Advertisements
Advertisements
Question
In the experiment for determining the percentage of water absorbed by raisins, we do the final weighing of the raisins after keeping them dipped in water for about one hour. For the accuracy of the result, the extra water from the surface of the soaked raisins is removed by
Options
Rubbing with cotton cloth
Hot air blower
Dry cotton wool
Filter paper
Advertisements
Solution
Not in Current Syllabus
Filter paper
The raisins after being soaked in water were dried on a piece of filter paper in order to remove the excess water present on their surface.
APPEARS IN
RELATED QUESTIONS
Balance the following chemical equation.
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Give one example of a chemical reaction characterised by the formation of a precipitate.
Give one example of a chemical reaction characterised by a change in state.
Give one example of an exothermic reaction.
Balance the following equation. Also name the product formed.
`"NaNO"_3 → "NaNO"_2 + "O"_2` Name of product (s)
Explain the terms with examples.
Balanced equation
Balance the following equation:
H2O + Cl2 → HCl + O2
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate moles of salt formed.
Representation of the results of a chemical change – is a chemical equation.
For the equation: FeCl3 + 3NH4OH 3NH4Cl + Fe(OH)3 ↓
Answer the following:
Write the word equation for the above molecular equation.
CaCO3 + 2HCl[dil.] → CaCl2 + H2O + CO2 [g]
State the information provided by the above chemical equation.
