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NCERT Textbook: Some Basic Principles & Techniques | Chemistry Class 11 - NEET PDF Download

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FAQs on NCERT Textbook: Some Basic Principles & Techniques - Chemistry Class 11 - NEET

1. What are some basic principles discussed in the NCERT textbook on techniques?
Ans. The NCERT textbook on techniques discusses several basic principles such as accuracy, precision, reliability, and validity. These principles are important in ensuring that scientific experiments are conducted properly and produce reliable results.
2. What is the importance of accuracy in scientific experiments?
Ans. Accuracy is crucial in scientific experiments as it indicates how close the measured value is to the true value. It ensures that the results obtained are reliable and can be used to draw valid conclusions.
3. How can precision be improved in scientific measurements?
Ans. Precision in scientific measurements can be improved by using appropriate measuring instruments, taking multiple readings, and ensuring consistency in the experimental conditions. These steps help reduce random errors and increase the reliability of the measurements.
4. What is the difference between reliability and validity in scientific experiments?
Ans. Reliability refers to the consistency and repeatability of the measurements or results obtained in an experiment. Validity, on the other hand, refers to the extent to which an experiment or measurement actually measures what it is intended to measure. While reliability ensures consistent results, validity ensures that the results are meaningful and accurate.
5. How can one ensure the validity of an experimental procedure?
Ans. To ensure the validity of an experimental procedure, it is important to carefully design the experiment, use appropriate control groups, minimize confounding variables, and ensure that the measurements or observations are relevant to the research question. These steps help ensure that the experiment accurately measures what it intends to measure and produces valid results.
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