Chemistry Exam - Question

Q121. Williamson's synthesis is widely used in the laboratory preparation of
(a) alcohols
(b) ethers
(c) aldehydes
(d) esters

Q122. Methanoic and ethanoic acids can be distinguished by the action of
(a) NaHCO3
(b) NaOH
(c) Tollen's reagent
(d) SOCl2

Q123. In drinking water supply, which of the following treatments is not involved
(a) Coagulation
(b) Sedimentation
(c) Softening
(d) Disinfection

Q124. One name that is not a nuclear activity unit
(a) Bequerel
(b) Openheimer
(c) Rutherford
(d) Curie

Q125. Two moles of an ideal gas expand freely into vacuum. The work done by the gas is
(a) 2J
(b) 4J
(c) infinity
(d) 0

Q126. The scientist who experimentally proved the existance of positron is
(a) Fermi
(b) Anderson
(c) Bohr
(d) Bethe

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