Question
Which of the following pair is correct? I.
Opaque – do not allow light to pass through them II. Translucent – allow light to pass through them partiallySolution
Opaque objects: Objects that do not allow light to pass through them and prevent see-through are called opaque objects. Example wood, plate, iron rod, etc. Translucent objects: Objects that allow the most light to pass through them (but not whole) and help in seeing things partially through it are called translucent objects. Example: filter paper.
The PH of an aqueous solution of a salt is 4.5. Which of the following about this salt is true?
Typhoid is caused by ______.
What is the term used for the process of removing calcium and magnesium from hardwater?Â
A colour-blind person cannot –
Glycol is used to manufacture which of the following?
The term 'Ecology' was first coined by:
The surface temperature of the Sun is nearly -
Which of the following signaling is involved in Paracrine signaling?
Addition of ethylene dibromide to petrolÂ
The term 'Biomagnification' refers to: