Levitt performed experiments .He observed that auxin treated cells were able to water even when kept in hypertonic solution .Which explans this observation best

Which of the following process take place when a plant cell is kept ina hypertonic solution.

In order to sat up standard target of performance for workers, it was necessary for Shiv Ltd. To fix standard time for workers to performs a particular job. For this Mr. Ganesh, the Production Manager of the company observed the workers when they were performing the job. He used a stopwatch in hand and noted down the averge time taken by workers for completion of the job. He repeated the same observation for 100 times and then calculated average time for the performance of the job. This was fixed as the standard time on the basis of which efficient and inefficient workers were distinguished. Identify the technique of scientific management followed by Mr. Ganesh.

Read the given passage and answer the questions. Suhana wanted her house to be white washed, She bought 10 kg of quicklime from the market and dissolved it in 30 L of water. On adding lime to water, she observed that the water started boiling even when it was not being heated. Which of the following statements is correct about the above reaction based on your observations? (i) It is an endothermic reaction. (ii) It is an exothermic reaction (iii) The pH of the resulting solution will be more than seven. (iv) The pH of the resulting solution will be less than seven.

While performing an experiment, a student observes that when he heats some green crystals in a boiling tube, the colour of the crystals changes to brown and a gas evolves which smells like burning sulphur . Interpret the observations and results.

Figure below shows a version of Young's Experiment performed by directing a beam of electrons on double slit. The screen reveals a pattern of bright and dark fringes similar to an interference as pattern produced when a beam of light is used. Which property of electron is revealed in this observation?

In the experiment of observing a stone kept at the bottom of a water beaker through a convex lens which is also kept in water. What are the conclusions you have arrived ?