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How many atoms are present in 6.0 g of magnesium? [Mg = 24, NA = 6.02 × 1023 mol−1]
1.20 × 1022
2.41 × 1022
1.51 × 1023
3.02 × 1023
Which of the following methods can be used to obtain pure water from a mixture of sand, water and methanoic acid?
Neutralization with NaOH followed by filtration
Neutralization with NaOH followed by distillation
Fractional distillation
Filtration followed by distillation
CH3COOH + C2H5OH → CH3COOC2H5 + H2O (conc. H2SO4)
The reaction above is best described as
esterification
Condensation
saponification
neutralization
Which of the following statements is true about 2- methylpropane and butane
They are members of the same homologous series
They have the same boiling point
They have different number of carbon atoms
They have the same chemical properties
Two organic compounds K and L were treated with a few drops of Fehling's solutions respectively. K formed a brick red precipitate while L, remains unaffected. The compound K is an
alkanol
alkane
alkanal
alkanone
