelength () of incident light and the corresponding stopping potential ( ) are given below:
Given that , Planck’s constant (in units of J s) found from such an experiment is
physics-General
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The graph between 1/
and stopping potential (V) of three metals having work functions 
and 
in an experiment of photo–electric effect is plotted as shown in the figure. Which of the following statement(s) is/are correct ? [Here is the wavelength of the incident ray].
The graph between 1/ and stopping potential (V) of three metals having work functions and in an experiment of photo–electric effect is plotted as shown in the figure. Which of the following statement(s) is/are correct ? [Here is the wavelength of the incident ray].
physics-General
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The graph is showing the photocurrent with the applied voltage of a photoelectric effect experiment. Then
The graph is showing the photocurrent with the applied voltage of a photoelectric effect experiment. Then
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