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Recent questions in CBSE XI
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CBSE XI
CBSE XI
Math
Physics
Chemistry
Biology
What are the characteristic features of Euglenoids?
class11
biology
sec-b
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
Give the scientific name of the species of fungus:
class11
biology
sec-b
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
What are the demerits of five kingdom classification?
class11
biology
sec-b
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
Why are some fungi gouped under “fungi imperfectii?”
class11
biology
sec-b
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
How are virioids different from viruses?
class11
biology
sec-b
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
Write the importance of classification of organisms.
class11
biology
sec-b
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
Compare the salient features of Monera and Protists.
class11
biology
sec-b
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
There is a myth that immediately after a heavy rain in the forest, mushrooms appear in large number and makes a very large ring or circle which may be several meters in diameter. These are called “fairy rings”. Can you explain the myth of fairy rings in biological terms?
class11
biology
sec-b
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
Diatoms are also called “Pearls of the oceans”. Why? What is diatomaceous earth?
class11
biology
sec-b
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
How is the five kingdom classification advantageous over the two kingdom classification?
class11
biology
sec-b
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
Who discovered viroids?
class11
biology
sec-a
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
Why is Euglena known as mixotroph?
class11
biology
sec-a
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
What are halophiles?
class11
biology
sec-a
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
Name the two kingdoms in the two kingdom classification.
class11
biology
sec-a
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
When do bacteria form endospores?
class11
biology
sec-a
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
In the five kingdom system of classification of Whittaker, how many kingdoms are prokaryotes?
class11
biology
sec-a
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
A virus is considered to be a living organism and an obligate parasite when inside the host cell. But virus is not classified along with bacteria or fungi. What are the special characters of the virus that are similar to non living objects?
class11
biology
sec-a
biological classification
asked
Jul 17, 2019
by
swapnarajan1982
1
answer
Surface tension of a liquids 70 dynes/cm. In MKS system its value is
cbse11
physics
ch1
units-and-measurement
asked
Jul 17, 2019
by
meena.clay6
1
answer
Dimensions of $\large\frac{1}{2} \in_0 E^2$ where $T_n$ primitively and $E_n$ electric field
cbse11
physics
ch1
units-and-measurement
asked
Jul 17, 2019
by
meena.clay6
1
answer
Which one represent correct dimension of co efficient of viscosity
cbse11
physics
ch1
units-and-measurement
asked
Jul 16, 2019
by
meena.clay6
1
answer
The pair having same dimensional formula
cbse11
physics
ch1
units-and-measurement
asked
Jul 16, 2019
by
meena.clay6
1
answer
If C and L denote capacitance and independent then the dimensions of LC are
cbse11
physics
ch1
units-and-measurement
asked
Jul 16, 2019
by
meena.clay6
1
answer
If $x=\log_ea$ Maximum possible fractional error in x is
cbse11
physics
ch1
units-and-measurement
asked
Jul 16, 2019
by
meena.clay6
1
answer
If $T= 2 \pi \sqrt{\large\frac{ML^3}{3Yq}}$ find the dimension of q where T is time period of bar of mass M and length L and Yaingi modulus Y
cbse11
physics
ch1
units-and-measurement
asked
Jul 16, 2019
by
meena.clay6
1
answer
The common name of pea is simpler than its botanical name, Pisum sativum. Why then the simpler common names not used instead of complex scientific/botanical name in Biology?
class11
biology
sec-a
biological classification
asked
Jul 15, 2019
by
swapnarajan1982
1
answer
Suppose you accidently find an old preserved permanent slide without a label. In your effort to identify it you place the slide under the microscope and observe the following features. a) Unicellular b) well defined nucleus c) Bi flagellate –one flagellum lying longitudinally and the other transversely. What would you identify it as? Can you name the kingdom it belongs to?
class11
biology
sec-a
biological classification
asked
Jul 15, 2019
by
swapnarajan1982
1
answer
What is the principle underlying use of cyanobacteria in agricultural fields for crop improvement?
class11
biology
sec-a
biological classification
asked
Jul 15, 2019
by
swapnarajan1982
1
answer
Who is called “Father of classification”?
class11
biology
sec-a
biological classification
asked
Jul 15, 2019
by
swapnarajan1982
1
answer
Name the five kingdoms of 5 kingdom classification.
class11
biology
sec-a
biological classification
asked
Jul 15, 2019
by
swapnarajan1982
1
answer
Which of the following ion is the largest in size ?
cbse
class11
chemistry
ch3
classification-of-elements-and-periodicity-in-properties
asked
Jul 11, 2019
by
meena.clay6
1
answer
Which of these dose not reflect the periodicity of the elements
cbse
class11
chemistry
ch3
classification-of-elements-and-periodicity-in-properties
asked
Jul 10, 2019
by
meena.clay6
1
answer
Expand PPLO.
class11
biology
sec-a
biological classification
asked
Jul 9, 2019
by
swapnarajan1982
1
answer
Which statement is incorrect?
cbse
class11
chemistry
ch3
classification-of-elements-and-periodicity-in-properties
asked
Jul 9, 2019
by
meena.clay6
1
answer
Which out of $Cu^{2+},Fe^{2+}$ and $Cr^{3+}$ has highest paramagnetism and why
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 9, 2019
by
meena.clay6
1
answer
How many radial/spherical nodes will be present in the 5f orbitals?
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 9, 2019
by
meena.clay6
1
answer
What will be the maximum number of electrons having the same spin in an atom with n+l=4 ?
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 9, 2019
by
meena.clay6
1
answer
When is the energy of electron regarded as zero.
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 9, 2019
by
meena.clay6
1
answer
To which kingdom do multicellular decomposers belong to?
class11
biology
sec-a
biological classification
asked
Jul 9, 2019
by
swapnarajan1982
1
answer
Who introduced five kingdom classification of organisms?
class11
biology
sec-a
biological classification
asked
Jul 9, 2019
by
swapnarajan1982
1
answer
Metabolism is defining feature of all living organisms without exception. Isolated metabolic reactions in vitro are not living things but surely living reactions. Comment.
class11
biology
sec-d
the living world
asked
Jul 9, 2019
by
swapnarajan1982
1
answer
Define a taxon. What is meant by a taxonomic hierarchy? Give a diagram from the lowest to highest category for a plant and an animal. What happens to the number of individuals and number of shared characters as we go up the taxonomical hierarchy?
class11
biology
sec-d
the living world
asked
Jul 9, 2019
by
swapnarajan1982
1
answer
What are taxonomical aids? Give the importance of herbaria and museums. How are botanical gardens and zoological parks useful in conserving biodiversity?
class11
biology
sec-d
the living world
asked
Jul 9, 2019
by
swapnarajan1982
1
answer
How many unpaired electrons are present in $Pd (Z = 46)$?
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 8, 2019
by
meena.clay6
1
answer
Which element does not have any neutron?
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 8, 2019
by
meena.clay6
1
answer
The increasing order (lowest first) for the values of e/m (charge/mass) for
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 5, 2019
by
meena.clay6
1
answer
Atomic number of an element is equal to the number of
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 3, 2019
by
meena.clay6
1
answer
Which out of $Cu^{2+},Fe^{2+}$ and $Cr^{3+}$ has highest paramagnetism and why
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 3, 2019
by
meena.clay6
1
answer
How many radial/spherical nodes will be present in the 5f orbitals?
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 3, 2019
by
meena.clay6
1
answer
What will be the maximum number of electrons having the same spin in an atom with n+l=4 ?
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 3, 2019
by
meena.clay6
1
answer
When is the energy of electron regarded as zero.
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 3, 2019
by
meena.clay6
1
answer
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