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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 general formula of alkynes?
cnh2n+2
cnh2n
cnh2n-2
CnHn
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Characteristics of Acids Bases and Salts
K2CO3 is a/an
basic salt
common salt
acid salt
normal salt
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Comment
Organic Chemistry
The first antiseptic used in operation theatre was
alcohol
alkane
acid
phenol
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Characteristics of Acids Bases and Salts
What is the effect of acid on red litmus paper?
it turns blue
it turns pink
it remains red
it becomes colorless
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Organic Chemistry
An alkane with molecular formula C6H14 is called
butane
pentane
hexane
heptane
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Biochemistry Introduction
Which of the following are called building blocks of all proteins?
vitamins
amines
lipids
amino acids
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Comment
Environmental Chemistry: Water
Step of sewage water treatment in which sewage is placed in tanks and aerated with large blowers is called
primary sewage treatment
secondary sewage treatment
activated sludge treatment
chlorination
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Comment
Organic Chemistry
Ethers are formed by the attachment of
two alkyl groups to same oxygen atom
two alkyl group to different oxygen atoms
three alkyl groups to one oxygen atom
four alkyl groups to one oxygen atom
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Comment
Environmental Chemistry: Atmosphere
Which of the following is true about sulfur dioxide?
it is colorless
it is odourless
it is not an air pollutant
it does not cause breathing difficulties
Author:
rikazzz
Comment
Characteristics of Acids Bases and Salts
What is the pH of the tomato?
5.5 – 7.0
6.5 – 7.0
5.5 – 6.5
6.5 – 7.0
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rikazzz
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