Question

Answer the following questions in one sentence. 04

1) Why do some objects sink in water ?

2) What is air ?

3) What is a solution ?

4) What is the full from of PEM ?​

Answer 1

✬ ANSWER ✬

1.) Why do some objects sink in water ?

• If the density of object is more than that of water then the object will sink in water or if the density is low than water then it'll float.

2.) What is air ?

• Air is the mixture of many gases like nitrogen, oxygen, carbon dioxide & also of tiny dust particles present in the atmosphere.

3.) What is a solution ?

• Solution is a type of homogeneous mixture substances. Substances may be two or more. For example - Sugar in water , Salt in water.

4.) What is the full from of PEM ?

• Full form of PEM is Protein Energy Malnutrition. It the the lack of protein and energy in a person's body.

Answer 2

Answer:

$\longmapsto \: \sf\bold{\pink{Answer\: the\: following\: question\: in\: one\: sentences\: :-}}$

1) Why do some objects sink in water ?

$\implies$ The object which have density more than water sink in water.

$\rule{150}{2}$

2) What is air ?

$\implies$ Air is the invisible mixture of gases that surround the Earth.

$\rule{150}{2}$

3) What is a solution ?

$\implies$ A solution is a homogeneous mixture of two or more substance.

Example : Alcohol in water, benzene in toluene.

$\rule{150}{2}$

4) What is the full form of PEM ?

$\implies$ The full form of PEM is Protein - Energy Malnutrition (PEM).

$\leadsto$ Two types of Protein - Energy Malnutrition (PEM) are :

• Marasmus
• Kwashiorkor

$\rule{150}{2}$