Syllogism # MCQs Practice set

Q.1 Statements: All roses are flowers. Some flowers are lilies. Conclusions: I. Some roses are lilies. II. All lilies are roses.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - No direct relation between roses and lilies can be derived from the statements.
Correct answer is: Neither follows

Q.2 Statements: All pens are pencils. Some pencils are erasers. Conclusions: I. Some pens are erasers. II. All erasers are pens.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - The statements do not establish a direct link between pens and erasers.
Correct answer is: Neither follows

Q.3 Statements: Some cats are dogs. All dogs are animals. Conclusions: I. Some cats are animals. II. Some animals are cats.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - If some cats are dogs and all dogs are animals, it follows that some cats are animals.
Correct answer is: Both follow

Q.4 Statements: All birds are flying creatures. Some flying creatures are bats. Conclusions: I. Some bats are birds. II. Some bats are flying creatures.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - It is given that some flying creatures are bats; hence some bats are flying creatures.
Correct answer is: Only II follows

Q.5 Statements: All chairs are tables. No table is sofa. Conclusions: I. No chair is sofa. II. Some sofas are chairs.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - If no table is sofa and all chairs are tables, then no chair can be sofa.
Correct answer is: Only I follows

Q.6 Statements: Some books are papers. Some papers are pens. Conclusions: I. Some pens are books. II. Some books are pens.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - The common term 'papers' does not create a direct link between books and pens.
Correct answer is: Neither follows

Q.7 Statements: All apples are fruits. Some fruits are sweet. Conclusions: I. Some apples are sweet. II. All fruits are apples.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - The relation between apples and sweetness is not established directly.
Correct answer is: Neither follows

Q.8 Statements: All teachers are educated. Some educated people are scientists. Conclusions: I. Some teachers are scientists. II. All scientists are teachers.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - The statements do not establish a link between teachers and scientists.
Correct answer is: Neither follows

Q.9 Statements: Some cups are plates. No plate is spoon. Conclusions: I. Some cups are spoons. II. Some cups are not spoons.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - Since no plate is spoon and some cups are plates, those cups cannot be spoons.
Correct answer is: Only II follows

Q.10 Statements: All lions are cats. Some cats are not dogs. Conclusions: I. Some lions are not dogs. II. Some dogs are not lions.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - If all lions are cats and some cats are not dogs, those lions fall under 'not dogs'.
Correct answer is: Only I follows

Q.11 Statements: All flowers are trees. No tree is grass. Conclusions: I. No flower is grass. II. Some trees are flowers.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - All flowers being trees implies some trees are flowers; also, no flower can be grass.
Correct answer is: Both follow

Q.12 Statements: All squares are rectangles. Some rectangles are circles. Conclusions: I. Some squares are circles. II. All circles are squares.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - There is no direct relationship between squares and circles.
Correct answer is: Neither follows

Q.13 Statements: No man is perfect. Some perfect beings are angels. Conclusions: I. Some angels are not men. II. All angels are men.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - If no man is perfect and some perfect beings are angels, those angels are not men.
Correct answer is: Only I follows

Q.14 Statements: All stars are suns. No sun is moon. Conclusions: I. No star is moon. II. Some moons are not stars.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - If no sun is moon and all stars are suns, then no star is moon.
Correct answer is: Only I follows

Q.15 Statements: Some fruits are vegetables. All vegetables are green. Conclusions: I. Some fruits are green. II. All fruits are green.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - Since some fruits are vegetables and all vegetables are green, some fruits are green.
Correct answer is: Only I follows

Q.16 Statements: All trains are vehicles. Some vehicles are buses. Conclusions: I. Some trains are buses. II. All buses are trains.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - No direct connection between trains and buses can be derived.
Correct answer is: Neither follows

Q.17 Statements: No pencil is marker. All markers are pens. Conclusions: I. No pencil is pen. II. Some pens are markers.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - Only the second conclusion is valid since all markers are pens.
Correct answer is: Only II follows

Q.18 Statements: Some doctors are teachers. All teachers are educated. Conclusions: I. Some doctors are educated. II. All educated are doctors.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - If some doctors are teachers and all teachers are educated, then some doctors are educated.
Correct answer is: Only I follows

Q.19 Statements: No cat is dog. All dogs are loyal. Conclusions: I. No cat is loyal. II. Some loyal beings are dogs.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - All dogs are loyal; thus, some loyal beings are dogs. First conclusion does not follow.
Correct answer is: Only II follows

Q.20 Statements: Some fruits are mangoes. All mangoes are yellow. Conclusions: I. Some yellow things are fruits. II. Some fruits are yellow.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - Both conclusions logically follow from the given statements.
Correct answer is: Both follow

Q.21 Statements: All engineers are human. Some humans are artists. Conclusions: I. Some engineers are artists. II. Some artists are human.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - The first cannot be concluded; the second is directly given.
Correct answer is: Only II follows

Q.22 Statements: All girls are students. No student is lazy. Conclusions: I. No girl is lazy. II. Some students are girls.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - Both are logical deductions from the premises.
Correct answer is: Both follow

Q.23 Statements: Some toys are dolls. Some dolls are cars. Conclusions: I. Some toys are cars. II. Some cars are dolls.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - Only the second conclusion is directly supported.
Correct answer is: Only II follows

Q.24 Statements: All squares are polygons. Some polygons are rectangles. Conclusions: I. Some squares are rectangles. II. Some rectangles are polygons.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - We cannot conclude the first directly; the second is explicitly true.
Correct answer is: Only II follows

Q.25 Statements: No fish is bird. Some birds are animals. Conclusions: I. Some animals are not fish. II. Some animals are fish.

Only I follows
Only II follows
Both follow
Neither follows
Explanation - Since no fish is bird and some birds are animals, those animals are not fish.
Correct answer is: Only I follows