Study the following statements regarding chl a molecule.
(i) Molecular formula of chl a is `C_(55)H_(72)O_(5)N_(4)Mg`.
(ii) It si the primary photosynthetic pigment.
(iii) In pure state, it is red in colour and thus it absorbs more blue wavelength of light than the red wavelength.
(iv) It is soluble in water as well as pertroleum ether. Which of the above statements is/are not correct

Study the following statements. (i) Red light falling in the ragne of wavelength 660-760nm is the most effective for photosynthesis. (ii) Green light falling in the range of wavelength 500-580 nm is the least effective for photosynthesis. (iii) Chl a,chl b carotenses and xanthophylls are soluble in organic solvents. (iv) Phycobilins (phycocyanin, allophycocynin and phycoerythrin) are soluble in water Which of the above statements is/are incorrect?

Study the following statements. (i) Red light falling in the ragne of wavelength 660-760nm is the most effective for photosynthesis. (ii) Green light falling in the range of wavelength 500-580 nm is the least effective for photosynthesis. (iii) Chl a,chl b carotenses and xanthophylls are soluble in organic solvents. (iv) Phycobilins (phycocyanin, allophycocynin and phycoerythrin) are soluble in water Which of the above statements is/are incorrect?

Which of the following statements regarding ethanoic acid and methyl methanoate are correct? (I) They are functional group isomers with molecular formula C_(2)H_(4)O_(2) . (II) They belong to different homologous series (III) They have different chemical properties.

An electron in a hydrogen atom is excited from the ground state to the n = 4 state. Predict which of the following statements are true or false : (i) n = 4 is the first excited state. (ii) It takes more energy to ionize (remove) the electron from n = 14 than in the ground state. (iii) The wavelength of light emitted when the electron drops from n = 4 to n = 2 is longer than that from n = 4 to n = 1 . (iv) The wavelength which the atom absorbs in going from n = 1 to n = 4 is the same as emitted when it goes from n = 4 to n = 1 . (v) The electron is farther from the nucleus (on average) in n = 4 than in the ground state.

Which of the following statements concerning 3,4 -dibromo- 1 -pentane and 3,5 -dibromo- 2 -pentane are correct? (I) They have same molecular formula C_(5)H_(8)Br_(2) (II) They are positional isomers. (III) They have similar chemical properties.

Study the following statements regarding acid rain and select the incorrect ones. (i) Acid rain refers to the rainfall and other forms of precipitation with a pH of less than 5. (ii) Oxides of sulphur and nitrogen are released from automobile exhausts, industries , power plants, etc. (iii) These oxides of sulphur and nitrogen, may react with water in the air and form sulphuric acid (H_(2)SO_(4)) and nitric acid (HNO_(3)) . (iv) Acid rain has harmful effects on animals and human beings but no characteristic impact on plants.

Study the following statements regarding acid rain and select the incorrect ones. (i) Acid rain refers to the rainfall and other forms of precipitation with a pH of less than 5. (ii) Oxides of sulphur and nitrogen are released from automobile exhausts, industries , power plants, etc. (iii) These oxides of sulphur and nitrogen, may react with water in the air and form sulphuric acid (H_(2)SO_(4)) and nitric acid (HNO_(3)) . (iv) Acid rain has harmful effects on animals and human beings but no characteristic impact on plants.