(Il) | Reason : It measure soil moisture accurately
A:-Assertion is true and Il is the correct reason
B:-Assertion is true but Il is not the correct reason
C:-Assertion is not true but reason is true
D:-Both Assertion and Reason are false
Correct Answer:- Option-A
Question73:-Which of the following statements about Anabolic Steroids is wrong?
A:-Anabolic steroids help build muscle tissue and increase body mass
B:-Anabolic steroids are a chemical derivative of testosterone
C:-Anabolic steroids are corticosteroids
D:-Use of these steroids is illegal and banned by most sports organizations
Correct Answer:- Option-C

Question74:-Which of the following shows peak at m/z = 58 due to Mc Lafferty
Rearrangement?

A:-2-pentanone
B:-3-pentanone
C:-3-methyl-2-butanone
D:-None of above

Correct Answer:- Option-A

Question75:-The half-life of Ra-226 is 1600 years. Calculate the time for its
decomposition into 6.25% of initial amount?

A:-3200 years
B:-6400 years
C:-4800 years
D:-8000 years
Correct Answer:- Option-B
Question76:-Which of the following statements is wrong?

A:-TOCSY spectrum divides the proton signals into groups so that overlapping
multiplets can be resolved

B:-TOCSY is used for studying structure of macromolecules
C:-Intensity of the peaks is related to number of bonds connecting the protons

D:-If we want to determine which proton is coupled which other proton COSY is
better than TOCSY

Correct Answer:- Option-C

Question77:-In forensic analysis the species origin of blood is determined by
(|) Precipitin tube method

(Il) Double disc diffusion method

(Ill) Crossover Electrophoresis