MCQ on Chemical Reaction and Equation

CBSE 10th Class MCQ CBSE Multiple Choice Questions (MCQ) CBSE NCERT 10th Class MCQ on Science

31- Any reaction hat produce a precipitation can be called a

(A) Reduction reaction

(B) Displacement reaction

(C) Oxidation reaction

(D) Precipitation reaction

 

32- Reactions in which there is an exchange of ions between the reactants are called

(A)  Displacement reaction

(B) Reduction reaction

(C) Double displacement reaction

(D) None of the above

 

33- When one reactant gets oxidized while other gets reduced during a reaction. Such reaction are called

(A) Displacement reaction

(B) Oxidation- reduction reaction

(C) Precipitation reaction

(D) None of the above

 

34- Oxidation-reduction reaction is also known as

(A) Redox reactions

(B) Precipitation reaction

(C) Double displacement reaction

(D) None of the above

 

35- If a substance gains oxygen or loses hydrogen during a reaction. It is

(A) Reduced

(B) Reduction

(C) Oxidised

(D) All of the above

 

36- If a substance loses oxygen or gains hydrogen during a reaction. It is c

(A) Reduced

(B) Oxidised

(C) Reduction

(D) None of the above

 

37- The process of corrosion is commonly known as

(A) Rusting of iron

(B) Corrode

(C) Rusting

(D) None of the above

 

38- When a metal is attacked by substances around it such as moisture, acid etc. It is said to corrode and this process is called

(A) Rusting

(B) Corrosion

(C) Rancidity

(D) None of the above

 

39- ……………………is condition produced by aerial oxidation of unsaturated fat present in foods and other products marked by unpleasant colour or flavour.

(A) Hydrolyzed

(B) Corrosion

(C) Rancidity

(D) None of the above

 

40- Keeping food in air tight containers helps to slow down oxidation. Is this statement True or False.

(A) True

(B) False

 

ANSWERS:

31-(D), 32-(C), 33-(B), 34-(A), 35-(C), 36-(A), 37-(A), 38-(B), 39-(C), 40-(A)