Which one of the following statements regarding the standard cosmological model

Question

Which one of the following statements regarding the standard cosmological model is false? a) The first distinguishable particles in existence after the Big Bang were quarks and leptons. b) At 10–43 s after the Big Bang, the gravitational force was distinguishable from the other fundamental forces.c) The Grand Unified Theory describes the universe immediately before and shortly after the Big Bang. d) About 0.5 million years after the Big Bang, hydrogen and helium atoms began to form. Shortly after the Big Bang, all of the fundamental forces behaved as a single force.

Explanation / Answer

The first distinguishable particles in existence after the Big Bang were quarks and leptons this is false as any theory till now works only upto some time after bigbang, not before it.

The Grand Unified Theory describes the universe immediately before and shortly after the Big Bang is false as anti quarks and anti leptons to emerged with them

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