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Assertion (A): Dry ice seeding does not depend on any lattice match with ice.
Reason (R): It works by cooling the air below the temperature of homogeneous freezing.

  • A.A is true but R is false
  • B.A is false but R is true
  • C.Both A and R are true, and R is the correct explanation of A
  • D.Both A and R are true, but R is not the correct explanation of A

Answer: C

Both are true and the reason gives the distinct mechanism, and this is why it leaves no chemical residue. Its disadvantage is that it must be released directly into the supercooled part of the cloud. Ground release is therefore not an option for it.

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