Which of the following is not a polymer?
Cholesterol
Oxytocin
Amylose
RNA
A.
Cholesterol
Among the given options, chloesterol is not a polymer. It is a steroid.
Oxytocin is a polyamide.
Amylose is a polysaccharide.
RNA is a polymer of nucleotides.
Which ligand is useful for removal of the toxic effect of lead metal in body in chelate therapy treatment?
AsO
CH3COO-
(COO-)2
The reaction,
R-CO-R RCONHR + N2 is called
Claisen-Schmidt reaction
Kolbe-Schmidt reaction
Schmidt reaction
Kolbe's reaction
When glucose reacts with acetone in acidic medium, the main product is
laevulic acid
glycosazone
dioxopropylidene glucose
None of the above
Which of the following is not true for antibiotics?
Tetracycline is one of the broad spectrum antibiotics which are effective against a large number of harmful microorganisms
Streptomycin is highly effective against microorganisms which cause tuberculois
Penicillin has a narrow spectrum and certain persons are sensitive to it
Penicillin may be administered without testing the patients for sensitivity to it
How much ethyl alcohol C2H5OH, must be added to 1.00 L of water so that the solution will not freeze at - 4°F?
211 gm
495 gm
85 gm
46 gm
The reagent(s) used in the preparation of aspirin from salicylic acid
SOCl2, pyridine
(CH3CO)2O, H+
CH3CO2H, HCl
CH3Cl, AlCl3
Chlorobenzene is o, p-directing in electrophilic substitution reaction. The directing influence is explained by
+M of Ph
+I of Cl
+M of Cl
-I of Ph