Test

Statement-1:Aceteldehyde responds positively with all the test of carbonyl compounds like Tollen's Test. Fehling test, 2,4-DNP test, as well as Iodoform test. Statement-2:All aldehydes respond all the four test given in assertion.

A student scores the following marks in five tests 45, 54, 41, 57, 43. His score is not known for the sixth test. If the mean score is 48 in the six tests, then the standard deviation of the marks in six tests is

Which of the folloiwng statement/s about test cross is/are correct? I. Every test cross is a back cross, but not every back cross is a test cross. II. Every back cross is a test cross but not every test cross is a back cross. III. The ratio of a test cross is always 1:1. IV. A test cross can be considered as a type of reciprocal cross.

The diagram below shows two test-tubes A and B. Test-tube A contains a green water plant Test-tube B contains both a green water plant and a snail. Both test tubes are kept in sunlight Answer the questions that follow What is the purpose of keeping a snail in test-tube "B?

The diagram below shows two test-tubos A and B. Test-tube A contains a green water plant Test-tube B contains both a groen water plant and a snail. Both test tubes are kept n sunlight Answer the questions that follow Why does test-tube 'B' have more bubbles of oxygen