TLS Online TPP Program

#Question id: 23527


Humans interfere with the natural phosphorus cycle by

#General Aptitude
  1. Causing erosion of land
  2. Adding phosphate fertilizers to agricultural soils
  3. Dumping sewage into rivers and lakes
  4. All of the above
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TLS Online TPP Program

#Question id: 73

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the Variation of Reaction Spontaneity (Sign of ΔG) given in Column I with the Signs of ΔH and ΔS given in column II.

COLUMN I

COLUMN II

 

 

 

  ΔH

ΔS

ΔG = ΔH – TΔS

1.

+

a. The reaction is both enthalpically and entropically opposed. It is nonspontaneous (endergonic) at all temperatures.

2.

 −

− 

b. The reaction is enthalpically opposed (endothermic) but entropically favored. It is spontaneous only at temperatures above T = ΔH/ΔS.

3.

+

+

c. The reaction is enthalpically favored but entropically opposed. It is spontaneous only at temperatures below T = ΔH/ΔS.

4.

+

d. The reaction is both enthalpically favored (exothermic) and entropically favored. It is spontaneous (exergonic) at all temperatures.

TLS Online TPP Program

#Question id: 68

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the following functional groups given in column I with their respective representatives given in column II.

COLUMN I               COLUMN II

1. Anhydride               a. RCOOR

2. Ether                       b. ROCOCH3

3. Acetyl                     c. ROR

4. Amido                     d. RCOOCOR

5. Ester                        e. RCONH2

TLS Online TPP Program

#Question id: 7289

#Unit 1. Molecules and their Interaction Relevant to Biology

The following scheme shows the flowering status of a plant species and the photoperiodism. Which of the following conclusions is most appropriate?

TLS Online TPP Program

#Question id: 15690

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the incorrect statement for the matrix 

TLS Online TPP Program

#Question id: 27394

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following has smallest size

TLS Online TPP Program

#Question id: 27393

#Unit 1. Molecules and their Interaction Relevant to Biology

In an exothermic reaction………a…….. and in endothermic reaction …………b………