CBSE
Multiple Choice QuestionsWhich of the following is a use of alum?
Making explosives
Bleaching clothes
Water softening
All of the above
Among the following, the narrow spectrum antibiotic is :
Ampicillin
Amoxycillin
Chloramphenicol
Penicillin G
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.
Soaps can be classified as :
carbohydrates
ether
salts of fatty acids
none of these
Phenacetin is used as :
antipyretics
antiseptics
analgesic
antimalarials
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+
Paracetamol is:
methyl salicylate
phenyl salicylate
N-acetyl p-amino phenol
acetyl salicylic acid
