Write the defination of specific rotation.

Write the defination of specific rotation.
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Write the defination of specific rotation.
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Description : Defination of Antacids

Last Answer : Antacids:- These substances react with hydrochloric acid present in the stomach neutralize it partially. Example magnesium hydroxide , Aluminum hydroxide etc . it can be used as tablet or in aqueous suspension .

Defination of Analgesics

Description : Defination of Analgesics

Last Answer : Analgesics:- chemical substance used for relieving pain are called analgesics . Example novalgin, profanes etc. 

Defination of Disinfectants

Description : Defination of Disinfectants

Last Answer : Disinfectants :- Chemical substances which kill micro –organism or stop their growth but are harmful to human tissue are called disinfectants .example 1.% solution of phenol (2)SO2 in very low concentration.

Defination of Antipyritics

Description : Defination of Antipyritics

Last Answer : Antipyritics :- Chemical substances which are used to bring down the body temperature in high fevers are called antipyretic. Example Aspirin, paracetamole or Analgin etc. 

Defination of Antihistamins

Description : Defination of Antihistamins

Last Answer : Antihistamins :- Antihistamins are amines which are used as drugs to control the allergy effects produced by histamines. Example diphenyl hydrazine or promethazine .

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Description : Defination of Broad spectrum Antibiotics

Last Answer : Broad spectrum Antibiotics- Antibiotics which are effective against several different types of harmful micro-organisms and thus, capable of curing several infections are called broad spectrum antibiotics Example chloromycetin, Tetracycline .

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Description : Defination of Antibiotics

Last Answer : Antibiotics- Chemical substances which are produced by micro-organisms(such as moulds and bacteria) and are capable of destroying other micro organism are called antibiotics .Example penicillin ,Ampiciline.

Defination of Tranquilizers

Description : Defination of Tranquilizers

Last Answer : Tranquilizers- they are chemicals which are used for treatment of mental diseases .they act on higher centers of central nervous system. Example Equanil , Seconal ,luminal or Barbituric acid etc.

Defination of Emulsion

Description : Defination of Emulsion

Last Answer : Emulsion : A colloids contain dispersed phase and dispersion medium both in liquid state is known as Emulsion.  There are two types of emulsion. (i) Oil in water & (ii) water in oil.

Defination of Coagulative Value

Description : Defination of Coagulative Value

Last Answer : Coagulative Value : The minimum no. of a milli moles of electrolyte requires to coagulate one litre colloidal solutions.

Defination of Coagulation

Description : Defination of Coagulation

Last Answer : Coagulation : The process of converting colloidal solution into precipitate by mixing small amount of oppositely charged electrolyte known as Coagulation. 

Defination of Electrophoresis

Description : Defination of Electrophoresis

Last Answer : Electrophoresis : The process of migration of charged colloidal solute towards the oppositely charged electrode in colloidal solution is known as Electrophoresis.

Defination of Brownian Movement

Description : Defination of Brownian Movement

Last Answer : Brownian Movement : The continuous zig zag motion of dispersed phase in dispersion medium is called Brownian Movement. It is due to the unbalanced bombardment of the particles by the molecules of the dispersion medium.

Defination of Tyndal effect

Description : Defination of Tyndal effect

Last Answer : Tyndal effect : The process of scattering of light in colloidal solution by colloidal solute known as Tyndal effect. The bright cone of light is called Tyndal cone.

Defination of Ultra filtration

Description : Defination of Ultra filtration

Last Answer : Ultra filtration: It is the process of separating the colloidal particles from the solvent and the solute present in colloida solution by ultra filter paper. 

Defination of Dialysis

Description : Defination of Dialysis

Last Answer : Dialysis : It is the process of purification of colloids by diffusion through a semi permeable membrane.

Defination of Peptization

Description : Defination of Peptization

Last Answer : Peptization : The process of converting precipitate into colloidal sol by mixing small amount of electrolyte into dispersion medium known as peptization and the electrolyte known as peptizing agent.

Defination of Catalyst

Description : Defination of Catalyst

Last Answer : Catalyst:- A substance which increase or decrease the rate of chemical reaction and quantitatively unchanged after the reaction known as catalyst. There are two types of catalyst:- (i) Positive Catalyst and (ii) Negative Catalyst.

Defination of Enthalpy of Adsorption

Description : Defination of Enthalpy of Adsorption

Last Answer : Enthalpy of Adsorption:- The amount of energy released by the attraction of one mole of adsorbate on the adsorbent.

Defination of Sorption

Description : Defination of Sorption

Last Answer : Sorption:- The process in which both adsorption and absorption takes place simultaneously known as sorption.

Defination of Absorption

Description : Defination of Absorption

Last Answer : Absorption:- The uniform distribution of molecular throughout the bulk of the solid known as absorption.

Defination of Desorption

Description : Defination of  Desorption

Last Answer : Desorption:- The process of removal of adsorbed substance from a surface of solid or liquid known as desorption.

Defination of Adsorbent

Description : Defination of Adsorbent

Last Answer : Adsorbent:- The solid or liquid substance on which adsorption takes place known as adsorbent .

Defination Adsorbate .

Description : Defination Adsorbate .

Last Answer : Adsorbate:- The molecular species which concentrates or accumulates on the surface known as Adsorbate. 

Defination Adsorption.

Description : Defination Adsorption.

Last Answer : Adsorption:- It is the process of attracting molecular species on the surface of solid or liquid .

Pure (R) Mandelic acid has specific rotation of 150. If a sample contains 60% of the R and 40% of its enantiomer, the `[alpha]` of his solution is.

Description : Pure (R) Mandelic acid has specific rotation of 150. If a sample contains 60% of the R and 40% of its enantiomer, the `[alpha]` of his solution is.

Last Answer : Pure (R) Mandelic acid has specific rotation of 150. If a sample contains 60% of the R and 40% of its enantiomer, the `[alpha]` of his solution is.

Pure cholesterol has a specific rotation of -32. A sample of cholesterol prepared in the lab has a specific rotation of -8. The enatiomeric excess of

Description : Pure cholesterol has a specific rotation of -32. A sample of cholesterol prepared in the lab has a specific rotation of -8. The enatiomeric excess of

Last Answer : Pure cholesterol has a specific rotation of -32. A sample of cholesterol prepared in the lab has a ... the sample of chloresterol is x%. X is :

(+) tartaric acid has a specific rotation of +12 unit when measured in 12cm polarimeter tube and 2g/ml concentration at given temperature and light. W

Description : (+) tartaric acid has a specific rotation of +12 unit when measured in 12cm polarimeter tube and 2g/ml concentration at given temperature and light. W

Last Answer : (+) tartaric acid has a specific rotation of +12 unit when measured in 12cm polarimeter tube and 2g/ml concentration ... -6 " unit"` D. `+24 " unit"`

The instrument which can be used to measure optical activity, i.e., specific rotation:

Description : The instrument which can be used to measure optical activity, i.e., specific rotation:

Last Answer : The instrument which can be used to measure optical activity, i.e., specific rotation: A. Refractometer B. Photometer C. Voltmeter D. Polarimeter

The mutarotation of glucose is characterized by : (a) a change from an aldehyde to ketone structure. (b) a change of specific rotation from a (+) to a (–) value. (c) the presence of an intramolecular bridge structure. (d) the irreversible change from α-D to the β-D form.

Description : The mutarotation of glucose is characterized by : (a) a change from an aldehyde to ketone structure. (b) a change of specific rotation from a (+) to a (–) value. (c) the presence of an intramolecular bridge structure. (d) the irreversible change from α-D to the β-D form.

Last Answer : the presence of an intramolecular bridge structure.

Which of the following is not true of enantiomers? (a) They have the same melting point. (b) They have the same boiling point. (c) They have the same density. (d) They have the same specific rotation.

Description : Which of the following is not true of enantiomers? (a) They have the same melting point. (b) They have the same boiling point. (c) They have the same density. (d) They have the same specific rotation.

Last Answer : They have the same specific rotation.