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Chemistry
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Acids Bases and Salts
23
Biochemistry Introduction
217
Characteristics of Acids Bases and Salts
114
Chemical Industries
66
Environmental Chemistry: Atmosphere
95
Environmental Chemistry: Water
61
Chemical Equilibrium
46
Hydrocarbons
86
Organic Chemistry
92
The Atmosphere
25
Show/Hide Answers
Chemistry
Alum is:
Single salt
Double salt
Triple salt
Normal salt
Author:
rikazzz
Comment
Chemistry
Functional group in butanal is
CHO
COOH
COOR
CO
In Butanal, the functional group is −CHO. In Butanol, the functional group is −OH.
Author:
rikazzz
Comment
Chemistry
Sodium is obtained/isolated from its metal chloride ore by the process of
Electrolysis
Hydrolysis
Carboxylation
Decarboxylation
Sodium is extracted from it`s ore by electrolysis of fused sodium chloride. The process is usually carried out ia a special electrochemical cell called the downs cell.
Author:
rikazzz
Comment
Chemistry
An example of saturated carbon compound is
Ethane
Ethene
Propene
Alkene
Example of saturated carbon compound is Ethane (C2H6).
Author:
rikazzz
Comment
Chemistry
pH of the human blood lies in the range of
7.35 to 7.45
7.52 to 7.72
6.21 to 6.61
7.00 to 7.21
Blood is normally slightly basic, with a normal pH range of about 7.35 to 7.45. Usually the body maintains the pH of blood close to 7.40. A doctor evaluates a person`s acid-base balance by measuring the pH and levels of carbon dioxide (an acid) and bicarbonate (a base) in the blood.
Author:
rikazzz
Comment
Chemistry
The number of moles of solute dissolved in 1L or 1 dm3 of a solution is called.
Molarity
Normality
Mole fraction
Molality
Author:
rikazzz
Comment
Chemistry
Which of the following when added to pure water usually increases its surface tension?
Detergent
Sodium Chloride
Kerosene oil
Phenyl
The surface tension of water is increased when salt is added to it. Although the strong interactions between sodium cations and partial negative oxygen, and chloride anions and partial positive hydrogens disrupt some hydrogen bonding between water molecules, they actually strengthen the surface tension of water.
Author:
rikazzz
Comment
Chemistry
Mass number of an element represents sum of number of
Protons and Neutrons
Protons and Electrons
Electrons and neutrons
None of these
Author:
rikazzz
Comment
Chemistry
When carbon dioxide is passed through lime water, the white precipitate obtained is
Calcium Carbonate
Sodium Carbonate
Potassium Carbonate
Zinc Carbonate
When carbon dioxide is passed through lime water, it turns milky due to formation of white precipitate in form of calcium carbonate.
Author:
rikazzz
Comment
Chemistry
Solubility is usually expressed in grams of solute per gram of solvent.
10
100
1,000
10,000
Author:
rikazzz
Comment
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