________________ is a special constituent of chlorophyll without which photosynthesis is not possible ?

Related Mcqs:

_____________________ of austenite decreases the hardenability in steel ?

A. Fine grains B. Coarse grains C. Homogeneity D. Dissolved elements (except cobalt)...

Adhesives__________________?

A. Can’t be used in the form of pressure sensitive tapes B. Can’t join two dissimilar metals C. Cure instantaneously after application on a surface D. None of these...

The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : Cp of copper is 23 J K-1mole-1) ?

A. 2300 J B. 4600 J C. 230 J D. 2.3 × 106 J...

Joule-Thomson co-efficient is the ratio of________________?

A. Pressure change to temperature change occuring during adiabatic compression of a gas B. Pressure change to temperature change occuring during adiabatic throttling of a gas C. Temperature change to pressure change occuring during adiabatic compression of a gas D. Temperature change to pressure change occuring during adiabatic throttling of a gas...

Solute atoms which cause yield point phenomenon in mild steel are/is_________________?

A. Aluminium B. Boron C. Carbon D. Nitrogen...