Description : In the leaves of `C_(4)` plants, malic acid formation during `CO_(2)` fixation occurs in the cells of
Last Answer : In the leaves of `C_(4)` plants, malic acid formation during `CO_(2)` fixation occurs in the ... A. Epidermis B. Mesophyll C. Bundle sheath D. Phloem
Description : Photosynthesis in `C_(4)` plants is relatively less limited by atmospheric `CO_(2)` levels because
Last Answer : Photosynthesis in `C_(4)` plants is relatively less limited by atmospheric `CO_(2)` levels because A. ... 4)` plants has higher affinity for `CO_(2)`
Description : The initial `CO_(2)` acceptor in `C_(4)` plants is
Last Answer : The initial `CO_(2)` acceptor in `C_(4)` plants is A. Phosphoglyceraldehyde B. Ribulose monophosphate C. Phosphonel pyruvate D. Ribulose diphosphate
Description : In `C_(4)` plants , initial `CO_(2)` fixation takes place in the chloroplasts of
Last Answer : In `C_(4)` plants , initial `CO_(2)` fixation takes place in the chloroplasts of A. Gurad cells B. Mesophyll cells C. Spongy tissue D. Bundle sheath
Last Answer : The initial `CO_(2)` acceptor in `C_(4)` plants is A. PEP B. PGA C. RuBP D. Pyruvate
Description : In human beings, `CO_(2)` concentration in the imspired and expired air is respectively
Last Answer : In human beings, `CO_(2)` concentration in the imspired and expired air is respectively A. 0.03% and 5.3% B. 0 ... C. 0.04% and 3.0% D. 0.03% and 4.0%
Description : The first acceptor of `CO_(2)` in `C_(4)` plant is
Last Answer : The first acceptor of `CO_(2)` in `C_(4)` plant is A. RuBp B. PEP C. OAA D. water
Description : To reduce `1 CO_(2)` molecules in `C_(3)` cycle , assimilatory power needed is
Last Answer : To reduce `1 CO_(2)` molecules in `C_(3)` cycle , assimilatory power needed is A. `3ATP, 2NPDPH_(2)` B. ... ATP, 2NADPH_(2)` D. `6.5 ATP, 2NADPH_(2)`
Description : For the redox reation `MnO_(4)^(-)+C_(2)O_(4)^(2-)+H^(+)rarrMn^(2+)CO_(2)+H_(2)O` The correct stoichiometric coefficients of `Mno_(4)^(-),C_(2)O_(4)^(
Last Answer : For the redox reation `MnO_(4)^(-)+C_(2)O_(4)^(2-)+H^(+)rarrMn^(2+)CO_(2)+H_(2)O` The correct stoichiometric ... . 16, 5, 2 C. 2, 16, 5 D. 5, 2, 16
Description : In the balanced equation `MnO_(4)^(-)+H^(+)+C_(2)O_(4)^(2-)rarr Mn^(2+)+CO_(2)+H_(2)O`, the moles of `CO_(2)` formed are :-
Last Answer : In the balanced equation `MnO_(4)^(-)+H^(+)+C_(2)O_(4)^(2-)rarr Mn^(2+)+CO_(2)+H_(2)O`, the moles of `CO_(2)` formed are :- A. 2 B. 4 C. 5 D. 10
Description : A 3 L gas mixture of propane `(C_(3)H_(8))` and butane `(C_(4)H_(10))` on complete combustion at 25 C produced 10 L `CO_(2.)` Assuming constant P and
Last Answer : A 3 L gas mixture of propane `(C_(3)H_(8))` and butane `(C_(4)H_(10))` on complete combustion at 25 C ... .5L` D. `C_(3)H_(8),0LandC_(4)H_(10),3L`
Description : In the following reaction final product is : `C_(6)H_(5)MgBr +CO_(2) overset("Ether")to overset(H^(o+))to` find product
Last Answer : In the following reaction final product is : `C_(6)H_(5)MgBr +CO_(2) overset("Ether")to ... A. Benzoic acid B. Benzaldehyde C. Benzamide D. Benzene
Description : The reaction, `C_(6)H_(5)ONa +CO_(2)+H_(2)O rarr C_(6)H_(5)OH+NaHCO_(3)` suggests that `:`
Last Answer : The reaction, `C_(6)H_(5)ONa +CO_(2)+H_(2)O rarr C_(6)H_(5)OH+NaHCO_(3)` suggests that ... C. Water is stronger acid than phenol D. None of the above
Description : A mixture of ether and ….. Gives temperature as low as 163 K (1) NaC1 (2) Ice (3) Solid `CO_(2)` `C_(2)H_(5)OH`
Last Answer : A mixture of ether and .. Gives temperature as low as 163 K (1) NaC1 (2) Ice (3) Solid `CO_(2)` ... true but R is false D. A is false but R is true
Description : With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct? (a) Increasing atmospheric CO2 concentration up to 0.05% can enhance CO2 fixation rate. ( ... for higher yield. (d) Light saturation for CO2 fixation occurs at 10% of full sunlight.
Last Answer : (b) C3 plants respond to higher temperature with enhanced photosynthesis while C4 plants have much lower temperature optimum
Description : With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct ? (1) Increasing atmospheric CO 2 concentration up to 0.05% can enhance CO 2 fixation ... for higher yield (4) Light saturation for CO 2 fixation occurs at 10% of full sunlight
Last Answer : (2) C 3 plants respond to higher temperatures with enhanced photosynthesis while C 4 plants have much lower temperature optimum
Description : `CO_(2)` acceptor and carboxylating exzyme in C3 plants are , respectively,
Last Answer : `CO_(2)` acceptor and carboxylating exzyme in C3 plants are , respectively, A. PEP, PEPCO B. RuBP, RuBisCO C. OAA, RuBisCO D. 3 PGA, RuBisCO
Description : In `C_(4)` plants , mesophyll cells and bundle sheath cells are specialized to perform, respectively,
Last Answer : In `C_(4)` plants , mesophyll cells and bundle sheath cells are specialized to ... and photorespiration D. Photorespiration and dark reaction
Description : Without saturation of transport proteins and under same concentration gradient how can the speed of simple diffusion be compared to the speed of facilitated diffusion ?
Last Answer : The action of facilitator proteins in facilitated diffusion makes this type of diffusion faster than simple diffusion under equal concentration gradients of the moved substance.
Description : The driving potential for the crystal growth during crystallisation is the __________ of the solution. (A) Concentration (B) Viscosity (C) Super-saturation (D) Density
Last Answer : (C) Super-saturation
Description : It is estimated that out of the total global warming the relative contribution of `CO_(2)`, `CH_(4)` CFCs and `N_(2)O` are found respectively as:
Last Answer : It is estimated that out of the total global warming the relative contribution of `CO_(2)`, `CH_(4)` CFCs ... 60% C. 60%,20%,14%,6% D. 6%,14%,20%,60%
Description : `Delta_(f)^(@)` for `CO_(2(g)), CO_((g))` and `H_(2)O_((g))` are `-393.5,-110.5` and `-241.8kJ mol^(-1)` respectively. The standard enthalpy change `(
Last Answer : `Delta_(f)^(@)` for `CO_(2(g)), CO_((g))` and `H_(2)O_((g))` are `-393.5,-110.5` and `-241.8kJ mol^(-1 ... A. `524.1` B. `41.2` C. `-262.5` D. `-41.2`
Description : The enthalpy of formation of `CO(g), CO_(2)(g),N_(2)O(g)` and `N_(2)O_(4)(g)` is `-110,-393,+81` and 10 kJ / mol respectively. For the reaction `N_(2)
Last Answer : The enthalpy of formation of `CO(g), CO_(2)(g),N_(2)O(g)` and `N_(2)O_(4)(g)` is `-110,-393,+81` and 10 ... is A. `-212` B. `+212` C. `+778` D. `-778`
Description : The EAN of metal atoms in `[Fe(CO)_(2)(NO^(+))^(2)] and Co_(2)(CO)_(8)` respectively are :
Last Answer : The EAN of metal atoms in `[Fe(CO)_(2)(NO^(+))^(2)] and Co_(2)(CO)_(8)` respectively are : A. 34,35 B. 34,36 C. 36,36 D. 36,35
Description : Assertion `:-` In the tissue high `P_(O_(2))`, low `P_(CO_(2))`, higher `H^(o+)` concentration conditions are favourable for dissociation of oxygen fr
Last Answer : Assertion `:-` In the tissue high `P_(O_(2))`, low `P_(CO_(2))`, higher `H^(o+)` ... Reason is False. D. If both Assertion & Reason are false.
Description : In which the following factors can interfere in binding of `O_(2)` with haemoglobin. `A-P_(CO_(2))` `B-H^(+)` ion concentration C-Temperture
Last Answer : In which the following factors can interfere in binding of `O_(2)` with haemoglobin. `A-P_(CO_(2))` `B-H^(+)` ion ... A B. B,C C. A and C D. A,B,C
Description : When `CO_(2)` concentration in blood increases breathing becomes
Last Answer : When `CO_(2)` concentration in blood increases breathing becomes A. There is no effect on breathing B. Slow and deep C. Faster D. Shallower and slow
Description : At present, the concentration of `CO_(2)` in the atmosphere is about:
Last Answer : At present, the concentration of `CO_(2)` in the atmosphere is about: A. 100ppm B. 240ppm C. 380 ppm D. 520 ppm
Description : Chemoreceptors for `CO_(2)` and `H^(+)` ion concentration are present in :-
Last Answer : Chemoreceptors for `CO_(2)` and `H^(+)` ion concentration are present in :- A. Arteries and ... and veins and medulla D. Vein and pons and medulla
Description : The heat of combustion of `CH_(4(g)), C_((g))` and `H_(2(g))` at `25^(@)C` are `-212.4` K cal, -94.0 K cal and -68.4 K cal respectively, the heat of f
Last Answer : The heat of combustion of `CH_(4(g)), C_((g))` and `H_(2(g))` at `25^(@)C` are `-212.4` K cal, -94.0 ... .4` K cal C. `-375.2` K cal D. `+212.8` K cal
Description : Compounds P and R upon ozonolysis produce Q and S, respectively. The molecular formula of Q and S is `C_(8)H_(8)O`. Q undergoes cannizzaro reactions b
Last Answer : Compounds P and R upon ozonolysis produce Q and S, respectively. The molecular formula of Q and S is `C_(8) ... R , respectively is (are) A. B. C. D.
Description : The configurations of the carbon atoms `C_(2)` and `C_(3)` in the following compound respectively
Last Answer : The configurations of the carbon atoms `C_(2)` and `C_(3)` in the following compound respectively A. R, R B. S, S C. R, S D. S, R
Description : The oxidation state of Cr in `[Cr(H_(2)O)_(6)]Cl_(3), [Cr(C_(6)H_(6))_(2)], and K_(2)[Cr(CN)_(2)(O)_(2)(O_(2))(NH_(3))]` respectively are :
Last Answer : The oxidation state of Cr in `[Cr(H_(2)O)_(6)]Cl_(3), [Cr(C_(6)H_(6))_(2)], and K_(2)[Cr(CN)_(2)(O)_(2 ... and +4` C. `+3,+4 and +6` D. `+3,+2 and +4`
Description : `C_(2)H_(5)OH overset(KMnO_(4)//H^(oplus))rarrX underset(H_(2)SO_(4))overset(Y)rarr CH_(3)COOC_(2)H_(5)`, X and Y respectively are
Last Answer : `C_(2)H_(5)OH overset(KMnO_(4)//H^(oplus))rarrX underset(H_(2)SO_(4))overset(Y)rarr CH_(3)COOC_(2)H_(5)` ... CH_(3)COOH` D. `CH_(3)COOH, C_(2)H_(5)OH`
Description : The resistivity of indium arsenide arsenide is `rho=2.5 xx10^(-3) Omega m` and its Hall constant is `C_(H)=10^(-2) m^(3)//c`. Find the concentration a
Last Answer : The resistivity of indium arsenide arsenide is `rho=2.5 xx10^(-3) Omega m` and its Hall ... and mobility of the charge carriers in this material.
Description : Fig. 6(b).54. shows a thin lens with centres of curvature `C_(1) and C_(2)`. If `mu = 1.5`, what is its focal length ?
Last Answer : Fig. 6(b).54. shows a thin lens with centres of curvature `C_(1) and C_(2)`. If `mu = 1.5`, what is its focal length ?
Description : Write the characteristics of bundle sheath cells of `C_(4)` plants
Last Answer : Write the characteristics of bundle sheath cells of `C_(4)` plants
Description : Describe solubility saturation solubility. Write the effect of temperature on solubility.
Last Answer : Solubility: Solubility of a solute is the maximum amount of solute that can be dissolved in a given amount of solvent at a specific temperature and pressure. OR It is the amount ... litre of solution. Effect of temperature on solubility: Solubility increases as temperature increases.
Description : The reduction process of `CO_(2)` and ATP formatioin in plants has relationship. In this reaction , ATP is
Last Answer : The reduction process of `CO_(2)` and ATP formatioin in plants has relationship. In this reaction , ATP ... . Utilized C. Not utlized D. None of these
Description : The process of taking in `CO_(2)` by plants and releasing `O_(2)` is component of
Last Answer : The process of taking in `CO_(2)` by plants and releasing `O_(2)` is component of A. Photosynthesis B. Endosomosis C. Transpiration D. Respiration
Description : Who discovered that `CO_(2)` is taken in and `O_(2)` is released by green plants ?
Last Answer : Who discovered that `CO_(2)` is taken in and `O_(2)` is released by green plants ? A. Meyer B. Ijugen Housz C. Senebier D. Priestly
Description : In the mesophyll cells of CAM plants, `CO_(2)` fixation during the night day occurs through
Last Answer : In the mesophyll cells of CAM plants, `CO_(2)` fixation during the night day occurs ... carboxylase D. Both RuBP carboxylase and PEP carboxylase
Description : In the atmosphere, carbon dioxide is found in two forms, i.e., `.^(12)CO_(2)` and `.^(14)CO_(2)`. Plants absorb `CO_(2)` during photosynthesis. In pre
Last Answer : In the atmosphere, carbon dioxide is found in two forms, i.e., `.^(12)CO_(2)` and `.^(14)CO_(2)` ... 4246.5 years B. 5384 yrs C. 4628 yrs D. 2684 yrs
Last Answer : In the atmosphere, carbon dioxide is found in two forms, i.e., `.^(12)CO_(2)` and `.^(14)CO_(2)`. ... A. 4246 yrs B. 4624 yrs C. 4628 yrs D. 6248 yrs
Last Answer : In the atmosphere, carbon dioxide is found in two forms, i.e., `.^(12)CO_(2)` and `.^(14)CO_(2) ... H_(2)O` and `CO_(2)` D. mechanism is not confirmed
Last Answer : In the atmosphere, carbon dioxide is found in two forms, i.e., `.^(12)CO_(2)` and ` ... nitrogen by cosmic ray neutrons D. none of the above
Description : The process which makes major difference between `C_(3)` and `C_(4)` plants is
Last Answer : The process which makes major difference between `C_(3)` and `C_(4)` plants is A. Photorespiration B. Respiration C. Glycopsis D. Calvin cycle
Description : A process that makes important difference between `C_(3)` and `C_(4)` plants is
Last Answer : A process that makes important difference between `C_(3)` and `C_(4)` plants is A. Glycolysis B. Photosynthesis C. Photorespiration D. Transpiration