Related Questions

The most important chemical catalyst on the planet is chlorophyll, _____ carbon dioxide and water react to form chlorophyll, . [Fill n the blank with appropriate one]
A whose presence
B which is present
C presenting
D in the presence of which
Which of the following is not a naturally occurring nuclear fuel?
A Uranium-238
B Thorium-233
C Plutonium-239
D None of the mentioned
Which one is heaviest naturally occurring element of the periodic element?
A Iron
B Thorium
C Rhodium
D Uranium
In natural uranium, the constituents of three naturally occurring isotopes are
A U234 = 0.006%, U235 = 0.712% and U238 = 99.282%
B U234 = 0.712%, U235 = 0.006% and U238 = 99.282%
C U234 = 99.282%, U235 = 0.006% and U238 = 0.712%
D U234 = 0.006%, U235 = 99.282% and U238 = 0.712%
Total number of naturally occurring elements
A 62
B 92
C 98
D 110
The heaviest naturally occurring element is:
A Mercury
B Polonium
C Thorium
D Uranium
Which one of the following elements is essential for the formation of chlorophyll in green plants?
A Calcium
B Iron
C Magnesium
D Potassium
Which among the following is found in chlorophyll ?
A Ca2+
B Mg2+
C Fe2+
D Al3+
In which of the following chlorophyll does not exist?
A Algae
B Fungi
C Bryophytes
D Pteridophytes
__________ is a special constituent of chlorophyll without which photosynthesis is not possible.
A Calcium
B Nitrogen
C Phosphorous
D Hydrogen

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