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aasmaan hai nila kyun (wavelength of visible light,
paani gila gila kyun (property of liquids)
gol kyon hai jameen (rotating bodies tend to attain shape with minimum vol)
silk mein hai narmi kyun (molecular structure),
aag mein hai garmi kyun (energy)
do aur do paanch kyun nahi (mathematical convention)

ped ho gaye kam kyun, (deforestation)
tin hai yeh mausam kyun (environmental reasons)
chaand do kyun nahi (big bang provided only one satellite to earth)
duniya mein hai jung kyun, (human nature)
behata laal rang kyun (blood is a liquid, liquids flow)
sarhadein hai kyun har kahin (geo-political reasons)

socha hai, yeh tumne kya kabhi
socha hai, ki hai yeh kya sabhi
socha hai, socha nahi toh socho abhi

behati kyun hay har nadi, (liquids flow, gravitational effect)
hoti kya hai roshani (form of energy)
barf girati hai kyun (gravitation)
log kyun hai ruthate (human nature)
taare kyun hai tutate (gravitational pull of larger heavenly bodies)
baadalon mein bijali hai kyun (electrostatic)

socha hai, yeh tumne kya kabhi
socha hai, ki hai yeh kya sabhi
socha hai, socha nahi toh socho abhi

sannata sunayi nahi deta, (absence of vibrations)
aur hawaaye dikhaayi nahi deti (nature of constituent molecules)

socha hai kya kabhi, hota hai yeh kyun

aasmaan hai nila kyun, paani gila gila kyun (ref. to explanation(s) given above)
gol kyon hai jameen
sukh mein hai narmi kyun, aag mein hai garmi kyun
do aur do paanch kyun nahi
ped ho gaye kam kyun, tin hai yeh mausam kyun
chaand do kyun nahi
duniya mein hai jung kyun, behata laal rang kyun
sarhadein hai kyun har kahin
(socha hai, yeh tumne kya kabhi
socha hai, ki hai yeh kya sabhi
socha hai, socha nahi toh socho abhi) - (2)