EASY
Earn 100

Select whether the following statement is true or false:

The rising of dough with yeast is an example of a reduction reaction.

50% studentsanswered this correctly

Important Questions on Chemical Reaction and Equations

MEDIUM
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
The colour of NO2 and PbO formed when lead nitrate is heated are:
HARD
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
Why do we apply paint on iron articles?
EASY
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
Which gas is used as preservatives in the juice of fruits, in jam, and drying of fruits?
MEDIUM
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
The electrolysis of acidified water is an example of: 
EASY
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
 Which of the following gases can be used for storage of fresh sample of an oil for a long time?
MEDIUM
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
Fatty foods become rancid due to process of 
MEDIUM
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
Which gas is used as preservative in fruit juice and jams?
HARD
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
Corrosion is an electrochemical phenomenon.
EASY
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
Which one of the following gases is used to prevent rancidity while packing fatty foods?

 
EASY
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
What type of reaction is involved in the rancidity? (Reduction/ Oxidation)
EASY
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
Rancidity of fat develops bad taste and unpleasant odour in butter.
EASY
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
Food materials can be protected from being rancid by keeping them in refrigerators.
MEDIUM
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
Oily and fatty food items are flushed with nitrogen gas because of which one of the following reasons?
EASY
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
What term is used if fats and oils preparation smell bad?
HARD
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
Zinc or aluminium do not corrode because:
MEDIUM
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
This form of corrosion occurs due to concentration difference in a component.
EASY
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
Food items become rancid when fats and oils present in them are:
MEDIUM
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
The term used to indicate the development of unpleasant smell and taste in fat and oil-containing foods due to aerial oxidation is:
EASY
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
What is general name of the chemicals which are added to fat and oil containing foods to prevent the development of rancidity?
MEDIUM
Science>Chemistry>Chemical Reaction and Equations>Effects of Oxidation Reactions in Everyday Life
Fatty foods become rancid because of which one of the following?