Experiment Gone Wrong

Experiment and random experiment

While doing an experiment on bomb calorimeter, a student made the following statement : DeltaH = DeltaU + pDeltaV Since in the experiment DeltaV =0 hence DeltaH = DeltaU .Is the student right or wrong? Justify.

A student while verifying Ohm's law calculated the value of resistance of the resistor for each set of observation .However, the values of resistance were slightly different from the actual value . Is his experiment wrong ? Justify your answer.

0.2g of magnesium ribbon was placed in a crucible and heated with lid on until magnesium began to burn rapidly. At the end of experiment, 0.3g of a white powder was formed. Show that the result does not agree with the combustion equation. What might have gone wrong?

The weight to the wire in the young's modulus experiment is slowly increased. It is found that the wire started elongating of its own accord. Then on its stress-strain curve, the wire must have gone beyond its

Which of the following experiments have equally likely outcomes? Explain. A trial is made to answer a true-false question. The answer is right or wrong.

In an experiment with 15 observations on x, the following results were available Sigma x^(2)=2830 , Sigma x=170 On observation that was 20, was found to be wrong and was replaced by the correct value 30. Then, the corrected variance is

In an experiment with 10 observations on x the following results are available Sigmax^(2)=354 and Sigma x=58 . If one observation 8 that was found to be wrong and was replaced by the corrected value 10, then the corrected variance is

In an experiment with 10 observations on x, Sigma x=60 , Sigma x^(2)=1000 one observation that was 20 was found to be wrong and was replaced by the correct value 30 then the corrected variance is

In an experiment with 9 observation on x , the following results are available Sigmax^(2)=360 and Sigma x=34 . One observation that was 8, was found to be wrong and was replaced by the correct value 10, then the corrected variance is