4921. According to the definition of 1 KWh, a 100 watt bulb consumes one unit of electricity in_______?
✅ C. 10 hours
Everyday Science MCQs – Page 247
4922. Melanoma (skin cancer) is associated with ____?
✅ A. ozone depletion
4923. Most of the ozone in the atmosphere is concentrated in the_______?
✅ C. Stratosphere
4924. The shape of the external ear is due to_______?
✅ B. Elastic cartilage
4925. The temperature at which water boils depends mainly on _______?
✅ C. Air pressure
4926. Which of the following Rays are more Penetrating?
✅ C. Gamma rays
4927. Candela is the basic unit of_______?
✅ B. luminous intensity
4928. What is it called when the Earth is closest to the sun ________?
✅ A. Perihelion
4929. Which layer of the atmosphere reflects radio waves back to the earth’s surface?
✅ D. Ionosphere
4930. Segmented Worms take breath through:____?
✅ C. Moist Skin
4931. Who invented the Hot Air Balloon?
✅ A. Montgolfier
4932. The average acceleration caused by gravity per second is_______?
✅ A. 32 feet
4933. It is observed that the total pressure exerted by air on the man of average size is around 14.7 lb wt. per square inch. But the man feels quite comfortable,. It is because of_____?
✅ B. An equal and opposite pressure acts from inside
4934. The SI standard of time is based on________?
✅ E. none of these
4935. The instrument that measures temperature, pressure, and humidity at various altitudes in the atmosphere ______?
✅ A. Radiosonde
4936. Study of energy production in living bodies is called____?
✅ C. Bioenergetics
4937. Substance whose atoms can be split are known as _____ materials.
✅ A. Fissionable
4938. Which of the following organisms releases molecular oxygen into water?
✅ C. Phytoplankton
4939. What is Melioidosis?
✅ B. Infectious disease
4940. The contraction and expansion of the movement of the walls of the food pipe after entering the slightly digested food is known as ______ movement
✅ C. Peristaltic