Methanol is toxic. Ingestion of methanol leads to:
A. Blindness or death
B. Kidney failure
C. Liver cirrhosis
D. Lung cancer
Answer: Option A
Solution (By JKExamLibrary)
Methanol is metabolized in the body to formaldehyde and formic acid, which are highly toxic and can damage the optic nerve, causing permanent blindness or even death if ingested in significant amounts. Ethanol is used as an antidote because it competitively inhibits methanol metabolism by alcohol dehydrogenase. Methanol is used as industrial solvent and in illegal liquor (hooch) sometimes resulting in mass poisoning.
Consider the following statements: 1. A buffer solution resists changes in pH upon adding small amounts of acid or base. 2. A buffer is made of a strong acid and its conjugate base. Which is/are correct?
Explanation:
A buffer solution maintains a relatively constant pH when small amounts of strong acid or base are added. However, it is typically composed of a weak acid and its conjugate base (or a weak base and its conjugate acid). A strong acid completely dissociates and cannot form a buffer system. Thus, only statement 1 is correct.
Explanation:
Crude oil is separated into fractions (petrol, kerosene, diesel, etc.) based on boiling points by fractional distillation. Cracking, reforming are secondary processes.
Explanation:
Jacques Charles formulated the law: V ∝ T at constant P. Hence Charles' law. Gay-Lussac's law relates pressure and temperature at constant volume. Boyle's law: pressure-volume at constant temperature. Avogadro's law: volume-moles at same T & P. Charles also was a pioneer in ballooning.
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