II Test your IQ level II new maths puzzle which test you

Star Industries is conducting the following tests to select the most suitable candidate out of the various applicants. Identify the selection test highlighted in each case. (i) This test is conducted to determine actual skills possessed by the condidate. (ii) This test aims to measure the IQ level of the applicant.

Two test tubes contain two colourless liquids ethanol and ethanoic acid. Explain by writing reaction which chemical test you would perform to tell which substance is present in which test tube.

A student appears for test I and II.The student is successful if he passes either in test I or test II.The probability of the student passing in test I and II are p and (1)/(3) respectively.If the probability that the student is successful is (1)/(2) then find the value of p.

If you are advised to get a Widal test done for yourself, which disease is your doctor suspecting?

In a class, 70 students wrote two tests wiz, test-I and test-II 50% of the students failed in test I and 40% of the students in test -II. How many students passed in both tests?