this is test

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?

What is sure test of magnetism?

Viability of the seed is tested with

Why is Beilstein's test not regarded as a reliable test for the detection of a halogen in an organic compound?

Yellow precipitate obtained during the test halogen by lassaign's test is due to the formation of

Which substance is tested in case of toxicity/safety testing using transgenic animals?

Which of the following organic compounds answers to both iodoform test and Fehling's test?

A student's mean score on 5 tests was 84. The student's mean score on the first 4 of these tests was 87. What was the student's score on the fifth of these tests ?

In a series of tests, A appeared for 8 tests Each test was marked out of 30 and averages 25. However, while checking his files, A could only find 7 of the 8 tests. For these he scored 29 26, 18 ,20, 27, 24 and 29. Determine how many marks he scored for the eighth test.

PSA is a test used to detect