Advertisements
Advertisements
प्रश्न
Classify the following as physical or chemical properties
Most metal oxides form alkalis on interacting with water.
Advertisements
उत्तर
Chemical property
APPEARS IN
संबंधित प्रश्न
Changes in which new substances are formed are called ______ changes.
Copper carbonate when heated, it turns :
Explain the following reaction with one suitable example of Combination reactions .
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 |
Give reason for the following:
Molybdenum is used in the manufacture of ammonia.
What do you observe when Cl2 is passed through potassium iodide (KI) solution.
Give reason for the following:
Even though rusting is an exothermic reaction, the heat evolved when an iron nail rusts is unnoticeable.
State the following reaction represent oxidation or reduction.
\[\ce{H->H+}\]
Two chemical species X and Y combine together to form a product P which contains both X and Y
\[\ce{X + Y -> P}\]
X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following concerning the species X, Y and P are correct?
(i) P is a compound
(ii) X and Y are compounds
(iii) X and Y are elements
(iv) P has a fixed composition
______ is the chemical name of slaked lime.
