Advertisements
Advertisements
प्रश्न
Give two test for an oxidising agent.
Advertisements
उत्तर
Test For An Oxidising Agent:
- On heating strongly, oxidising agent liberates oxygen and to test oxygen: O2 gas rekindles a glowing splinter.
- On warming oxidising agent with cone. HCl, it liberates chlorine, that bleaches moist litmus paper.
APPEARS IN
संबंधित प्रश्न
Hydrogen burns with a ______ flame and ______ sound is heard.
Identify from the reaction the reactants that undergo oxidation and reduction.
2Mg + O2 → 2MgO
Complete and balance the following equation:
\[\ce{K + H2O -> }\]________+ ________
Which among the following are physical or chemical change?
Burning of Liquefied Petroleum Gas (LPG)
Which among the following are physical or chemical change?
Heating of an iron rod to red hot
Which among the following are physical or chemical change?
Curding of milk
During the reaction of some metals with dilute hydrochloric acid, following observations are made.
The temperature of the reaction mixture rises when aluminium (Al) is added.
Explain this observation giving suitable reason.
A silver article generally turns black when kept in the open for a few days. The article when rubbed with toothpaste again starts shining.
- Why do silver articles turn black when kept in the open for a few days? Name the phenomenon involved.
- Name the black substance formed and give its chemical formula.
The tendency of atoms to have eight electrons in the outer shell is known as ______.
Identify the following reactions as oxidation/reduction/redox reaction
CuO+H2 → Cu+H2O
