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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
Characteristics of Acids Bases and Salts
What is the effect of the base on the skin?
no effect
causes skin cancer
corrosive
causes harm to skin tissue
Author:
rikazzz
Comment
Environmental Chemistry: Atmosphere
Minimum temperature of the troposphere is
17 °C
−55 °C
−5 °C
1800 °C
Author:
rikazzz
Comment
Biochemistry Introduction
Night blindness is caused by the deficiency of
vitamin A
vitamin B
vitamin C
vitamin D
Author:
rikazzz
Comment
Environmental Chemistry: Atmosphere
The thermosphere is hot up to
1800 °C
800 °C
1000 °C
50 °C
Author:
rikazzz
Comment
Organic Chemistry
The general formula for amines is
R-CH
2
R
2
CH
R-NH
2
R-COOH
Author:
rikazzz
Comment
Biochemistry Introduction
Which of the following is oligosaccharide?
glucose
fructose
maltose
galactose
Author:
rikazzz
Comment
Chemical Industries
The first step of metallurgy is
crushing, grinding or pulverizing of the ore
concentration of the ore
extraction of metal
refining of metal
Author:
rikazzz
Comment
Biochemistry Introduction
Which of the following is used as a catalyst in hydrogenation reaction?
Ni
Pd
Pt
all of above
Author:
rikazzz
Comment
Hydrocarbons
Tetra halides undergo dehalogenation forming an alkyne on treatment with
calcium hydroxide
alcoholic potassium hydroxide
sodium hydroxide
Zn dust
Author:
rikazzz
Comment
Chemical Industries
Ore of zinc is called
galena
zinc blende
cinnabar
chromite
Author:
rikazzz
Comment
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