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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
Which one is oxidizing agent:
Al
H2SO4
H2S
NaH
Author:
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Comment
Chemistry
A solution that contains large amount of dissolved solute is called:
Dilute solution
Saturated solution
Super saturated solution
Concentrated solution
Author:
rikazzz
Comment
Chemistry
Rancidity in oils and fats is due to
Oxidation
Reduction
Substitution reaction
Combination reaction
Oxygen is eight times more soluble in fats than in water and it is the oxidation resulting from this exposure that is the primary cause of rancidity. Oxidation primarily occurs with unsaturated fats by a free radical-mediated process.
Author:
rikazzz
Comment
Chemistry
Neutron was discovered by:
Thomson
Chadwick
Bohr
Rutherford
Author:
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Comment
Chemistry
What is the chemical symbol of Iron?
In
Cu
Ir
Fe
Author:
rikazzz
Comment
Chemistry
Al-Razi prepared ethyl alcohol by:
Crystallization process
Chemical Process
Sterilization
Fermentation process
Author:
rikazzz
Comment
Chemistry
Which rays are used for sterilization of medical instruments:
α-rays
β-rays
γ-rays
X-rays
Author:
rikazzz
Comment
Chemistry
Ethanoic acid is also called as
Acetic Acid
Ethanol
Methanol
Glycol
Image result for Ethanoic acid is also called as Acetic acid (CH3COOH), also called ethanoic acid, the most important of the carboxylic acids.
Author:
rikazzz
Comment
Chemistry
A 5 percent (w/w) sugar solution means that:
5 g of sugar is dissolved in 90 g of water
5 g of sugar is dissolved in 100 g of water
5 g of sugar is dissolved in 105 g of water
5 g of sugar is dissolved in 95 g of water
Author:
rikazzz
Comment
Chemistry
Tooth decay starts when pH of mouth
drops below 5
rises above 6
rises above 8
rises above 10
Tooth decay starts when the pH of the mouth is lower than 5.5. Using toothpastes, which are generally basic, for cleaning the teeth can neutralise the excess acid and prevent tooth decay.
Author:
rikazzz
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