Solution

Ingestion of excess fluoride, most commonly through drinking water, can cause fluorosis which affects the teeth and bones. Moderate amounts lead to dental effects, but long-term ingestion of large amounts can lead to potentially severe skeletal problems.

Solution

The reaction is as follows:
2KClO³⁻---heat → 2KCl + 3O₂
In this reaction, if MnO₂ is used, then the reaction become faster due to catalytic activities of MnO₂

(Catalyst is a substance which lowers activation energy of reaction because it provides alternate pathway for reaction. Also, it increases the rate of backward and forward reaction with same extent. Due to this lower activation energy, equilibrium is attained faster but it doesnot change the overall enthalpy of the reaction.)

Solution

In aqueous solution, the most basic amine is (CH3)2NH(CH3)2NH and hence it is most reactive towards dilute hydrochloric acid .

SOLUTION

In bcc
distance closest approach = a(√3/2)
173 = a(√3/2) a ≈200 pm

SOLUTION

Styrene is primarily a synthetic chemical. It is also known as vinylbenzene,ethenylbenzene, cinnamene or phenylethylene. It's a colorless liquid that evaporates easily and has a sweet smell. Styrene can be purified by Vacuum distillation. 

Vacuum distillation is the process of lowering the pressure in the column above the solvent to less than the vapor pressure of the mixture, creating a vacuum, and causing the elements with lower vapor pressures to evaporate off.

SOLUTION

Li−:1s²,2s²;
Be−:1s²,2s²,2p¹. 

In Li, addition of electron has taken place in 2s orbital; in Be−, addition of electron has taken place in 2p orbital loosing its 2s completely filled configuration.

EA_1? for Be is more positive than EA₁? for Li.  

Thus, Be− is the least stable.

Solution

Acetaldehyde

Solution

A mixture of acetic acid (a weak acid) and sodium acetate ( its salt with strong base sodium hydroxide) acts as acidic buffer.

Solution

The Tyndall effect is light scattering by particles in a colloid or in a very fine suspension.
Coagulation is a chemical process that involves neutralization of charge whereas flocculation is a physical process and does not involve neutralization of charge.
Electrophoresisstrong - > is the motion of dispersed particles relative to a fluid under the influence of a spatially uniform electric field. Electrophoresis of positively charged particles is sometimes called cataphoresis, while electrophoresis of negatively charged particles is sometimes called anaphoresis.
Electro-osmosisstrong - > refers to the movement of liquid in a porous material due to an applied electric field