Related Questions

A test tube contains 9ml distilled water. 1g of soil is added to that test tube and the soil is allowed to settle down. Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. The process is repeated several times until the requirement is met. For this dilution, it may be said that the solution was diluted _______
In a BOD test, 1.0 ml of raw sewage was diluted to 100 ml and the dissolved oxygen concentration of diluted sample at the beginning was 6 ppm and it was 4 ppm at the end of 5 day incubation at 20°C. The BOD of raw sewage will be
3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 day-incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is
Which is the longer: P is equal to Q, R is shorter than P, S is longer than R. T is longer than Q, is longer then S.
Threshold odour number testing is preferred in hot water.
The range for threshold odour number is __________
When we cut an onion, the vegetable emits an odour and our eyes tear up. Which of the following compounds is responsible for the tears and odour resulting from freshly cut onions?
What is the odour threshold limit of H2S gas?
The pH value of a sample of multiple-distilled water is
এক রক্তদান শিবিরে আপনি যদি 250ml রক্তদান করেন তাহলে আপনার শরীরের মোট রক্তের শতকরা কত ভাগ রক্ত নেয়া হবে?