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10th Class Science Sample Paper Sample Paper - 3 Term - 1

  • question_answer
      Four students. were asked by theirteacher to arrange the set ups I-IV asgiven below and identify the gasevolved in each case, if any. After observations, they arrived at the following inferences and recorded these in the form of a table given below.
    Student I II III IV
    A Hydrogen No gas Carbon dioxide Hydrogen
    B Carbon dioxide Hydrogen No gas Carbon dioxide
    C Carbon dioxide Hydrogen Hydrogen No gas
    D No gas Carbon dioxide Carbon dioxide Hydrogen
    Which student has given the correct observation and inferences? Give chemical reactions also.

    Answer:

      Student C has given the correct observation and inferences.                                                                                       (1) No reaction and no gas                                                                                                                  (1)


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