हिंदी

Dry raisins were soaked in water for 2 hours, to determine the percentage of water absorbed by raisins. Before final weighing of swollen raisins - Science

Advertisements
Advertisements

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:

विकल्प

  • Gently rubbing with cotton cloth

  • Hot air blower

  • Dry cotton wool

  • Filter paper

MCQ
Advertisements

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

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2011-2012 (March) Dehli Set 2

वीडियो ट्यूटोरियलVIEW ALL [4]

संबंधित प्रश्न

What are the various ways in which a chemical equation can be made more informative? Give examples to illustrate your answer.


What is meant by chemical reaction? Explain with the help of an example.


Give one example  of an endothermic reaction.


Is Burning of natural gas an endothermic reaction or an exothermic reaction?


When a mixture of gases X and Y is compressed to 300 atm pressure and then passed over a catalyst consisting of a mixture of zinc oxide and chromium oxide (heated to a temperature of 300°C), then an organic compounds Z having the molecular formula CH4O is formed. X is a highly poisonous gas which is formed in appreciable amounts when a fuel burns in a limited supply of air; Y is a gas which can be made by the action of a dilute acid on an active metal; and Z is a liquid organic compound which can react with sodium metal to produce hydrogen gas.
(a) What are X, Y and Z?
(b) Write a balanced chemical equation of the reaction which takes place when X and Y combine to form Z. Indicate the conditions under which the reaction occurs.


Write word equation for the following skeletal equation:

\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]


Write the chemical equation for the following word equation and balance them.

Magnesium + Sulphuric acid → Magnesium sulphate + Hydrogen


\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]

0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate moles of chlorine gas formed.


Identify the type of reaction taking place of the following case and write the balanced chemical equation of the reaction:
Zinc reacts with silver nitrate to produce zinc nitrate and silver.


Balance the following simple equation:

ZnS   +   O2  →  ZnO + SO2 


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×