Everyday Science — All MCQs

Correct Answer: C

Sound travels about 4 times faster in water than in air. This description follows from the defining characteristics and established facts associated with the subject.

Correct Answer: B

Sound travels in air at an average speed of nearly 755 miles per hour. The stated result follows from the relevant physical relationship between force, matter, motion, or energy.

Correct Answer: C

Sound travels Fastest in solid materials then liquid. This description follows from the defining characteristics and established facts associated with the subject.

Correct Answer: C

Sound waves are Longitudinal waves. This description follows from the defining characteristics and established facts associated with the subject.

Correct Answer: A

Speed of object in one direction is called Velocity. The stated result follows from the relevant physical relationship between force, matter, motion, or energy.

Correct Answer: C

Speed of sound in air is 1235 km/h. The stated result follows from the relevant physical relationship between force, matter, motion, or energy.

Correct Answer: C

Speed of sound in dry air at 20 °C is 343 m/s. The stated result follows from the relevant physical relationship between force, matter, motion, or energy.

Correct Answer: B

Speed of sound in water at 20 °C is 1474 m/s. The stated result follows from the relevant physical relationship between force, matter, motion, or energy.

Correct Answer: B

Spinach leaves are rich source of Iron. This description follows from the defining characteristics and established facts associated with the subject.

Correct Answer: C

Spinal card controls all Reflex activities. This description follows from the defining characteristics and established facts associated with the subject.

Correct Answer: A

Spring tides occur on new moon and full moon days because on these days Sun, moon and earth are in a straight line. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.

Correct Answer: A

Stars in the sky appear to twinkle due to a series of refractions. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.

Correct Answer: C

State of matter which has definite shape and volume is called Solid. The term is defined by the subject, process, or characteristic described in the question.

Correct Answer: A

Steam Turbine was introduce by C. A. Parson. Parson. This description follows from the defining characteristics and established facts associated with the subject.

Correct Answer: D

Steering of a car involves: A pair of forces acting along the same line and in opposite direction. This description follows from the defining characteristics and established facts associated with the subject.

Correct Answer: A

Steradian is the unit of Solid angle. This value follows from the standard definition or accepted conversion used for the quantity.

Correct Answer: A

Stethoscope was invented by Rene Laennec. Historical scientific accounts credit this person, place, or event with the development described.

Correct Answer: B

Stomach stores the Food. This description follows from the defining characteristics and established facts associated with the subject.

Correct Answer: A

Stratosphere is present at an altitude between 15 km and 35 km. This description follows from the defining characteristics and established facts associated with the subject.

Correct Answer: B

Stratosphere is the atmospheric layer that absorbs most of Ultraviolet radiation that Earth receives from the Sun. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.