Match List I correctly with List II and select your answer using the codes given below:
Answer : B. a-4 ,b-1 ,c-2 ,d-3
Instrument used to measure earthquake shocks
Answer : D. seismometer
The purity of milk is measured with
Answer : B. Lactometer
Photometer are instruments used to measure
Answer : C. intensity comparison between different light sources
Which instrument can be used to determine the thickness of a piece of paper?
Answer : B. Screw gauge
Which one of the following can be used to confirm whether drinking water contains a gamma emitting isotope or not?
Answer : C. Scintillation Counter