Advertisements
Advertisements
प्रश्न
Match the pairs.
| a. | Photosynthesis | i. | Tendency to lose electrons |
| b. | Water | ii. | Reactant in combustion process |
| c. | Sodium chloride | iii. | Chemical change |
| d. | Dissolution of salt in water | iv. | Covalent bond |
| e. | Carbon | v. | Ionic bond |
| f. | Fluorine | vi. | Physical change |
| g. | Magnesium | vii. | Tendency to form anion |
Advertisements
उत्तर
| a. | Photosynthesis | iii. | Chemical change |
| b. | Water | iv. | Covalent bond |
| c. | Sodium chloride | v. | Ionic bond |
| d. | Dissolution of salt in water | vi. | Physical change |
| e. | Carbon | ii. | Reactant in combustion process |
| f. | Fluorine | vii. | Tendency to form anion |
| g. | Magnesium | i. | Tendency to lose electrons |
संबंधित प्रश्न
What are oxides ?
TRUE \ FALSE
Electrolytic refining is a method in which a thin coating of a metal is done over another metal.
Explain by writing a word equation.
Limestone powder disappears on adding to dilute hydrochloric acids.
Choose the correct option from the bracket and explain the statement giving reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
The conversion of ferrous sulphate to ferric sulphate is ______ reaction.
Give an example of a reaction where the following are involved
Pressure
Give an example of a photochemical reaction.
Give balanced equation for the following conversion affected by heat alone on the substance:
Zinc carbonate to zinc oxide
Complete the table given below.
| Heat on Zinc nitrate | Colour of residue |
_____ is the basic material to manufacture urea.
Classify the following as physical or chemical properties
Zinc dissolves in hydrochloric acid with the evolution of hydrogen gas.
