Pick out the correct combination about the role of various additives used in polymers ?

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Boiling point of water gets lowered at high altitudes (e.g., hills), because ___________________?

A. Temperature is low B. Atmospheric pressure is low C. Atmospheric pressure is high D. None of these...

The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong _____________________?

A. Base and strong acid B. Base and weak acid C. Acid and weak base D. None of these...

Laser is a device to produce___________________?

A. Gamma rays B. Microwaves C. A beam of white light D. A beam of coherent light...

For a spontaneous natural process at constant temperature and pressure, the free energy of the system always____________________?

A. Increases B. Decreases C. Remain constant D. Increases to a maximum before decreasing...

Angular displacement can be measured suitably by a______________________?

A. Shaft encoder B. Linear variable differential transducer (LVDT) C. Stroboscope D. Tachometer...