organic chemistry - Category wise Question and Answer Practice Test with Solutions

organic chemistry PRACTICE TEST [3 - EXERCISES]

objective questions set 1

set 2

set 3

Question : 16

The heteroatoms present in CH3 — CH2 — O — CH2— CH2 Cl are

  1. Oxygen
  2. Carbon
  3. Hydrogen
  4. Chlorine

a) (iii) and (iv)

b) (ii) and (iii)

c) (i) and (ii)

d) (i) and (iv)

Answer: (d)

Question : 17

Organic compounds will always contain

a) nitrogen

b) hydrogen

c) carbon

d) sulphur

Answer: (c)

Question : 18

The prerequisites for biotechnological production of antibiotics is

  1. to search an antibiotic producing micro-organism
  2. to isolate the antibiotic gene
  3. to join antibiotic gene with E.coli plasmid

a) 1 and 3

b) 1, 2 and 3

c) 2 and 3

d) 1 and 2

Answer: (b)

Question : 19

What is “Kiss of death” ?

a) A good wine flavour working on which scientist won the 2004 Nobel Prize in Chemistry.

b) A flower whose smell was the basis of a discovery on smell that led to award of 2004 Nobel Prize in Medicine.

c) A chemical whose discovery ultimately won the scientists the 2004 Nobel Prize in Chemistry.

d) A network in brain associated with smell whose discovery led the scientists win the 2004 Nobel Prize in Physiology and Medicine.

Answer: (c)

Aaron Ciechanover, Avram Hershko and Irwin Rose have been awarded the Nobel Prize in Chemistry in 2004 for “...helping to understand how the human body gives the ‘kiss of death’ to rogue proteins to defend itself from diseases like cancer” (Reuters, 6 October 2004).

These scientists—the former two from Israel, the latter from the US — discovered ubiquitin-mediated protein degradation.

Knowledge of ubiquitin-mediated protein degradation offers an opportunity to develop drugs against cervical cancer, cystic fibrosis and other diseases.

Question : 20

Match Column-I with Column-II :

Column-I Column-II
A. Carbon black P. Water filters
B. Diamond Q. Fuel
C. Coke R. Jewellery
D. Charcoal S. Filler in automobiles
Select the correct answer from the codes given below: (A) (B) (C) (D)

a) A-P; B-Q; C-Q; D-S

b) A-S; B-R; C-P; D-Q

c) A-Q; B-R; C-S; D-P

d) A-S; B-R; C-Q; D-P

Answer: (d)

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