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A person having osteoporosis is sufferin...

A person having osteoporosis is suffering from lead poisoning. Ethlene diamine tetra acetic acid (EDTA) is administered for this condition. The best form of EDTA to be used for such administration is -

A

EDTA

B

tetrasodium salt

C

disodium salt

D

calcium dihydrogen salt

Text Solution

Verified by Experts

The correct Answer is:
D
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Ethylenediamine tetraacetic acid, EDTA in the form of its calcium dihydrogen salt, is administered as an antidote for lead poisoning. Explain why this reagent might be an effective medicine. Why is the calcium salt administrated rather than the free acid

The ciliary muscles of eye control the curvature of the lens in the eye and hence can alter the effective focal length of the system. When the muscles are fully relaxed, the focal length is maximum. When the muscles are strained, the curvature of lens increases. That means radius of curvature decreases and focal length decreases. For a clear vision, the image must be on the retina. The image distance is therefore fixed for clear vision and it equals the distance of retina from eye lens. It is about 2.5cm for a grown up person. A perosn can theoretically have clear vision of an object situated at any large distance from the eye. The smallest distance at which a person can clearly see is related to minimum possible focal length. The ciliary muscles are most strained in this position. For an average grown up person, minimum distance of the object should be around 25cm. A person suffering from eye defects uses spectacles (eye glass). The function of lens of spectacles is to form the image of the objects within the range in which the person can see clearly. The image o the spectacle lens becomes object for the eye lens and whose image is formed on the retina. The number of spectacle lens used for th eremedy of eye defect is decided by the power fo the lens required and the number of spectacle lens is equal to the numerical value of the power of lens with sign. For example, if power of the lens required is +3D (converging lens of focal length 100//3cm ), then number of lens will be +3 . For all the calculations required, you can use the lens formula and lensmaker's formula. Assume that the eye lens is equiconvex lens. Neglect the distance between the eye lens and the spectacle lens. Q. A person can see objects clearly from distance 10cm to oo . Then, we can say that the person is

The ciliary muscles of eye control the curvature of the lens in the eye and hence can alter the effective focal length of the system. When the muscles are fully relaxed, the focal length is maximum. When the muscles are strained, the curvature of lens increases. That means radius of curvature decreases and focal length decreases. For a clear vision, the image must be on the retina. The image distance is therefore fixed for clear vision and it equals the distance of retina from eye lens. It is about 2.5cm for a grown up person. A perosn can theoretically have clear vision of an object situated at any large distance from the eye. The smallest distance at which a person can clearly see is related to minimum possible focal length. The ciliary muscles are most strained in this position. For an average grown up person, minimum distance of the object should be around 25cm. A person suffering from eye defects uses spectacles (eye glass). The function of lens of spectacles is to form the image of the objects within the range in which the person can see clearly. The image o the spectacle lens becomes object for the eye lens and whose image is formed on the retina. The number of spectacle lens used for th eremedy of eye defect is decided by the power fo the lens required and the number of spectacle lens is equal to the numerical value of the power of lens with sign. For example, if power of the lens required is +3D (converging lens of focal length 100//3cm ), then number of lens will be +3 . For all the calculations required, you can use the lens formula and lensmaker's formula. Assume that the eye lens is equiconvex lens. Neglect the distance between the eye lens and the spectacle lens. Q. A far sighted man connot see objects clearly unless they are at least 100cm from his eyes. The number of the spectacle lenses that will make his range of clear vision equal to an average grown up person will be

The ciliary muscles of eye control the curvature of the lens in the eye and hence can alter the effective focal length of the system. When the muscles are fully relaxed, the focal length is maximum. When the muscles are strained, the curvature of lens increases. That means radius of curvature decreases and focal length decreases. For a clear vision, the image must be on the retina. The image distance is therefore fixed for clear vision and it equals the distance of retina from eye lens. It is about 2.5cm for a grown up person. A perosn can theoretically have clear vision of an object situated at any large distance from the eye. The smallest distance at which a person can clearly see is related to minimum possible focal length. The ciliary muscles are most strained in this position. For an average grown up person, minimum distance of the object should be around 25cm. A person suffering from eye defects uses spectacles (eye glass). The function of lens of spectacles is to form the image of the objects within the range in which the person can see clearly. The image o the spectacle lens becomes object for the eye lens and whose image is formed on the retina. The number of spectacle lens used for th eremedy of eye defect is decided by the power fo the lens required and the number of spectacle lens is equal to the numerical value of the power of lens with sign. For example, if power of the lens required is +3D (converging lens of focal length 100//3cm ), then number of lens will be +3 . For all the calculations required, you can use the lens formula and lensmaker's formula. Assume that the eye lens is equiconvex lens. Neglect the distance between the eye lens and the spectacle lens. Q. Maximum focal length of a eye lens of a normal person is

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Molecules of the amino acids that comprise our proteins have the property of being non-super imposable on their mirror images because,. They are said to be chiral or possess 'handedness'. Most of the amino acids are of left handed form, but with no reasons available. Even more interesting recent experiments have shown that a 7-9% excess of four amino acids is present in Murchison meteorite discovered in 1970. This analysis shows life could arise outside the confines of earth. The origin of unequal distribution is probably because of electromagnetic radiations emitted in a corkscrew fashion from the poles of spinning neutron stars could lead to a bias of one mirror image isomer over another when molecules form in interstellar space. A stereogenic carbon can be defined as a carbon atom bearing groups of such nature that an interchange of any two groups will produce a stereoisomer. The device that is used for measuring the effect of optically active compounds on plane polarized light is a polarimeter. The analyser in the polarimeter decides the activity of compound present. This is being decided on the basis of angle by which axis of analyser has to be rotated for complete brightness. Left, right or no adjustment decides l, d - activity or optical inactivity respectively. Optically inactive isomer possessing chiral centres are categorized as

RESONANCE ENGLISH-COORDINATION COMPOUNDS-Additional Problem for Self Practice (APSP) Part-II
  1. Lattice energy of an ionic compound depends on

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  2. IUPAC name of |Co(ONO)(NH(3))(5)Cl(2)| is

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  3. Among the following complexes, the one which shows zero crystal field ...

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  4. When any solution passess through a cation exchange resin that is in a...

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  5. A person having osteoporosis is suffering from lead poisoning. Ethlene...

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  6. The complex that can show optical activity is :

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  7. For [FeF(6)]^(3-) and [CoF(6)]^(3-), the correct statement is

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  8. Which of the following will produce red color when treated with (NH(4...

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  9. Which of the following reactions is not correct ?

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  10. In which of the following complexes the metal ion has the lowest ionic...

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  11. Which of the following ion has magnetic moment is 3.87 BM :-

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  12. IUPAC name of complex ion [CrCl2("ox")2]^(3-) is

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  13. [Co(NH(3))(4)(NO(2))(2)]Cl exhibits

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  14. Metal 'M' forms a carbonyl compound in which it is present in its lowe...

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  15. The most suitable reagent for the conversion of Propanol to Propanal ...

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  16. The complex which has no d-electron in the central metal atom is .

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  17. The complex ion . [M(en)Br(2)I(2)]^(-1), has two optical isomers. Thei...

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  18. The IUPAC name of the complex [P t (Br) (Cl) (NH(3)) (3) (NO(2))]Cl i...

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  19. The C-O bond length is the shortest in:

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  20. The spin-only magnetic moment of [Fe(NH(3))(6)]^(3+) and [FeF(6)]^(3-)...

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