Which or the following substances is a polypeptide?
Starch
Glycogen
Protein
Fats
Correct answer is C
- A polypeptide is defined as a polymer of amino acids joined together by peptide bonds.
- Proteins are polymers of amino acids.
The IUPAC name of the compound represented by the structure below is ?
2- chloro but-I ,3-diene.
But-1,3-chlorodiene.
2-chloro but-diene.
3 -chloro but -1.3-diene.
Correct answer is A
No explanation has been provided for this answer.
Which of the following substances is an example of a fine chemical?
Sodium hydroxide
Hydrochloric acid
Ethylene
Ammonia
Correct answer is B
- Fine chemicals are complex, single, pure chemical substances, produced in limited quantities.
- Heavy chemicals are produced and handled in large lots and are often in a crude state.
- Some examples of heavy chemicals are ammonia, sulfuric acid, and sodium hydroxide.
Kipps apparatus can be used to prepare?
H\(_2\)
NH\(_3\)
O\(_2\)
H\(_2\)S
Correct answer is D
Kipp's apparatus is a laboratory apparatus specially designed for producing small amount of gases and is used to produce usually hydrogen sulfide.
The group to which elements belong in the periodic table is determined by the number?
electrons
core electrons
valence shells
valence electrons
Correct answer is D
This periodic table shows the valences of element groups.
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