Labmonk quiz, NET Life Science,
#1. A solid cube of side L floats on water with 20% of its volume under water. Cubes identical to it are piled one-by-one on it. Assume that the cubes do not slip or topple, and the contact between their surfaces is perfect. How many cubes are required to submerge one cube completely?
#2. In which form of DNA, the number of base pairs per helical turn is 10.5?
#3. A cupboard is filled with a large number of balls of 6 different colours. You already have one ball of each colour. If you are blind-folded, how many balls do you need to draw to be sure of having 3 colour matched pairs of balls?
#4. When a magnet is made to fall free in air, it falls with an acceleration of 9.8ms–2. But when it is made to fall through a long aluminium cylinder, its acceleration decreases, because
#5. A bell is rung before giving food to a dog. After doing this continuously for 10 days, which of the following is most likely to happen?
#6. Restriction endonuclease cleaves DNA molecules at specific ‘recognition sites’. One such enzyme has four recognition sites on a circular DNA molecule. After complete digestion how many fragments would be produced upon reaction with the enzyme?
#7. Inner planets of the solar system are rocky, whereas outer planets are gaseous. One of the reasons for this is that
#8. On exposure to desiccation, which of the following bacteria are least likely to experience rapid water loss?
#9. An overweight person runs 4 km everyday as an exercise. After losing 20% of his body weight, if he has to run the same distance in the same time, the energy expenditure would be
#10. During a total solar eclipse occurring at noon, it becomes dark enough for a few minutes for stars to become visible. The stars that are seen are those which will be seen from the same location
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