Question

U SUTUUDIIS

Precautions: (1) Chemical solutions should be freshly prepared.
(ii) Chemical reagents should be handled with care.
(iii) Test-tubes, beaker, funnel , China dish, etc. should be clean and dry.
(iv) For heating purpose, always hard glass test-tubes should be used.​

Answer 1

Answer:

all the precautions are correct