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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
Organic Chemistry
What is the functional group of an organic acid called?
aldehydes
ketones
carboxylic acids
ethers
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Characteristics of Acids Bases and Salts
What happens to the solution when pH is less than 7?
it becomes acidic
it becomes basic
it becomes neutral
it becomes amphoteric
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Organic Chemistry
Which of the following helps to ensure antiseptic conditions in hospital operating rooms?
ethylene
acetylene
phenol
methanol
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Chemical Equilibrium
The rate at which the reaction proceeds is directly proportional to the product of the active masses of
products
reactants
catalysts
none of above
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Environmental Chemistry: Atmosphere
Which of the following is produced when dead plant material decays in the absence of air?
chlorofluorocarbons (CFCs)
methane
carbon monoxide
lead compounds
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Biochemistry Introduction
The condensed structural formula of Palmitic acid is
CH3-CH2-CH2-COOH
CH3-(CH2)4-COOH
CH3-(CH2)14-COOH
CH3-(CH2)16-COOH
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Biochemistry Introduction
Upon hydrolysis oligosaccharides form
1 to 8 molecules of simple sugars
10 to 12 molecules of simple sugars
5 to 8 molecules of simple sugars
2 to 9 molecules of simple sugars
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Hydrocarbons
What is the state of tetrachloromethane at room temperature?
solid
liquid
gas
plasma
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Biochemistry Introduction
Kinds of nucleic acids are
one
two
three
four
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Everyday Science
The atmosphere is divided in to
2 layers
3 layers
1 layer
4 layers
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