All Free Analytical and Logical Reasoning MCQs with Answers

• A. The magnet of the television screen attracts the magnetic hair
• B. The electrostatically charged television screen induces a charge on our hair and attracts it.
• C. The television screens have a glue which makes our hair stick to them
• D. We get goosebumps from standing that close to a screen as part of a reflex action

Explanation: Following use, TV screens attain an electrostatic charge which induces a charge on our hair and attracts it.

• A. The hair clings to the fibers in the cap causing them to be disoriented
• B. None of the above
• C. Sudden exposure to increased sunlight damages the hair
• D. The electrostatic interactions between the hair and the cap cause the hair to become messy

Explanation: friction between the cap and hair yields electrostatic charges leading to the hair being attracted to the cap and as a result, becoming…

• A. Carrying a box to a different room
• B. Pushing a box
• C. Pulling a box using a string
• D. Lifting a box from the ground

Explanation: Work is defined as the component of the force parallel to the displacement multiplied by the magnitude of the displacement.

• A. Jack carrying a bucket of water along a horizontal road
• B. A skydiver falling with uniform velocity towards the ground
• C. Sarah walking up the staircase
• D. Asad swinging a marble tied to a string at uniform speed

Explanation: Work is defined as the force applied on an object causing displacement in the direction of the force.

• A. Pulling a rubber band
• B. Climbing a ladder
• C. A carton sliding on a frictionless horizontal floor
• D. A phone thrown down from the balcony

Explanation: Since there is no frictional force, and the carton is experiencing no other net force, no work can be done

• A. Afsana = 15cm, Sara= 40cm
• B. Afsana = 20cm, Sara = 3cm
• C. Afsana = 40cm, Sara = 15cm
• D. Afsana = 40cm, Sara = 52cm

Explanation: So, Afsana is 40 cm away from the midpoint, and Sara is 52 cm away from the midpoint.Since the seesaw is 2m (200 cm) long, the midpoint is…

• A. There is a microphone attached near the strings, and a speaker connected to it amplifies the volume
• B. The tension in the strings is exceptionally high, which produces a louder sound
• C. Special kinds of strings are used which enable a louder sound to be produced
• D. Resonance in the soundhole allows for amplification of the sound

Explanation: The correct answer is that the guitar's resonance amplifies the sound. The soundhole and the hollow body of the guitar act as a resonating…

• A. To prevent the noise created from marching disturbing the life beneath the bridge
• B. To prevent injury from marching on an incline
• C. To prevent the bridge collapsing due to resonance
• D. To not produce sound which may easily be heard by enemies on the other side

Explanation: At a certain point, the bridge would start oscillating to the same rhythm as that of the marching steps.

• A. Refraction
• B. Frequency Modulation
• C. Stationary waves
• D. Resonance

Explanation: When we tune to different stations, we actually change the frequency of carrier wave at which our system will resonate at.

• A. It cooks food via conduction
• B. It cooks food via convection
• C. It cooks food via resonance
• D. It cooks food via radiation

Explanation: Microwaves operate by emitting electromagnetic waves that match the natural resonant frequency of water molecules.

• A. Clapping hands horizontally
• B. Clapping hands vertically
• C. Water waves
• D. Pulling and pressing a spring

Explanation: Water waves are transverse waves since the motion of particles is perpendicular to the wave's direction of travel, creating surface…

• A. The centrifugal force pushes the water away from the center of gravity, countering gravity.
• B. Water has stuck to the bottom of the bucket.
• C. The inertia of the water causes it to move sideways instead of moving in the direction of gravity.
• D. The water has developed a gravitational attraction with the bucket and does not fall.

Explanation: The water remains in the bucket during swirling due to its inertia. As the bucket moves in a circular path, the water tends to continue…

• A. Mouse
• B. Grasshopper
• C. Rabbit
• D. Birds

Explanation: The number of birds will decrease since snakes can only feed on birds now, so will consume more of them.

• A. E.coli from the stomach
• B. Ciliated cells of the trachea
• C. Red blood cells
• D. Fungi mycelium

Explanation: E.coli being a prokaryote lacks nucleus, has a cell wall and may have a flagella

• A. 2
• B. 4
• C. 8
• D. 16

Explanation: To determine the number of different types of gamete combinations, examine each gene locus: A, B, and D are heterozygous, meaning they…

• A. Cancer
• B. Pneumonia
• C. Cardiovascular disorders
• D. Premature aging

Explanation: Reduced telomerase activity results in faster telomere shortening, leading to cellular senescence and ultimately contributing to premature…

• A. All of the above
• B. Brain damage from low oxygen supply
• C. Malnutrition
• D. Lower birth weight

Explanation: The umbilical cord provides oxygen and nutrients to the fetus. A lack of its functionality would lead to all of the above mentioned symptoms

• A. 5,730 years
• B. 11,460 years
• C. 32,300 years
• D. 28,650 years

Explanation: Half-life is the amount of time required for a substance to decrease to half its initial value.

• A. Battery, voltmeter, ammeter, connecting wires, switch
• B. Battery, galvanometer, 3 known resistors, switch, connecting wires
• C. Battery, ohmmeter, connecting wires
• D. Battery, ammeter, galvanometer, switch, connecting wires

Explanation: The correct answer is Option D. This setup does not have the necessary equipment to measure voltage or resistance directly, as it lacks…

• A. 60kg
• B. 72kg
• C. 48kg
• D. 80kg

Explanation: When the elevator falls in the direction of gravity, the relative acceleration decreases from 10 to 8m/s2.