Multiple Choice QuestionsWhich of the following is not a broad spectrum antibiotic ?
Tetracycline
Chloromycetin
Penicillin
None of these
The IUPAC name of compound is :
CH2=CH-CH(CH3)2
1 - isopropylethylene
2 - vinyl propane
3 - methyl 1 - butene
1 , 1 , dimethyl 1 , 2 - propene
Methyl orange is the example of which type of dye ?
Acid dye
Mordant dye
Azo dye
Both (a) and (c)
Which one of the following is not a surfactant?
CH3 - (CH2)15 - (CH3)2N+ - CH3Br-
CH3 - (CH2)14 - CH2 - NH2
CH3 - (CH2)16 - CH2OSO2-Na+
OHC - (CH2)14 - CH2 - COO-Na+
Antiseptics and disinfectants either kill or prevent growth of microorganisms. Identify which of the following is not true.
A 0.2% solution of phenol is an antiseptic while 1% solution acts as a disinfectant.
Chlorine and iodine are used as strong disinfectants.
Dilute solutions of boric acid and hydrogen, peroxide are strong antiseptics.
Disinfectants harm the living tissues.
C.
Dilute solutions of boric acid and hydrogen, peroxide are strong antiseptics.
Antiseptics and disinfectants both either kill or prevent the growth of microorganisms. The main point of difference between these two is that the former (antiseptics) are used for living beings whereas disinfectants are not safe for living tissues. These are actually used for inanimate objects like floors, tiles etc. A substance like phenol in its lower concentration (0.2%) behaves as antiseptic wheras in higher concentration (1%) as disinfectant. Chlorine and iodine are strong disinfectants whereas dilute solutions of boric acid and hydrogen peroxide are mild antiseptics.
Paracetamol is:
methyl salicylate
phenyl salicylate
N-acetyl p-amino phenol
acetyl salicylic acid
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