Science

Question 1

Formula of naphthalene

Answer 1

C10 H8, deca carbon octa hydrite

Question 2

Why our nose is selective to oxygen

Answer 2

The nasal mucosa, particularly the olfactory epithelium located in the upper part of the nasal cavity, plays a crucial role in detecting and filtering oxygen as it enters the body.

Question 3

A word which define how much something evaporates

Answer 3

Volatility

Question 4

The force of attraction between the particles of the same substances known as

Answer 4

Cohesion

Question 5

Formula of Ammonium Chloride

Answer 5

[Nh4]Cl, nitrogen tetra hydride chloride

Question 6

What is the chemical formula of ammonia

Answer 6

Nitrogen trihydride, NH3

Question 7

What is adiabatic expansion

Answer 7

When a gas expands without transferring heat to its surrounding

Question 8

Why when a gas escapes from low pressure to high pressure, it reduces its thermal energy, though its kinetic energy is very high

Answer 8

Because the rate of collusion is low

Question 9

Acetone formula

Answer 9

C36HO, tricarbon hexahydrite O

Question 10

What is the solution of iodine and alcohol called which is also known as an antiseptic

Answer 10

Tincture of iodine

Question 11

Why materials sublimate

Answer 11

Because of high vapor pressure

Question 12

What is an aqueous solution

Answer 12

It’s a solution where the water is solvent, and the dissolved substance may be a solid liquid or a gas.

Question 13

What is solvent in chemestry

Answer 13

A solvent is any substance, usually liquid, which is capable 9f dissolving many substances in it. Example water.

Question 14

What you mean by capillary action

Answer 14

Capillary action is the ability of a liquid to flow in narrow spaces or tubes, against the force of gravity, due to the combined effects of surface tension, cohesion, and adhesion. This phenomenon occurs because the liquid molecules are more attracted to the surface of the container (adhesion) than to each other (cohesion). As a result, the liquid climbs or moves upward in narrow tubes or porous materials, such as soil, paper, or a thin glass tube, until the forces of gravity and surface tension reach an equilibrium.

Question 15

What is the process called where we remove the low density material by pouring the above one

Answer 15

Decantation

Question 16

What is the chemical formula of phenyl

Answer 16

Hexa carbon Penta hydride, C6H5