which of the following polymers is suitable for packaging and electrical insulation?
which of the following polymers is suitable for packaging and electrical insulation? A. polyamide B. polyethene C. polycarbonate…
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Hydrogen is readily released when dilute hydrochloric acid reacts with
Hydrogen is readily released when dilute hydrochloric acid reacts with A. Cu B. Na C. Au D. Ag…
The intermediate product formed when ethanol is progressively oxidized to ethanoic acid with potassium heptaoxodichromate…
The intermediate product formed when ethanol is progressively oxidized to ethanoic acid with potassium heptaoxodichromate (IV) is A.…
The boiling of fat and aqueous caustic soda is referred to as
The boiling of fat and aqueous caustic soda is referred to as A. hydrolysis B. esterification C. acidification…
The most important use of hydrogen is in the
The most important use of hydrogen is in the A. manufacture of ammonia B. manufacture of methyl alcohol…
Ordinary glass is manufactured from silica, CaCO3 and
Ordinary glass is manufactured from silica, CaCO3 and A. Na2CO3 B. K2CO3 C. K2SO4 D. NaHCO3 Correct Answer:…
A red precipitate of copper (I) carbide is formed when ammonium solution of copper (I)…
A red precipitate of copper (I) carbide is formed when ammonium solution of copper (I) chloride is introduced…
The reaction of an alkene with hydrogen in the presence of catalyst is
The reaction of an alkene with hydrogen in the presence of catalyst is A. a substitution reaction B.…
The number of isomers formed by C6H14 is
The number of isomers formed by C6H14 is A. 4 B. 5 C. 2 D. 3 Correct Answer:…
Which of these pairs are synthetic and natural macromolecules respectively?
Which of these pairs are synthetic and natural macromolecules respectively? A. Haemoglobin and nylon, creatine and polyethylene B.…