Maths-
Equation of sphere passing through the points (2,0,0),(0,2,0),(0,0,2) and having least possible radius is
Maths-General
Answer:The correct answer is:
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biology
Identify 
to 
and choose the correct combination
A-mRNA, B-nucleus, C-Hormone receptor complex, D-hormone
Identify to and choose the correct combination
biologyGeneral
A-mRNA, B-nucleus, C-Hormone receptor complex, D-hormone
biology
In prokaryotes, chromatophores are
In prokaryotes, chromatophores are
biologyGeneral
biology
Choose the correct combination of labelling for the hormonal control of female reproductive system.
A 
GnRH
B
LH/FSH
C Oestrogen or Progesterone
D Uterus
GnRHB
LH/FSHC
Oestrogen or ProgesteroneD
UterusChoose the correct combination of labelling for the hormonal control of female reproductive system.
biologyGeneral
A GnRH
BLH/FSH
C Oestrogen or Progesterone
D Uterus
GnRHB
LH/FSHC
Oestrogen or ProgesteroneD
Uterusphysics-
The energy levels of the hydrogen spectrum is shown in figure. There are some transition 
and 
Transition 
and 
respectively represent
Transition A 
to 1) : Series limit of Lyman series
Transition B (
to 
) : Third spectral line of Balmer series
Transition C ( to 
) : Second spectral line of Paschen series
to 1) : Series limit of Lyman seriesTransition B (
to ) : Third spectral line of Balmer seriesTransition C (
to ) : Second spectral line of Paschen seriesThe energy levels of the hydrogen spectrum is shown in figure. There are some transition and Transition and respectively represent
physics-General
Transition A to 1) : Series limit of Lyman series
Transition B ( to ) : Third spectral line of Balmer series
Transition C ( to ) : Second spectral line of Paschen series
to 1) : Series limit of Lyman seriesTransition B (
to ) : Third spectral line of Balmer seriesTransition C (
to ) : Second spectral line of Paschen seriesphysics-
The approximate nuclear radius is proportional to ( is the mass number and 
the atomic number)
Experimentally it is found that the volume of a nucleus is directly proportional to its mass number. From this it is concluded that the density of each nucleus is uniform, it does not depend on the size of the nucleus.
It the nucleus is assumed to be a sphere of radius
and its mass number is , then volume of nucleus
Thus,
Or
the radius of nucleus is directly proportional to the cube root(or 
power) of its mass number A.
Aliter
Nuclear radius
It the nucleus is assumed to be a sphere of radius
and its mass number is , then volume of nucleusThus,
Or
the radius of nucleus is directly proportional to the cube root(or power) of its mass number A.Aliter
Nuclear radius
The approximate nuclear radius is proportional to ( is the mass number and the atomic number)
physics-General
Experimentally it is found that the volume of a nucleus is directly proportional to its mass number. From this it is concluded that the density of each nucleus is uniform, it does not depend on the size of the nucleus.
It the nucleus is assumed to be a sphere of radius and its mass number is , then volume of nucleus
Thus,
Or
the radius of nucleus is directly proportional to the cube root(or power) of its mass number A.
Aliter
Nuclear radius
It the nucleus is assumed to be a sphere of radius
and its mass number is , then volume of nucleusThus,
Or
the radius of nucleus is directly proportional to the cube root(or power) of its mass number A.Aliter
Nuclear radius
biology
The RER in the cell synthesised protein which would be later used in building the plasma membrane. But it is observed that the protein in the membrane is slightly different from the protein made in the RER. The protein was probably modified in another cell organelle.
Identify the organelle in the given diagram.
The plasma membrane consists of glycoproteins. In Golgi bodies, glycosylation of proteins takes place, 
addition of carbohydrate to produce glycoproteins
addition of carbohydrate to produce glycoproteinsThe RER in the cell synthesised protein which would be later used in building the plasma membrane. But it is observed that the protein in the membrane is slightly different from the protein made in the RER. The protein was probably modified in another cell organelle.
Identify the organelle in the given diagram.
biologyGeneral
The plasma membrane consists of glycoproteins. In Golgi bodies, glycosylation of proteins takes place, addition of carbohydrate to produce glycoproteins
addition of carbohydrate to produce glycoproteinsphysics-
The radius of germanium (
) nuclide is measured to be twice the radius of 
. The number of nucleons in Ge are
Let radius of nucleus be 
. Then radius of germanium (Ge) nucleus will be
.
Radius ofnucleus is given by
Hence,
Thus, in germanium () nucleus number of nucleons is 72.
nucleus be . Then radius of germanium (Ge) nucleus will be.Radius ofnucleus is given by
Hence,
Thus, in germanium (
) nucleus number of nucleons is 72.The radius of germanium () nuclide is measured to be twice the radius of . The number of nucleons in Ge are
physics-General
Let radius of nucleus be . Then radius of germanium (Ge) nucleus will be.
Radius ofnucleus is given by
Hence,
Thus, in germanium () nucleus number of nucleons is 72.
nucleus be . Then radius of germanium (Ge) nucleus will be.Radius ofnucleus is given by
Hence,
Thus, in germanium (
) nucleus number of nucleons is 72.biology
Go through the sectional view of a mitochondrion showing the different parts and identify the structures to 
A-Outer membrane, B-Inner membrane, C-Matrix, D-Inter-membrane space, E-Cristae
Go through the sectional view of a mitochondrion showing the different parts and identify the structures to
biologyGeneral
A-Outer membrane, B-Inner membrane, C-Matrix, D-Inter-membrane space, E-Cristae
biology
Which of the following is the correct representation of 
and in the given figure of a chromosome?
A-Centromere, B-Satellite, C-Secondary constriction
Which of the following is the correct representation of and in the given figure of a chromosome?
biologyGeneral
A-Centromere, B-Satellite, C-Secondary constriction
biology
The following diagram shows some of the missing structures in a plant cell (A-E). Identify the structures
A – Plasmodesmata
B – Rough Endoplasmic Reticulum
C – Golgi apparatus
D – Mitochondrion
E – Ribosomes
B – Rough Endoplasmic Reticulum
C – Golgi apparatus
D – Mitochondrion
E – Ribosomes
The following diagram shows some of the missing structures in a plant cell (A-E). Identify the structures
biologyGeneral
A – Plasmodesmata
B – Rough Endoplasmic Reticulum
C – Golgi apparatus
D – Mitochondrion
E – Ribosomes
B – Rough Endoplasmic Reticulum
C – Golgi apparatus
D – Mitochondrion
E – Ribosomes
biology
Correlate the given features of animal cells (I to VII) with their respective parts ( to 
)
I)The structure replicates during mitosis and generates the spindle
II)Major site for synthesis of lipid
III)Power house of the cell
IV)store house of digestive enzyme
V)Increase the surface are for the absorption of materials
VI)Site of glycolysis
VII)Site for active ribosomal RNA synthesis
The correct option is
i) The structure replicates during mitosis and generates the spindle – L
ii) Major site for synthesis of lipid – B
iii) Power house of the cell – H
iv) Store house of digestive enzyme – J
v) Increase the surface area for the absorption materials – N
vi) Site of glycolysis – F
vii) Site for active ribosomal RNA synthesis – D
ii) Major site for synthesis of lipid – B
iii) Power house of the cell – H
iv) Store house of digestive enzyme – J
v) Increase the surface area for the absorption materials – N
vi) Site of glycolysis – F
vii) Site for active ribosomal RNA synthesis – D
Correlate the given features of animal cells (I to VII) with their respective parts ( to )
I)The structure replicates during mitosis and generates the spindle
II)Major site for synthesis of lipid
III)Power house of the cell
IV)store house of digestive enzyme
V)Increase the surface are for the absorption of materials
VI)Site of glycolysis
VII)Site for active ribosomal RNA synthesis
The correct option is
biologyGeneral
i) The structure replicates during mitosis and generates the spindle – L
ii) Major site for synthesis of lipid – B
iii) Power house of the cell – H
iv) Store house of digestive enzyme – J
v) Increase the surface area for the absorption materials – N
vi) Site of glycolysis – F
vii) Site for active ribosomal RNA synthesis – D
ii) Major site for synthesis of lipid – B
iii) Power house of the cell – H
iv) Store house of digestive enzyme – J
v) Increase the surface area for the absorption materials – N
vi) Site of glycolysis – F
vii) Site for active ribosomal RNA synthesis – D
biology
Identify to in the diagrammatic representation of internal structure of centrioles
A-Plasma membrane, B-Interdoublet bridge, C-Central microtubule and D-Radial spoke
Identify to in the diagrammatic representation of internal structure of centrioles
biologyGeneral
A-Plasma membrane, B-Interdoublet bridge, C-Central microtubule and D-Radial spoke
chemistry-
Which alkali metal floats over cold water without any reaction?
4, Na, k all are less denses them water among these first group Li is very less reactive
Which alkali metal floats over cold water without any reaction?
chemistry-General
4, Na, k all are less denses them water among these first group Li is very less reactive
chemistry-
The most suitable reagent of r the conversion of RCH2OH → RCHO is
Refer to Comprehensive Review
The most suitable reagent of r the conversion of RCH2OH → RCHO is
chemistry-General
Refer to Comprehensive Review
maths-