Question 10: VerticalSelect the options that would NOT be suitable for the following unedited sentence:The effect of pH on the adsorption in Cr(III) on natural bentonite was evaluated.“effect” should be revised to “affect”“of pH” should be revised to “by pH”“on the” should be revised to “from the”“in Cr(III)” should be revised to “of Cr(III)”

Question 20: VerticalSelect all options that provide suitable and essential revisions for the following unedited sentence:Two different techniques were expressed as nondestructive tools to study the optical and electrical properties of the monolayer graphene sample installed on a fused quartz substrate.Revise “expressed” to “demonstrated”Revise “study” to “learn”Revise “installed” to “deposited”Revise “electrical” to “electric”

Which of the following statements is true with respect to the extent of physisorption?a.Increases with increase in temperatureb.Decreases with increase in temperaturec.Decreases with increase in surface aread.Decreases with increase in the strength of Van der Waals forces

Question 1(Multiple Choice Worth 3 points)(06.04 MC)Which of the following problems are environmental indicators of acid deposition?Decreased pH levels in lakes and riversDecreased concentration of aluminum in the soilChanges in development of indicator organisms of an ecosystem II only III only I and III I and II

SECTION 4Questions 31-32 | Choose the correct letter, A, B or C.What does the speaker focus on in this talk?(A) the causes of air and water pollution(B) the financial cost of too much pollution(C) a way to reduce the amount of pollutionHow does the speaker define “phytoremediation”?(A) growing food crops in polluted regions(B) the use of plants to eliminate pollution(C) reducing the pollution level in factoriesQuestions 33–40 | Complete the notes below.Write ONE WORD OR A NUMBER ONLY for each answer.Process: • plants are grown in water or 33- ………………………… that is polluted • remove pollution from the 34- ………………………… at the same time as they take in waterExample: • sunflower 35- ………………………… can either be eaten or used as a source of oil • also good at removing a pollutant called arsenic (a kind of 36- …………………………)Benefits: • using plants costs less than other 37- ………………………… of cleaning up pollution • example: alpine pennycress to remove cadmium - $ 38- ………………………… per acre (cost of traditional approach would be closer to $1,000,000)Drawbacks: • can take a long time compared with other approaches • example: alpine pennycress took up to 39- ………………………… years to remove cadmium • if ground is badly polluted, plants may not grow at allOverall: • phytoremediation is a good option and scientists want to make it more effective • Swedish scientists found floating hook moss can remove arsenic from water - up to 40- ………………………… percent of the pollutant in just one hour

Which of the following statements about alternative treatments (two ways of accounting) for adjusting entries is correct?