Practice Questions

TLS Online TPP Program

#Question id: 20102

The enthalpy change for a given reaction at 298 K is – x J mol^–1 (x being positive). If the reaction occurs spontaneously at 298 K, the entropy change at that temperature

#XL - P Chemistry

can be negative but numerically larger than x/298
can be negative but numerically smaller than x/298
cannot be negative
cannot be positive

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TLS Online TPP Program

#Question id: 10574

#XL - T Zoology

Which of the following statements about the evolution of life histories is correct?

TLS Online TPP Program

#Question id: 9272

#XL - R Botany

The quantum yield of photosynthesis falls off drastically for far-red light of wavelengths greater than 680 nm, indicating that far-red light alone is inefficient in driving

photosynthesis, this effect is called

TLS Online TPP Program

#Question id: 15253

#XL - S Microbiology

The water activity in foods that have high levels of salt or sugar is

TLS Online TPP Program

#Question id: 419

#XL - R Botany

Biological oxidation-reduction reactions never involve:

TLS Online TPP Program

#Question id: 16844

#General Aptitude