Solutions were made that contained various parts per million (PPM) of 2-butoxyethanol, and 15 mL of each of these diluted solutions was mixed with 150 g of wood chips to test for toxicity to termites. Twenty mature termites were added to the wood chips, and the number surviving after 24 hours was determined and recorded. The given graph presents the results.
At which dose does 50% of the termite population survive?

15 PPM

No worries! We‘ve got your back. Try BYJU‘S free classes today!

20 PPM

No worries! We‘ve got your back. Try BYJU‘S free classes today!

25 PPM

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

30 PPM

No worries! We‘ve got your back. Try BYJU‘S free classes today!

35 PPM

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B 25 PPM
The experiment started with 20 termites and graph shows that 25 PPM solution left 10 survivor termites. Thus, the correct answer is option C.

Suggest Corrections

Similar questions

Q. 1000 ml of tap water containing

C a (H C O_{3})_{2}

was titrated with

\frac{N}{50}

HCl with methyl orange as indicator. If 300 ml of HCl were required, calculate temporary hardness as parts of

C a C O_{3} p e r 10^{6}

parts of water

Q. Units of parts per million (ppm) or parts per billion (ppm) are often used to describe the concentrations of solute in very dilute solutions. The units are defined as the number of grams of solute per million or billion grams of solvent. The Bay of Bengal has 1.89 ppm of lithium ions. The molality of

L i^{+}

in water is: (atomic number of

L i = 7

Q. The content of the carbon dioxide in the air is 500 ppm(parts per million). What is the content of Oxygen in the air ?

Q. A sample of water contained 30 ppm of

M g S O_{4}

. Its hardness is

In a titration of 100 ml of water, 12 ml of saturated soap solution were required to produce good lather.What will be the degree of hardness of the sample?[1ml=0.001g of ${C a C O}_{3}$ ]

Join BYJU'S Learning Program

The correct option is B 25 PPMThe experiment started with 20 termites and graph shows that 25 PPM solution left 10 survivor termites. Thus, the correct answer is option C.

The correct option is B 25 PPM
The experiment started with 20 termites and graph shows that 25 PPM solution left 10 survivor termites. Thus, the correct answer is option C.