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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
A 5 percent (w/w) sugar solution means that 5 g of sugar is dissolved in ________ g of water.
90
100
105
95
Author:
rikazzz
Comment
Chemistry
Which of the following substances is used in cold countries to melt ice accumulated on the roads during winter?
salt
urea
sand
oil
Salt lowers the freezing point of ice below zero degree.
Author:
rikazzz
Comment
Chemistry
Most reactive metal among the following is
Sodium
Magnesium
Gold
Silver
Sodium is the most reactive metal.
Author:
rikazzz
Comment
Chemistry
At room temperature most of ionic compounds are:
Amorphous solids
Crystalline solids
Liquids
Gases
Author:
rikazzz
Comment
Chemistry
Which of the following states of matter has the strongest intermolecular forces?
Plasma
Gas
Liquid
Solid
Author:
rikazzz
Comment
Chemistry
What is the atomicity of nitrogen?
3
8
1
2
Author:
rikazzz
Comment
Chemistry
What is the second layer of the earth`s atmosphere?
Exosphere
Mesosphere
Troposphere
Stratosphere
Author:
rikazzz
Comment
Chemistry
Which of the following are the main components of stainless steel?
Iron, Nickel and Chromium
Iron, Nickel and Magnesium
Iron, Bronze and Magnesium
Bronze, Magnesium and Nickel
Stainless steel alloys contain carbon, chromium, nickel, molybdenum, and manganese, phosphorus, sulfur, and silicon as trace elements.
Author:
rikazzz
Comment
Chemistry
In which layer of the earth`s atmosphere do precipitation occur?
Mesosphere
Exosphere
Stratosphere
Troposphere
Author:
rikazzz
Comment
Chemistry
Methyl orange indicator give which of the following colour in an acid solution
Red
Yellow
Orange
Pink
Methyl orange indicator gives red color in acid solution.
Author:
rikazzz
Comment
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