1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
In both DNA and RNA, heterocyclic base and phosphate ester linkages are at-
A
$$C_5^{'}$$ and $$C_2^{'}$$ respectively of the sugar molecule
B
$$C_2^{'}$$ and $$C_5^{'}$$ respectively of the sugar molecule
C
$$C_1^{'}$$ and $$C_5^{'}$$ respectively of the sugar molecule
D
$$C_5^{'}$$ and $$C_1^{'}$$ respectively of the sugar molecule
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Which of the following is fully fluorinated polymer?
A
Neoprene
B
Teflon
C
Thiokol
D
PVC
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The decreasing order of nucleophilicity among the nucleophiles

AIEEE 2005 Chemistry - Basics of Organic Chemistry Question 177 English
A
$$\left( C \right),\left( B \right),\left( A \right),\left( D \right)$$
B
$$\left( B \right),\left( C \right),\left( A \right),\left( D \right)$$
C
$$\left( D \right),\left( C \right),\left( B \right),\left( A \right)$$
D
$$\left( A \right),\left( B \right),\left( C \right),\left( D \right)$$
4
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The reaction

AIEEE 2005 Chemistry - Basics of Organic Chemistry Question 170 English

is fastest when $$X$$ is
A
$$OCOR$$
B
$$O{C_2}{H_5}$$
C
$$N{H_2}$$
D
$$Cl$$
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