The type of isomerism shown by cis- and trans- isomers is?
A. optical isomerism B. positional isomerism C. functional isomerism D. geometrical isomerism Correct Answer: Option D – geometrical isomerism
The most common ores of iron include?
A. haematite, malachite and limonite B. chalcolite, calamine and bornite C. magnetite, haematite and bornite D. magnetite, chalcolite and bornite Correct Answer: Option C – magnetite, haematite and bornite
Which of the following gives a precipitate when treated with NaOH solution?
A. AlCl3 B. NH4Cl C. Na2CO3 D. CH3COONa Correct Answer: Option A – AlCl3
When a solution of ammonium trioxocarbonate (IV) is added to a solution of an unknown salt; a white precipitate which is soluble in dilute hydrochloric acid but insoluble in ethanoic acid is formed. This indicates the presence of?
A. Ca2+ B. Na+ C. Zn2+ D. K+ Correct Answer: Option A – Ca2+Products
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