Chemistry

Organic Chemistry
How many bonding electrons are present in the valence shell of carbon?
two
three
four
five
Author: rikazzz Comment
Biochemistry Introduction
Vitamin A is soluble in
fat
water
lipids
ethers
Author: rikazzz Comment
Organic Chemistry
Organic compounds are only soluble in
non-polar solvents
polar solvents
metallic solvents
non-metallic solvents
Author: rikazzz Comment
Biochemistry Introduction
Which of the following is not included in water-soluble vitamins?
vitamin B
vitamin C
vitamin A
vitamin D
Author: rikazzz Comment
Hydrocarbons
What is given by the incomplete combustion of methane?
carbon dioxide and water
carbon dioxide, water and heat
carbon monoxide, carbon and water
hydrogen and carbon dioxide
Author: rikazzz Comment
Environmental Chemistry: Water
Water that does not form scum is called
hard water
soft water
dirty water
clean water
Author: rikazzz Comment
Hydrocarbons
Which of the following has two halogen atoms on adjacent carbon atoms?
vicinal dihalide
Tetrahalide
acetylene
Trichloromethane
Author: rikazzz Comment
Hydrocarbons
What is the physical state of bromine when reacted with an alkene?
solid
liquid
gas
plasma
Author: rikazzz Comment
Organic Chemistry
Which of the following is widely used in the oxy-acetylene welding and cutting metals?
ethylene
acetylene
phenol
methanol
Author: rikazzz Comment
Environmental Chemistry: Water
What is the percentage of water from oceans?
0
0.002
0.006
0.97
Author: rikazzz Comment

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