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Everyday Science Mcqs

The valency of carbon Atom is __________ ?

The valency of carbon Atom is __________ ?

A. 1
B. 2
C. 3
D. 4

 
The valency of carbon is 4. As the atomic number of carbon is 6, it has a total of 6 electrons in one atom arranged in the following configuration. it needs to add 4 more electrons to the 2p sub-shell, or lose 4 electrons from the 2s and 2p sub-shells.

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Chemistry Mcqs, Everyday Science Mcqs

Disease which transferred from animal to Human is_________?

Disease which transferred from animal to Human is_________?Sporadic
Epidemic
Endemic
Zoonosis

Disease Transmitted from Animals to Humans. A zoonosis (zoonotic disease or zoonoses -plural) is an infectious disease that is transmitted between species from animals to humans (or from humans to animals).

 

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Biology Mcqs, Everyday Science Mcqs

During rainy season Wooden doors are difficult to open or closure because of ________ ?

During rainy season Wooden doors are difficult to open or closure because of ________ ?

A. Plasmolysis
B. Imbibition
C. Osmosis
D. Diffusion

Wooden door and wooden frame expand during rainy season. On expansion, the door and its frame get misaligned. Hence, doors made of wood are difficult to open or close during the rainy season.
Imbibition is a special type of diffusion that takes place when water is absorbed by solids-colloids causing an increase in volume. Examples include the absorption of water by seeds and dry wood. If it were not for the pressure due to imbibition, seedlings would not be able to emerge from soil.

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Everyday Science Mcqs, General Knowledge MCQs