GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 074

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 074

731). Which one of the following requires a solvent other than water to dissolve it?
A). sugar
B). common salt
C). dissolved gases
D). sulphur

Answer: sulphur


   
732). The filter beds at water works remove most of the
A). bacteria
B). solutes
C). dissolved gases
D). suspended solids

Answer: suspended solids


   
733). The lowest percentage of carbon is present in
A). galvanised iron
B). pig iron
C). cast iron
D). steel

Answer: steel


   
734). A chemical equation indicates the
A). speed of the reaction
B). extent to which the reaction occurs
C). products of the reaction
D). conditions to speed up the reaction

Answer: products of the reaction


   
735). Ammonia can be obtained by heating an ammonium salt with
A). an acid
B). a caustic alkali
C). an oxidising agent
D). a reducing agent

Answer: an acid

 


736). Chemically dry ice is
A). solid carbon dioxide
B). ice formed from pure water
C). solid sulphur dioxide
D). ice kept at sub zero temperature

Answer: solid carbon dioxide


   
737). The metal present in haemoglobin is
A). iron
B). magnesium
C). copper
D). zinc

Answer: iron


   
738). Stainless steel is an alloy of
A). iron and nickel
B). iron, chromium and nickel
C). iron, chromium and zinc
D). iron and manganese

Answer: iron, chromium and nickel


   
739). Terylene is the polyester of
A). ethylene glycol and phthalic acid
B). hexamethylene diamine and adipic acid
C). phenol and formaldehyde
D). urea and formaldehyde

Answer: ethylene glycol and phthalic acid


   
740). Which of the following hormones contains iodine?
A). adrenaline
B). testosterone
C). insulin
D). thyroxine

Answer: thyroxine