WorksheetsPhy and Chem MCQs PT2
Total questions: 11
Worksheet time: 6mins
An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?
Baking powder
Lime
Ammonium hydroxide solution
Hydrochloric acid
Sodium carbonate is a basic salt because it is a salt of:-
strong acid and strong base
weak acid and weak base
strong acid and weak base
weak acid and strong base
Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is:-
1:1
2:1
4:1
1:2
Which of the following is an example of simple displacement reaction:-
The electrolysis of water
The burning of methane
The reaction of a metal with an acid
The reaction of two solutions to form precipitate
When a small amount of acid is added to water, the phenomena which occur are:-
A. Dilution
B.Neutralization
C. Formation of H3O+ ions
D. Salt formation
Both A and B
Both A and C
Only B
Only D
Which of the following salts do not have the water of crystallization?
A. Bleaching powder
B. Plaster of paris
C. Washing soda
D. Baking soda
Both A and C
Only D
Both A and D
Only A
In an aqueous solution 'A', Phenolphthalein solution color is pink. On addition of an aqueous solution 'B' to 'A', the pink color disappears. Which of the following statement is true for solution 'A' and 'B'.
A is strongly basic and B is a weak base
A is strongly acidic and B is a weak acid
A has pH greater than 7 and B has pH less than 7
A has pH less than 7 and B has pH greater than 7
Which of the following statements is true?
A convex lens has 4 dioptre power having a focal length 0.25 m
A convex lens has -4 dioptre power having a focal length 0.25 m
A concave lens has 4 dioptre power having a focal length 0.25 m
A concave lens has -4 dioptre power having a focal length 0.25 m
The Change in focal length of an eye lens is caused by the action of the:
Pupil
Retina
Ciliary muscles
Iris
Assertion : HCl is a stronger acid than acetic acid.
Reason: On dissociation, HCl yields lesser hydrogen ions for the same concentration as compared to acetic acid.
Both A and R are correct. And R is the correct explaination of A
Both A and R are correct but R is not the correct explaination of A
A is true but R is false
A is false but R is true
Assertion(A): A normal human eye can clearly see all the objects beyond certain minimum distance. Reason (R): The human eye has capacity of adjusting the focal length of eye lens.
Both A and R are correct and R is the correct explaination of A
Both A and R are correct but R is not the correct explaination of A
A is true but R is false
A is false but R is true
