All Free Analytical and Logical Reasoning MCQs with Answers
Every Analytical and Logical Reasoning question in the bank, across all chapters, each with the correct answer and a written explanation. Free and unlimited, with no account needed.
2,989 questions · page 117 of 150
- A. lion population
- B. Hyena population
- C. Dung-rolling beetle population
- D. Hare population
Explanation: The "shortly thereafter" part of this question is very important in determining the answer.
Correct answer: Hare population- A. The Mid-Atlantic Ridge is thousands of miles long.
- B. The Mid-Atlantic Ridge is the largest underwater structure in the Atlantic Ocean.
- C. The continents of North America and Europe are moving apart.
- D. The continents of North America and Europe are growing larger at the Mid-Atlantic Ridge.
Explanation: The correct answer is C. The fact that seafloor spreading at the Mid-Atlantic Ridge is causing the Atlantic Ocean to widen by about 5…
Correct answer: The continents of North America and Europe are moving apart.- A. 75
- B. 8/3
- C. 12
- D. 6
Explanation: By law of conservation of momenrum;Iiwi = Ifwf1/2 mr12 wi = 1/2 mr22 wfr12 wi = r22 wf12 *3 = 0.22 wf3 = 0.04 wfwf = 75 revolutions per…
Correct answer: 75- A. blue light but not gravity
- B. gravity but not blue light
- C. both blue light and gravity
- D. neither blue light nor gravity
Explanation: Comparing tubes III and IV, we can see that when there was a height difference in tube III, there were more flies in the upper half (19)…
Correct answer: both blue light and gravity- A. The pupil is made up of proteins that are pigmented to appear to give a black appearance
- B. The pupil can be of any color, not necessarily black
- C. The pupil is a hole that allows light to enter but the light is either absorbed or diffused within the eye before it can exit
- D. The vitreous humor behind the pupil is black in color which gives the transparent pupil a black appearance
Explanation: The pupil is a hole located in the center of the iris of the eye that allows light to strike the retina.
Correct answer: The pupil is a hole that allows light to enter but the light is either absorbed or diffused within the eye before it can exit- A. Yes, they meet at 12:00
- B. Yes, they meet at 15:00
- C. Yes, they meet at 17:00
- D. No, they never meet
Explanation: Given the movements in the question, following is the state after 5 hours (15:00)
Correct answer: Yes, they meet at 15:002327. Why does the burning of a tire yield black smoke while burning stoves in homes rarely produce smoke?
- A. Burning tires cause parts of the tires to break off and fly off in the air, causing the appearance of black smoke
- B. The heat of the fire causes tires to melt and eventually evaporate, as a result, the vapors in the smoke appear black
- C. Combustion of heavy fuels such as tires causes incomplete combustion which yields elemental carbon which is black
- D. None of the above options are correct
Explanation: Thick, black smoke indicates heavy fuels that are not being fully consumed.
Correct answer: Combustion of heavy fuels such as tires causes incomplete combustion which yields elemental carbon which is black- A. The rapid pulling of the table cloth causes the plates and cloth to be charged. The repulsion of like charges then causes a levitation force to lift up the cutlery subtly
- B. The instant nature of the movement coupled with the inertia of the cutlery prevents any movement of the cutlery
- C. The cloth is slippery and offers no friction hence can be slipped out
- D. The cutlery is held permanently in the same position by gravitational force
Explanation: If the tablecloth is pulled slowly, friction (rubbing) between the cutlery and the tablecloth will cause the tablecloth to pull the…
Correct answer: The instant nature of the movement coupled with the inertia of the cutlery prevents any movement of the cutlery- A. The beating loosens the fibers of the carpet causing the dust trapped in them to come loose
- B. The beating movement charges the carpet by friction and repels the dust off of it
- C. The beating causes a reaction force by the carpet which also applies to the dust particles, causing their expulsion
- D. None of these.
Explanation: The inertia of the dust particles residing on the carpet resists the change in the carpet's motion.
Correct answer: The beating loosens the fibers of the carpet causing the dust trapped in them to come loose- A. The gravitational force due to the Moon prevents this
- B. The reaction force to gravity keeps them in a balanced state and prevents them from falling
- C. They are actually falling due to gravity but their horizontal velocity is so large that they end up orbiting instead of hitting the surface
- D. They have thrusters to prevent them from falling down
Explanation: In actuality, satellites are indeed "falling" due to gravity. However, their horizontal velocity is so high that they keep "falling"…
Correct answer: They are actually falling due to gravity but their horizontal velocity is so large that they end up orbiting instead of hitting the surface- A. Men do not take care of their eyes well enough
- B. Men spend more time in front of digital screens than women
- C. Men usually aren't able to distinguish between colors due to some circuitry in their right hemisphere of the brain
- D. Color blindness is a sex-linked genetic disease
Explanation: Since it's passed down on the X chromosome, red-green color blindness is more common in men.
Correct answer: Color blindness is a sex-linked genetic disease- A. Lactic acid bacteria
- B. Lactobacillus Acidophillus
- C. Lactobacillus aureus
- D. Bacillus radicicola
Explanation: Curd may contain a wide variety of bacteria like Lactobacillus acidophilus, Lactococcus lactis, Lactococcus lactis cremoris, etc.
Correct answer: Lactobacillus Acidophillus- A. At the time of sunset, fusion reactions of the Sun are so intense that the color of the Sun's flame changes from yellow to red
- B. The Sun has sides of different colors similar to the Moon's dark and bright side. Hence, at sunset, we are facing the red side of the Sun
- C. The sun's rays have to pass through a larger distance in the atmosphere. Most of the blue and other shorter wavelengths are removed by scattering and red light enters our eye
- D. Plants release red chemicals at the time of sunset which diffuses into the sky and fluoresces, giving the sky a red color
Explanation: When the Sun is setting, the light that reaches you has had to go through lots more atmosphere than when the sun is overhead, hence the…
Correct answer: The sun's rays have to pass through a larger distance in the atmosphere. Most of the blue and other shorter wavelengths are removed by scattering and red light enters our eye- A. 7 billion kg
- B. 320 billion kg
- C. 320 million kg
- D. 2 billion kg
Explanation: There are approximately 8 billion people on Earth. If we approximate the average weight to be 40 kg, we come to the approximate value of…
Correct answer: 320 billion kg- A. The boiling point of water is lower at higher altitudes.
- B. Meat from mountainous animals is stronger than animals on the ground level
- C. Pathogens and pollutants in urban cities located on ground levels make already cause the meat to rot a bit before we begin to cook it
- D. None of the above
Explanation: Because water boils at a lower temperature at higher elevations, foods that are prepared by boiling or simmering will cook at a lower…
Correct answer: The boiling point of water is lower at higher altitudes.- A. To prevent someone from bumping into them and hurting themselves
- B. So that the cool wind directly hits the person's face, causing them instant relief
- C. To set up convection currents to cool the room since the cool air is denser and settles down
- D. It's just a standard, you can place the units anywhere you like
Explanation: Warmer air at the bottom is displaced and due to it being less dense, it rises.
Correct answer: To set up convection currents to cool the room since the cool air is denser and settles down- A. They have cold-shock proteins which allow them to survive via hibernating while they are frozen
- B. In water bodies, only the top layer freezes in winters, allowing aquatic life to survive
- C. The aquatic life migrates out before the water bodies freeze
- D. They do not survive but they lay their eggs before winter starts. The off-spring then recreate the population from scratch
Explanation: Only the top layer of a lake or river freezes, underneath the frozen upper layer the water remains in its liquid form and does not freeze.
Correct answer: In water bodies, only the top layer freezes in winters, allowing aquatic life to survive- A. The greenhouse effect leads to global warming and the solution to global warming is to go green i.e. to plant more trees. Hence it is called the greenhouse effect
- B. The heating effect caused by greenhouse gases is similar to that caused by the glass in a greenhouse
- C. The scientist who invented the term loved the color green
- D. None of the above options are correct
Explanation: The process is called the greenhouse effect because the exchange of incoming and outgoing radiation that warms the planet works in a…
Correct answer: The heating effect caused by greenhouse gases is similar to that caused by the glass in a greenhouse- A. The fast-moving train creates a strong air pressure which can cause you to fall and hurt yourself
- B. The fast movement in front of your eyes will make you feel dizzy and cause you to faint
- C. The impact from any object falling out of the train can be extremely injurious due to the velocity of the train
- D. It's just a disciplinary measure, there is no harm in standing close to a fast-moving train
Explanation: When a fast-moving train passes on a rail, the velocity of the air stream in between the rail and the by-stander standing near the rail is…
Correct answer: The fast-moving train creates a strong air pressure which can cause you to fall and hurt yourself- A. The slippery nature of the soap causes the germs to slip off
- B. The soap traps germs and dirt and is washed off with them
- C. The soap disintegrates grease on the skin due to its non-polar tail
- D. The soap produces free radicles which destroy the germs on our hands
Explanation: The following picture shows the explanation to this question:
Correct answer: The soap disintegrates grease on the skin due to its non-polar tail