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Recent questions tagged biology
Questions
The inflorescence in case of Yucca belonging to Liliaceae is
jeemain
eamcet
biology
1999
q21
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
Triganella belongs to the following family
jeemain
eamcet
biology
1999
q20
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
The stele in the root of the following is tetrach
jeemain
eamcet
biology
1999
q19
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
As compared to sclerenchyma, parenchyma does NOT function in
jeemain
eamcet
biology
1999
q18
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
The genetical importance of raising haploids in higher plants through tissue culture lies their use in the production of
jeemain
eamcet
biology
1999
q17
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
Tyloses are observed in the lumen of
jeemain
eamcet
biology
1999
q16
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
The haploid chromosome number in Saccharum officinale is as many times greater in the following as that of Zeamays
jeemain
eamcet
biology
1999
q15
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
Asafoetida is a
jeemain
eamcet
biology
1999
q14
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
The scientific term which is not related to the primary constriction of a chromosome is
jeemain
eamcet
biology
1999
q13
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
Scale bark is seen in
jeemain
eamcet
biology
1999
q12
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
The position of the micropyle' found in an orthotropous ovule are turned down about $160^{\circ}$ ( degrees ) with reference to the funicle. In addition the ovule and embryo sac are curved. Such a type of ovule is called as
jeemain
eamcet
biology
1999
q11
asked
Nov 22, 2013
by
thanvigandhi_1
1
answer
Free central placentation is found in
jeemain
eamcet
biology
1999
q10
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
Modification of bract in Typhonium is a
jeemain
eamcet
biology
1999
q9
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
Geitonogamy is found in
jeemain
eamcet
biology
1999
q8
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
In Fabaceae, the floral structures which enclose the essential organs are
jeemain
eamcet
biology
1999
q7
asked
Nov 22, 2013
by
thanvigandhi_1
1
answer
Inflorescence in Jatropha is a
jeemain
eamcet
biology
1999
q6
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
The following plant produces both offsets and bulbils
jeemain
eamcet
biology
1999
q5
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
The following features are found in both Balanophora and Casuarina
jeemain
eamcet
biology
1999
q4
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
Root, stem and leaf are all modified in
jeemain
eamcet
biology
1999
q3
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
Balancing roots are seen in
jeemain
eamcet
biology
1999
q2
asked
Nov 22, 2013
by
thanvigandhi_1
1
answer
The earlier institute established at Pusa, is now called as
jeemain
eamcet
biology
1999
q1
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
Given $NaSO_4.10H_2O (s) \rightleftharpoons NaSO_4 (s) + 10H_2O (g) ; K_p =4.08 \times 10^{-25} $ and vapour pressure of water at $0^\circ$C = 4.58 Torr. At what relative humidity will $Na_2SO_4$ be deliquescent when exposed to the air at $0^\circ$C ?
jeemain
aipmt
chemistry
equilibrium
difficult
q29
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
For the equilibrium $2SO_2 + O_2 \rightleftharpoons 2SO_3$ we start with 2 moles of $SO_2$ and 1 mole of $O_2$ at 3 atm. When equilibrium is attained, pressure changes to 2.5 atm. Hence, $K_p$ is:
jeemain
aipmt
chemistry
equilibrium
difficult
q30
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
For a very small extent of dissociation of $PCl_5(g) \rightleftharpoons PCl_3(g) + Cl_2(g)$ is a gaseous phase reaction then degree of dissociation, x:
jeemain
aipmt
chemistry
equilibrium
medium
q28
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
$PCl_5(g) \rightleftharpoons PCl_3(g) + Cl_2 (g)$ In the dissociation of $PCl_5, x $ varies with $\frac{D}{d}$ according to:
jeemain
aipmt
chemistry
equilibrium
medium
q27
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
For the reversible reaction equilibrium is $ N_2(g) + O_2(g) \overset{\overset{k_r}{\rightleftharpoons}}{_{k_f}} 2NO(g), $ $C_0 = Ce^{-2.1 \times 10^{-3} t} $ for the forward reaction and $C'_0 = C'e^{-4.2 \times 10^{-4}} t$ for the backward reaction, hence, if both forward and backward reactions are first order reactions then $K_c$ for the above equilibrium is:
jeemain
aipmt
chemistry
equilibrium
medium
q26
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
$ Solute + H_2O \rightleftharpoons solution; \Delta H=\pm x $ For the given equation, Solubility(S) of a solute in the solvent (say $H_2O$) is given by $S = A e^{-\frac{\Delta H}{RT}}$ For a given solution, variation of log S with temperature is shown graphically. Hence, Solute is:
jeemain
aipmt
chemistry
equilibrium
medium
q25
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
$A + B \rightleftharpoons C + D$ One mole each of A and B and 3 moles each of C and D are placed in 1L flask, if equilibrium constant is 2.25. Equilibrium concentrations of A and C will be in the ratio:
jeemain
aipmt
chemistry
equilibrium
difficult
q24
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
Volume of the flask in which species are transferred is double of the earlier flask. In which of the following reversible reactions, equilibrium will be shifted in the forward direction?
jeemain
aipmt
chemistry
equilibrium
medium
q23
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
$ I_2 + I^- \rightleftharpoons I^-_3 $ This reaction is set-up in aqueous medium. Initially we have 1 mole of $I_2$ and 0.5 mole of $I^-$ in 1 L flask. After equilibrium is reached, excess of $AgNO_3$ gave 0.25 mole of yellow ppt. Equilibrium constant is
jeemain
aipmt
chemistry
equilibrium
medium
q22
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
We know that equilibrium constant, K changes with temperature. At 300K, equilibrium constant is 25 and at 400K it is 10. Hence, backward reaction will have energy of activation:
jeemain
aipmt
chemistry
equilibrium
difficult
q21
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
Given a reaction $ A + B \rightleftharpoons C + D $ taking place in a 1L vessel. If we start with 1 mole each of A and B, equilibrium concentration of [C] = [D] = 0.5 M. Percentage of A converted into C if we start with 2 moles of A and 1 mole of B, is
jeemain
aipmt
chemistry
equilibrium
difficult
q20
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
If $\beta_1, \beta_2$ and $\beta_3$ are stepwise formation constants of $MCl, MCl_2, MCl_3$ and K is the overall formation constants of $MCl_3$, then (charges ommitted) :
jeemain
aipmt
chemistry
equilibrium
medium
q19
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
Match the following
jeemain
eamcet
biology
2010
q80
asked
Nov 15, 2013
by
thanvigandhi_1
0
answers
For the following gaseous equilibria X, Y and Z at 300 K. $X: 2SO_2 + O_2 \rightleftharpoons 2SO_3$ $Y: PCl_5 \rightleftharpoons PCl_3 + Cl_2$ $Z: 2HI \rightleftharpoons H_2 + I_2$ ratio of $K_p$ and $K_c$ in the increasing order is:
jeemain
aipmt
chemistry
equilibrium
difficult
q18
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
The application of polymerase Chain Reaction is :
jeemain
eamcet
biology
2010
q79
asked
Nov 15, 2013
by
thanvigandhi_1
0
answers
Haemopoietic stem cells are :
jeemain
eamcet
biology
2010
q78
asked
Nov 15, 2013
by
thanvigandhi_1
0
answers
Find the frequency of heterozygotes in a population which exhibits the Hardy-Weingberg equilibrium, if the frequencies of the two alleles in the population are 0.6 and 0.4 :
jeemain
eamcet
biology
2010
q77
asked
Nov 15, 2013
by
thanvigandhi_1
0
answers
The equilibrium constant $K_c$ for the reaction of $H_2$ with $I_2$ is 57.0 at 700 K $ H_2(g) + I_2(g) \rightleftharpoons 2HI $; $K_c$ = 57 at 700K. select correct statement:
jeemain
aipmt
chemistry
equilibrium
medium
q17
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
Statement (S) : The concept of survival of the fittest is central to natural selection. Reasons (R) : Individuals who possess advantageous characters to adapt to the environment have better potential for survival.
jeemain
eamcet
biology
2010
q76
asked
Nov 15, 2013
by
thanvigandhi_1
0
answers
Match the following in Drosophila with reference to *** determination :
jeemain
eamcet
biology
2010
q75
asked
Nov 15, 2013
by
thanvigandhi_1
0
answers
What is the Equilibrium constant for the formation of one mole of gaseous $HI$ from the $H_2(g)$ and $I_2(g)$?
jeemain
aipmt
chemistry
equilibrium
difficult
q16
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
What are the units of Equilibrium equations $K_p$ and $K_c$ when $\Delta n_g < 0$ respectively ?
sat
chemistry
chemical-equilibrium
jeemain
aipmt
medium
q15
equilibrium
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
what would be the expression in place of ? in the Van't Hoff equation: $ log \frac{K_2}{K_1} = \frac {\Delta H^\circ}{2.303R} [?]$
jeemain
chemistry
difficult
q14
equilibrium
aipmt
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
Which of the following is incorrect about relationship between $K_p$ and $K_c$?
jeemain
equilibrium
chemistry
medium
aipmt
q13
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
Which of the following dashed line represents the position at equilibrium for the concentration-time plot of a reaction??
jeemain
chemistry
equilibrium
aipmt
q12
medium
biology
asked
Nov 15, 2013
by
mosymeow_1
2
answers
Drumstick Barr bodies are found in :
jeemain
eamcet
biology
2010
q74
asked
Nov 14, 2013
by
thanvigandhi_1
0
answers
A mother with blood group 'B' type has a child with blood group type 'O' . What is the possibility of the genotypes of that mother and father ?
jeemain
eamcet
biology
2010
q73
asked
Nov 14, 2013
by
thanvigandhi_1
0
answers
The macrophages present in the liver are called :
jeemain
eamcet
biology
2010
q72
asked
Nov 14, 2013
by
thanvigandhi_1
0
answers
The inability to regulate the concentration of sodium ions in the blood could be due to the improper functioning of one of the following :
jeemain
eamcet
biology
2010
q71
asked
Nov 14, 2013
by
thanvigandhi_1
0
answers
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