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Antacids, antihistamines, analgesics, antibiotics

43 questions on Antacids, antihistamines, analgesics, antibiotics from the Chemistry in Everyday Life chapter: 9 NEET level, 16 JEE Main, 18 JEE Advanced. Each one opens with its answer and solution.

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Which of the following drugs lowers the secretion of stomach acid by blocking histamine H2 receptors? NEET level
Which analgesic is also taken in small doses to reduce the chance of a heart attack because it has an anti-blood-clotting action? NEET level
Penicillin, the first antibiotic to be discovered, was obtained from the mould Penicillium notatum by NEET level
Which of the following is a narcotic analgesic? NEET level
Which of the following compounds is commonly used in antacid tablets? NEET level
Which of the following antibiotics is bacteriostatic? NEET level
Salvarsan, the arsenic-containing drug prepared by Paul Ehrlich, was developed for the treatment of NEET level
Cimetidine and ranitidine reduce acid secretion in the stomach without interfering with the allergic actions of histamine. The best explanation is that they JEE Main level
Why is a large excess of sodium hydrogencarbonate not recommended for relieving acidity? JEE Main level
Assertion: Brompheniramine relieves the symptoms of an allergy but does not reduce the secretion of acid in the stomach. Reason: Histamine causes allergic sympt... JEE Main level
A tablet contains 2.50 g of NaHCO3, which reacts completely with excess stomach acid: NaHCO3 + HCl -> NaCl + H2O + CO2. Taking atomic masses H = 1, C = 12, O = ... JEE Main level
Magnesium hydroxide neutralises stomach acid by Mg(OH)2 + 2HCl -> MgCl2 + 2H2O. Using atomic masses H = 1, O = 16 and Mg = 24, how many millimoles of HCl can 1.... JEE Main level
Aspirin relieves pain and fever mainly because it JEE Main level
Paracetamol (p-hydroxyacetanilide) carries which pair of functional groups on its benzene ring? JEE Main level
Heroin is obtained from morphine by JEE Main level
According to the standard NCERT classification, which of the following is a narrow-spectrum antibiotic? JEE Main level
Match the drugs in List I with the correct description in List II. List I: (P) Aspirin, (Q) Morphine, (R) Ofloxacin, (S) Tetracycline. List II: (1) narcotic ana... JEE Main level
Which of the following antibiotics are bactericidal? JEE Main level
Select the correct statements about aspirin. JEE Main level
Select the correct statements. JEE Main level
A skin test is often carried out before a patient is given penicillin because JEE Main level
Four unknown drugs P, Q, R and S have these properties. P: analgesic and antipyretic, not anti-clotting, has a phenolic -OH and an amide group. Q: analgesic, an... JEE Advanced level
A 55-year-old person with a peptic ulcer has fever and needs a drug that is both analgesic and antipyretic. Which choice and reason are correct? JEE Advanced level
Antacid capacity can be compared as millimoles of H+ neutralised per gram of solid (Mg = 24, Al = 27, Ca = 40, Na = 23, C = 12, O = 16, H = 1; each hydroxide io... JEE Advanced level
An antacid tablet contains 0.400 g of Mg(OH)2 and 0.300 g of Al(OH)3. Using atomic masses H = 1, O = 16, Mg = 24 and Al = 27, find the volume in mL of 0.100 M H... JEE Advanced level
A patient has hay fever and also suffers from excess stomach acid. Select the correct statements. JEE Advanced level
Assertion: Taking a very large excess of sodium hydrogencarbonate for acidity is unwise. Reason: Sodium hydrogencarbonate is a strong base like sodium hydroxide... JEE Advanced level
Match the antibiotic in List I with the description in List II. List I: (P) Penicillin G, (Q) Chloramphenicol, (R) Amoxicillin, (S) Ofloxacin. List II: (1) bact... JEE Advanced level
Select the correct statements about early chemotherapeutic agents and penicillins. JEE Advanced level
A patient whose immune system is badly weakened has a serious bacterial infection. Which antibiotic is the more suitable choice and why? JEE Advanced level
The number of free hydroxyl groups in morphine, codeine and heroin respectively is JEE Advanced level
Two freshly prepared white powders X and Y are analgesics. X gives effervescence with aqueous NaHCO3 but no colour with neutral FeCl3. Y gives no effervescence ... JEE Advanced level
A person has hay fever and acid indigestion. Which prescription is rational? JEE Advanced level
Bacterial cultures start with 1.0x10^6 cells per mL. Drug W or drug X is added at 0 h and washed out at 6 h. With W the count is 1.1x10^6 at 6 h and 9.0x10^6 at... JEE Advanced level
Select the correct statements about low-dose aspirin and heart attacks, following the standard NCERT treatment. JEE Advanced level
Select the correct statements about antacids. JEE Advanced level
Select the correct statements, using the standard NCERT classification of antibiotics. JEE Advanced level
Ranitidine is used to reduce acidity in the stomach. It acts by NEET level
Which of the following is a narcotic analgesic? NEET level
Which of the following antibiotics is bacteriostatic rather than bactericidal (standard NCERT classification)? JEE Main level
Which of the following statements are correct? JEE Main level
Aspirin (C9H8O4, molar mass 180 g/mol) is heated with excess NaOH until it is completely converted to disodium salicylate and sodium acetate. The mass of NaOH (... JEE Advanced level
Which of the following statements are correct? JEE Advanced level