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प्रश्न
Dry raisins were soaked in water for 2 hours, to determine the percentage of water absorbed by raisins. Before final weighing of swollen raisins, the extra water left on the surface of soaked raisins was removed by:
पर्याय
Gently rubbing with cotton cloth
Hot air blower
Dry cotton wool
Filter paper
उत्तर
Not in Current Syllabus
The raisins after being soaked in water are dried on a piece of filter paper in order to remove the excess water present on their surface.
The Correct Answer is D
संबंधित प्रश्न
Write the balanced chemical equation for the following reaction.
\[\ce{Zinc + Silver nitrate -> Zinc nitrate + Silver}\]
State one characteristic of the chemical reaction which takes place when dilute sulphuric acid is added to barium chloride solution.
Balance the following equation .
N2 + O2 → NO
Write your observation and name the product when zinc reacts with dilute hydrochloric acid.
Balance the following equation:
Fe + H2O → Fe3O4 + H2
Write the balanced chemical equations of the following reactions.
chlorine + sulphur dioxide + water → sulphuric acid + hydrogen chloride
Balance the given chemical reaction as per the instructions below.
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Write the number of atoms of various elements in the reactants and products.
Which of the following is not a physical change?
Which among the following statement(s) is(are) true? ‘Exposure of silver chloride to sunlight for a long duration turns grey due to
- the formation of silver by decomposition of silver chloride
- sublimation of silver chloride
- decomposition of chlorine gas from silver chloride
- oxidation of silver chloride
Complete the following blank in the equation as indicated.
\[\ce{CaH2_{(s)} + 2H2O_{( aq)}-> Ca(OH)2_{(s)} + 2H2_{(g)}}\]
Grams: 42 g + ______ `→` ______ + ______
