|
With reference to which classification has the statement “ranitidine is an antacid” been given?
|
|
0
|
2644
|
November 5, 2016
|
|
A monomer of a polymer upon ozonolysis gives one mole of methylglyoxal and two moles of formaldehyde
|
|
1
|
2597
|
November 5, 2016
|
|
Differentiate between rubbers and plastics on the basis of intermolecular forces
|
|
0
|
3411
|
November 5, 2016
|
|
Give an example of polyester used as a synthetic fibre
|
|
1
|
2974
|
November 5, 2016
|
|
How does the presence of double bonds in rubber molecules influence their structure and reactivity?
|
|
0
|
2968
|
November 5, 2016
|
|
Write the names of monomers of the following polymers:
|
|
1
|
3606
|
November 5, 2016
|
|
Which of the following polymers soften on heating and harden on cooling?
|
|
1
|
3615
|
November 5, 2016
|
|
A natural linear polymer of 2-methyl-1,3 butadiene becomes hard on treatment with sulphur
|
|
1
|
2716
|
November 5, 2016
|
|
Can nucleic acid, protein and starch be considered as step growth polymers?
|
|
0
|
2131
|
November 5, 2016
|
|
Why should the monomer used in addition through free radical pathway be very pure?
|
|
0
|
2027
|
November 5, 2016
|
|
How is the following resin intermediate prepared and which polymer is formed by this monomer unit?
|
|
1
|
2983
|
November 5, 2016
|
|
Why propene polymerises in isotactic,
|
|
1
|
810
|
November 5, 2016
|
|
Could a copolymer be formed by both addition polymerisation and condensation polymerisation?
|
|
1
|
2933
|
November 5, 2016
|
|
Arrange the following polymers in the increasing order of their intermolecular forces
|
|
1
|
1378
|
November 5, 2016
|
|
When RNA is hydrolysed,
|
|
1
|
1530
|
November 5, 2016
|
|
What is the difference between hormones and vitamins?
|
|
0
|
1879
|
November 5, 2016
|
|
Write the important structural and functional differences between DNA and RNA
|
|
0
|
6263
|
November 5, 2016
|
|
Why are vitamins A and C essential to us?Give their important sources
|
|
0
|
4470
|
November 5, 2016
|
|
The melting points and solubility of amino acids in water are generally higher than that of the corresponding halo acids. Explain
|
|
0
|
3227
|
November 5, 2016
|
|
Activation energy for the acid catalysed hydrolysis of sucrose is
|
|
1
|
1003
|
November 5, 2016
|
|
Protein found in a biological system with a unique three-dimensional structure
|
|
1
|
956
|
November 5, 2016
|
|
Amino acids may be acidic, alkaline or neutral. How does this happen?
|
|
0
|
5939
|
November 5, 2016
|
|
How do you explain the absence of aldehyde group in the pentaacetate of D-glucose?
|
|
0
|
15091
|
November 5, 2016
|
|
Enumerate the reaction of D-glucose which cannot be explained by the open chain structure
|
|
0
|
1915
|
November 5, 2016
|
|
How will you distinguish 1° and 2° hydroxyl groups present in glucose ? Explain with reactions
|
|
0
|
6170
|
November 5, 2016
|
|
Carbohydrates are essential for life in both plants and animals
|
|
1
|
1328
|
November 5, 2016
|
|
Monosaccharides contain carbonyl group hence are classified, as aldose or ketose
|
|
1
|
1682
|
November 5, 2016
|
|
Despite having an aldehyde group, glucose do not give 2,4-DNP test. Why?
|
|
0
|
12226
|
November 5, 2016
|
|
The Fischer projection of L-glucose is given
|
|
1
|
3671
|
November 5, 2016
|
|
Why does the compound (A) given below not form an oxime?
|
|
1
|
1179
|
November 5, 2016
|