Compounds with antiseptic properties are
(a) CHCl, (b) CHI3
(c) Boric acid (d) 0.3 ppm aqueous solution of Cl2
(b, c)
(a) CHCl3 (chloroform) was used as an anaesthesia in surgery but now it is used in the production of the Freon refrigerant R-22.
(b) Iodoform (CFH3) produces iodine on coming in contact with skin, so it is used as an antiseptic for wounds.
(c) Boric acid (IT3BO3) in dilute aqueous solution is a weak antiseptic for eyes. Thus, chemical messenger gives message to the all without entering the cell.
(d) Chlorine in the concentration of 0.2 of 0.4 ppm in aqueous solution and sulphur dioxide in very low concentrations, are disinfectants.
Which of the following are anionic detergents?
(a) Sodium salts of sulphonated long chain alcohol.
(b) Ester of stearic acid and polyethylene glycol.
(c) Quaternary ammonium salt of amine with acetate ion.
(d) Sodium salts of sulphonated long chain hydrocarbons.
Assertion (A): Transparent soaps are made by dissolving soaps in ethanol. Reason (R): Ethanol makes things invisible.
Why are cimetidine and ranitidine better antacids than sodium hydrogencarbonate or magnesium or aluminium hydroxide?
Which of the following compounds are administered as ant-acids?
(a) Sodium carbonate (b)Sodium Hydrogen carbonate
(c)Aluminium carbonate (d)Magnism Hydroxide
In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices:
(a) Assertion and reason both are correct statements but reason does not explain assertion.
(b) Assertion and reason-both are correct statements and reason explains the assertion.
(c) Both assertion and reason are wrong statement.
(d) Assertion is correct statement and reason is wrong statements.
(e) Assertion is wrong statements and reason is correct statement.
Assertion (A): Penicillin (G) is an antihistamine.
Reason (R): Penicillin (G) is effective against gram positive as well as gram negative bacteria. .
Assertion (A): Preservative are added to food items.
Reason (R): Preservatives inhibit the growth of microorganisms.
While antacids and antiallergic drugs interfere with the function of histamines, why do these not interfere with the function of each other?
Which of the following are not used as food preservatives?
(a) Table salt (b) Sodium hydrogen carbonate
(c) Cane sugar (d) Benzoic acid
Which of the following statements are correct about barbiturates?
(a) Hypnotics or sleep producing agents.
(b) These are tranquilizers.
(c) Non-narcotic analgesics.
(d) Pain reducing without disturbing the nervous system.
Synthetic detergents have advantage over usual soaps as far as cleansing power is concerned. But use of synthetic detergents over a long time creates environmental pollution. How can the pollution caused by synthetic detergents be minimized? Classify the detergents according to their chemical nature.
Name two ct-amino acids which form a dipeptide which is 100 times more sweet than cane sugar?
Assertion (A): Receptors are crucial to body's communication process. Reason (R): Receptors are proteins.
Assertion (A): Chemical messengers are chemicals that enable communi ¬cation of message between two neutrons or between neurons and muscles. Reason (R): Chemicals enter the cell through receptor.
Assertion (A): Non-competitive inhibitor inhibits the catalytic activity of enzyme by binding with its active site.
Reason (R): Non-competitive inhibitors changes the shape of the active site in such a way that substrate cannot recognize it.
Assertion (A): Receptor proteins show selectivity for one chemical messenger over the other.
Reason (R): Chemical messenger binds to the receptor site and inhibits its natural function.
How do enzymes catalyse a chemical reaction in the living system? Explain drug target interaction taking the example of enzyme as target.
Sleeping pills are recommended by doctors to the patients suffering from sleeplessness but it is not advisable to take its doses without consultation with the doctor. Why?
Which of the following statements are correct?
(a) Cationic detergents have germicidal properties.
(b) Bacteria can degrade the detergents containing highly branched chains.
(c) Some synthetic detergents can give foam even in ice cold water.
(d) Synthetic detergents are not soaps.
If soap has high alkali content it’irritates skin. How can the amount of excess alkali be determined? What can be the source of excess alkali?
How does the branching of hydrocarbon chain of synthetic detergents affect their biodegradability?
