Everyday Science MCQs

Page No. 122

In night, when photosynthesis is stopped, plants__________?


atake in Carbon Dioxide


btake in Oxygen


cgive off Carbon Dioxide


dgive off Oxygen



The device used to convert Alternate Current into Direct Current is called?


aAnemometer


bBattery


cGalvanometer


dRectifier


View Answer Rectifier

The fourth state of matter is?


aWater


bSalts


cVapours


dPlasma


View Answer Plasma

About 50% of the Earth’s crust, including the waters on the Earth and atmosphere, is?


aOxygen


bCabon Dioxide


cSilicon


dClay


View Answer Oxygen

Acid rain is mainly caused by emissions of __________ in the atmosphere?


aSulfur Dioxide and Potassium Nitrate


bSulfur and Charcoal


cNitrogen Oxide and Potassium Nitrate


dSulfur Dioxide and Nitrogen Oxide



In general, wind speed of 10 –13 kph caused_______?


aminor or no damage


bconsiderable damage


csevere damage


dextreme damage


View Answer minor or no damage

Water covers __________ of the Earth’s surface?


a61%


b67%


c71%


d76%


View Answer 71%

Who is considered the founder of meteorology?


aAristotle


bPlato


cEinstein


dNewton


View Answer Aristotle

Wind energy is the __________ energy.


aPotential


bTransverse


cKinetic


dMechanical


View Answer Kinetic

The energy value of food is measured in_______?


aJoule


bCalories


cTesla


dProteins


View Answer Calories

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