Accessory pigments
(A) Play no role in photosynthesis
(B) release electron and get oxidised
(C) transfer of electron to NADP
(D) allow plants to harvest visible light of wider range of wavelength

State the approximate range of wavelength associated with (a) ultraviolet rays. (b) visible light and (c) infrared rays

Splitting of water molecules during light reaction of photosynthesis is associated with (a) PS I resulting the release of O_(2) , protons and transfer of electrons to PS II (b) PS II resulting in release of O_(2) , protons and transfer of electrons to PS I (c) PS II resulting in release of O_(2) , protons and transfer of electrons to PS II (d) PS I resulting in the release of O_(2) , protons and transfer of electrons to PS I. Of the above statements

Coordination compounds plays many important roles in animals and plants. The are essential in the storage and transport of oxygen as electrons transfer agents as catalysts and in photosynthesis Wide range of application in daily life takes place through formation of complexes Photographic fixing qualitative and quantitative analysis purification of water metallurgical extraction are some specific worth mentioning Lead poisoning in the body can be removed by (a) EDTA in the form of calcium dthydrogen salt (b) Cis-platin (c ) Zeisse' s salt (d) DMG .

Coordination compounds plays many important roles in animals and plants. The are essential in the storage and transport of oxygen as electrons transfer agents as catalysts and in photosynthesis Wide range of application in daily life takes place through formation of complexes Photographic fixing qualitative and quantitative analysis purification of water metallurgical extraction are some specific worth mentioning The complex [Fe(H_(2)O)_(5)NO]^(2+) is formed in the brown ring test for nitrates when freshly prepared FeSO_(4) soultion is added to aqueous solution of NO_(3)^(Θ) followed by addition of conc. H_(2)SO_(4) Select correct statement about this complex (a) Colour change is due to charge transfer (b) It has iron in +1 oxidation state and nitrosyl as NO^(o+) (c ) It has magnetic moment of 3.87BM confirming three unpaired electrons in Fe (a) All the above are correct statements .

Coordination compounds plays many important roles in animals and plants. The are essential in the storage and transport of oxygen as electrons transfer agents as catalysts and in photosynthesis Wide range of application in daily life takes place through formation of complexes Photographic fixing qualitative and quantitative analysis purification of water metallurgical extraction are some specific worth mentioning Arrange of the following in order of decreasing number of unpaired electrons (I) [Fe(H_(2)O))_(6)]^(2+) (II) [Fe(CN)_(6)]^(3-) (III) [Fe(CN)_(6)]^(4-) (IV) [fe(H_(2)O)_(6)]^(3+) (a) IV,I,II,III (b) I,II,III,IV (c) III,II,IIV (d) II,III,I,IV .

Coordination compounds plays many important roles in animals and plants. The are essential in the storage and transport of oxygen as electrons transfer agents as catalysts and in photosynthesis Wide range of application in daily life takes place through formation of complexes Photographic fixing qualitative and quantitative analysis purification of water metallurgical extraction are some specific worth mentioning Extraction of Ag from sulphide ore and removal of unreacted silver from photographic plate involve complexes: (a) [Ag(S_(2)O_(3))_(2)]^(3-) ion both (b) [Ag(CN)_(2)]^(Θ) in both (c) [Ag(S_(2)O_(3))]^(3-) , [Ag(CN)_(2)]^(Θ) (d) [Ag(CN)_(2)]^(Θ) ,[Ag_(2)(S_(2)O_(3))_(2)]^(3-) .

Most of the metal carbonyls obey inert gas rule which states the the compounds in which the central metal atom appears to have attained the configuration of a noble gas either by the sharing or by the transfer of electrons tend to be more stable Which of the following has highest C-O bond length ? (a) [mn(CO)_(6)]^(o+) (b) [Co(CO)_(4)]^(Θ) (c) [Fe(CO)_(4))]^(2-) (d) [Ni(CO)_(4)] .

Roles of some mineral elements in plants are given below. (a) Helps in anion cation balance in cells. (b) Involves in protein synthesis. (c) Helps in the formation of mitotic spindle (d) Involves in liberation of oxygen from water during photosynthesis. Which of the given role(s) is/are related to chlorine?

A currrent I is passed through a silver strip of width d and area of cross section A. The number of free electrons per unit volume is n. (a) Find the drift velocity v of the electrons. (b) If a magnetic field B exists in the region as shown in what is the average magnetic force on the free electrons? (c) Due to the magnetic force, the free electrons get accumulated on one side of the conductor along its length. This produces a transverse electric field in the conductor which opposes the magnetic force on the electrons. Find the magnitude of the electric field which will be the potential diference developed across the width of the conductor due to the electron- accumulation? The appearance of a transverse emf, when a current-carrying wire is placed in a magnetic field, is called hall effect.

Assertion: Light-harvesting complexes (LHC) on thylkoid membrane broaden the range of light absorption: Reason: They transfer electrons to reaction center.