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The 'shanks system' of leaching (i.e., counter-current multiple contact leaching) is used for
In situ leaching is direct leaching of the ore deposits.
Which of the following conditions under pressure leaching can accelerate the leaching process?
In which leaching technique, stirring is used to help the dissolution process?
Which of the following is not a leaching technique?
What is the advantage of using percolation leaching technique?
Consider the following statements regarding Epitaxial Growth: 1. Thin layers are grown on a substrate wafer, this technique is known as epitaxial growth. 2. Physical vapour deposition is also called vapour phase epitaxy. 3. OMCVD is a technique to grow epitaxial layers from metalorganic compounds. 4. High through out and slow deposition rate are the disadvantages of the CVD technique. which of the above statements are correct ?
Which of the following statement relating to the sampling theory are correct? (i) The values of the statistical measures based on the sampled units are called values of statistic. (ii) In the simple random sampling technique, the element of the population and the unit of the sample are different. (iii) Snow- ball sampling technique is a probability based sampling technique. (iv) The 'law of statistical regularity' and the 'law of inertia of large numbers' are the main bases of the sample to become representative of the population. Choose the correct answer from the code given below:
Which of the following statements relating to the sampling theory are correct?
1. The values of the statistical measures based on the sampled units are called values of statistics.
2. In the simple random sampling technique, the element of the population and the unit of the sample are different.
3. Snow-ball sampling technique is a probability based sampling technique.
4. The 'law of statistical regularity' and the 'law of inertia of large numbers' are the main bases of the sample to become representative of the population.
Choose the correct answer:
The quantity of water beneficially used is the sum of the water used by the crops and the water used for leaching.