Class XII Chemistry Biomolecules 4

Attempt now to get your rank among 1273 students!

Question 1

In Zeiger Natta polymerization of ethylene, the active species is

• AAlCl₃
• BEt₃Al
• CCH₂CH₂
• DTi³⁺

Question 2

Which of the following is an elastomer?

• AVulcanized rubber
• BDacron
• CPolystyrene
• DMelamine

Question 3

Buna-N synthetic rubber is a copolymer of:

• A and H₂C = CH – CH = CH₂
• BH₂C = CH – CH = CH₂ and H₅C₆ – CH = CH₂
• CH₂C = CH – CN and H₂C = CH – CH = CH _­2
• DH₂C = CH – CN and

Question 4

In a protein molecule various amino acids are linked together by

• A-glycosidic bond
• Bpeptide bond
• Cdative bond
• D-glycosidic bond

Question 5

The secondary structure of a protein refers to

• Aα-helical backbone
• Bhydrophobic interactions
• Csequence of α-amino acids
• Dfixed configuration of the polypeptide backbone

Question 6

[NH(CH₂)₆NHCO(CH₂)₄CO]_n is a :

• Aco-polymer
• Baddition polymer
• Cthermo-setting polymer
• Dhomopolymer

Question 7

Monomer of   

• A2-methyl propene
• Bstyrene
• Cpropylene
• Dethane

Question 8

The monomers used in preparation of dextron are

• Alactic acid and glycollic acid
• B3-Hydroxy butanoic acid and 3-Hydroxy pentanoic acid
• Cstyrene and 1, 3-Butadienc
• Dhexamethylenediamine and adipic acid

• 1273 attempts
• 11 upvotes
• 42 comments