Logical Reasoning - Argumentation (Difficult)
Practice questions on logical reasoning and argumentation analysis for competitive exams including identifying logical errors, analyzing implicit assumptions, drawing inferences, and evaluating conclusions.
Questions
Directions: Identify the error in the sentence below. The error is one of the five types given in five choices. Mark the correct type of mistake.
My term paper was late because I had to go to the Department of Motor Vehicle to get my driver's license renewed.
- Lacks logical strength
- Is incomplete
- Is not informative
- Is self-contradictory
- Lacks simplicity
Directions: Identify the error in the sentence below. The error is one of the five types given in five choices. Mark the correct type of mistake.
Clinton was able to win the 1996 election because a greater percentage of women voted for him than for Dole.
- Lacks logical strength
- Is incomplete
- Is not informative
- Is self-contradictory
- Lacks simplicity
Directions: In the question below a statement is given followed by two assumptions numbered I and II. You have to consider the statement and the assumption given and decide which of the choices about implicitness of assumption is true.
The product 'X' that you have asked for is not with us but can be made available against firm order from you.
Implications:
I. The product 'X' is not in great demand.
II. The product 'X' is out of stock as new model is coming up.
- If only assumption I is implicit
- If only assumption II is implicit
- If neither I nor II is implicit
- If both the assumptions are implicit
- If either one, but not both, is implicit
Directions: The given passage is followed by several inferences which can be drawn from the facts stated in the passage. You have to examine each inference separately in the context of the passage and decide upon its degree of truth or falsity.
Wind is an inexhaustible source of energy and an aero generator can convert it into electricity. Though not much has been done in this field, the survey shows that there is vast potential for developing wind as an alternative source of energy.
Inferences:
I. Energy by wind is comparatively newly emerging field.
II. The energy crisis can be dealt by exploring more in the field of aero generation.
- If only inference I follows
- If only inference II follows
- If neither inference I nor II follows
- If both the inferences follow
- If either one, but not both, follows
Directions: The given passage is followed by several inferences which can be drawn from the facts stated in the passage. You have to examine each inference separately in the context of the passage and decide upon its degree of truth or falsity.
In film and videotape, it is possible to induce the viewers to project their feelings onto the characters on the screen. In one study, when a camera shot of a baby in a crib was shown, the audience thought the woman's face was registering happiness.
Inferences:
I. The expression on the woman's face was, in actuality blank.
II. A camera shot of a baby in a crib provoked feelings of happiness to the audience.
- If only inference I follows
- If only inference II follows
- If neither inference I nor II follows
- If both the inferences follow
- If either one, but not both, follows
Directions: In the question below a statement is given followed by two conclusions numbered I and II. You have to assume everything in the statement to be true, then consider the two conclusions together and decide which of them logically follows beyond a reasonable doubt from the information given in the statement.
The City Medical College has started a cell which will conduct counselling workshops in the field of stress management to patients and general public.
Conclusions:
I. The hospital has the needed resources to start such activity.
II. Patients and general public feel a need to have such cell in the hospital.
- Neither of the conclusions follows.
- Only conclusion II follows.
- Either conclusion I or II follows.
- Both the conclusions follow.
- Only conclusion I follows.
Directions: In the question below a statement is given followed by two conclusions numbered I and II. You have to assume everything in the statement to be true, then consider the two conclusions together and decide which of them logically follows beyond a reasonable doubt from the information given in the statement.
The commissioner of police has appealed to people not to put up banners which obstruct pedestrian or motor traffic.
Conclusions:
I. Some of the people may respond and will not put up such banners.
II. Policemen will have to keep a watchful eye on the new banners which are being put up on the roads.
- Only conclusion I follows.
- Only conclusion II follows.
- Either conclusion I or II follows.
- Both the conclusions follow.
- Neither of the conclusions follows.
Directions: In the following question, a statement is followed by two assumptions I and II. You are to consider each statement and assumption(s) that follow, and decide which of the assumption(s) is/are implicit in the statement.
Give answer (1) if only I is implicit; (2) if only II is implicit; (3) if both I and II are implicit; (4) if neither I nor II is implicit; (5) if either I alone or II alone is implicit.
Statement:
Education and social changes are complementary, and lead to a steady loss of tradition on people's mind.
Assumptions:
I. There is a direct relationship between education and social change and decline of tradition on people's mind.
II. Traditions can make priceless contribution to society.
- (1)
- (2)
- (3)
- (4)
- (5)
Directions: In the following question, a statement is followed by two assumptions I and II. You are to consider each statement and assumption(s) that follow, and decide which of the assumption(s) is/are implicit in the statement.
Give answer (1) if only I is implicit; (2) if only II is implicit; (3) if both I and II are implicit; (4) if neither I nor II is implicit; (5) if either I alone or II alone is implicit.
Statement:
A few people demanded one-man-one-post in the case of the minister, for strengthening the party and for efficient administration.
Assumptions:
I. No human being can be efficient in two spheres.
II. A person attending to only administration or party work will be able to do much.
- (1)
- (2)
- (3)
- (4)
- (5)
Directions: In the following question, a statement is followed by two assumptions I and II. You are to consider each statement and assumption(s) that follow, and decide which of the assumption(s) is/are implicit in the statement.
Give answer (1) if only I is implicit; (2) if only II is implicit; (3) if both I and II are implicit; (4) if neither I nor II is implicit; (5) if either I alone or II alone is implicit.
Statement:
If water pollution continues at its present rate, it will eventually make oxygen molecules unavailable to water plants.
Assumptions:
I. Water pollution affects the growth of water plants.
II. Water pollution reduces the availability of oxygen in water.
- (1)
- (2)
- (3)
- (4)
- (5)
Directions: In the following question, a statement is followed by two assumptions I and II. You are to consider each statement and assumption(s) that follow, and decide which of the assumption(s) is/are implicit in the statement.
Give answer (1) if only I is implicit; (2) if only II is implicit; (3) if both I and II are implicit; (4) if neither I nor II is implicit; (5) if either I alone or II alone is implicit.
Statement:
War begins in the minds of men, and it is in the minds of men that defense against war has to be built.
Assumptions:
I. Individuals are responsible for waging war.
II. Wars rise because people's thinking is not on the right lines.
- (1)
- (2)
- (3)
- (4)
- (5)
Directions: In the following question, a statement is followed by two assumptions I and II. You are to consider each statement and assumption(s) that follow, and decide which of the assumption(s) is/are implicit in the statement.
Give answer (1) if only I is implicit; (2) if only II is implicit; (3) if both I and II are implicit; (4) if neither I nor II is implicit; (5) if either I alone or II alone is implicit.
Statement:
The Railway authorities have decided to increase the freight charges by 10 per cent, in view of the possibility of incurring losses in the current financial year.
Assumptions:
I. The volume of freight during the remaining period may remain the same.
II. The amount so obtained may set off a part or total of the estimated deficit
- (1)
- (2)
- (3)
- (4)
- (5)