EASY
10th CBSE
IMPORTANT
Earn 100

Food items become rancid when fats and oils present in them are:

87.5% studentsanswered this correctly

Important Questions on Chemical Reactions and Equations

EASY
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 30
To prevent the chips from getting oxidized, bags are flushed with:
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 31
The example of a physical change is:
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 32
Fe2O3+2Al→Al2O3+2Fe is a:
(i) displacement reaction
(ii) combination reaction
(iii) double displacement reaction
(iv) redox reaction
MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 33
Which of the following is a double displacement reaction?
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 34
Which of the following is/are exothermic process(es)?
(i) evaporation of water
(ii) sublimation of ammonium chloride
(iii) quick lime is added to water
(iv) dilution of an acid
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 35
Which of the following is/are endothermic reaction(s)?
(i) evaporation of water
(ii) sublimation of camphor
(iii) condensation of water vapour
(iv) dilution of an acid
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 36
On electrolysis, water decomposes to hydrogen and oxygen. The mole ratio of hydrogen and oxygen is:
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 37
A dilute ferrous sulphate solution is added to acidified permanganate solution. The light purple colour of the solution fades and finally disappears. It is due to: