[nilesh]

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Hi buddy my one of the friend going to appear in TIFR entrance exam and for its preparation looking for model question paper so would you plz provide me same here ??

[Vishal Kotkar]

As you are looking for TIFR entrance exam model paper , so on your demand I am providing same for you :

Section A: General
1. In 1828, Wohler synthesized urea in the laboratory. This was significant because it
demonstrated that:
a. biomolecules are carbon compounds
b. urea would be an ideal fertilizer
c. organic compounds can be synthesized without living organisms
d. life cannot generate spontaneously from non-living matter
2. The use of DNA evidence to find crime suspects is not perfectly conclusive
because of
a. degradation of the sample
b. contamination by other individuals’ DNA
c. insufficient data to match one individual uniquely
d. all of the above
3. I hold a bottle vertically, looking down at its cap. To open the bottle I rotate the cap
clockwise. This means the thread of the screw on which the cap moves is:
a. right-handed
b. left-handed
c. symmetric
d. this can’t be determined from the given information
4. The relative percentage of oxygen in the air remains constant at 21%, from sea
level to the peak of Mt. Everest. Why then do humans suffer from altitude sickness?
a. Due to the ozone layer.
b. Due to the increased percentage of nitrogen in the air.
c. Due to the reduced air pressure at higher altitudes.
d. Due to the increased exposure to ultra-violet light.
5. In radiocarbon dating, scientists base their estimates of the age of a sample on the
measured counts per minute per gram of carbon (cpm/g-C). The half-life of carbon-14
is 5700 years. A relic is found to give an activity of 12 cpm/g-C. If living trees give a
count of 16 cpm/g-C, the approximate age of the relic is:
a. 2300 years
b. 5300 years
c. 6300 years
d. It depends on the total amount of carbon in the relic

TIFR entrance exam model paper