# Reading multiple choice question PTE 15
Read the text and answer the multiple choice question by selecting the correct response. Only one response is correct.
1.) A solvent is a substance that dissolves a solute (a chemically distinct liquid, solid or gases), resulting in a solution. A solvent is usually a liquid but can also be a solid, a gas, or a supercritical fluid. The quantity of solute that can dissolve in a specific volume of solvent varies with temperature. Common uses for organic solvents are in dry cleaning, as paint thinners, as nail polish removers and glue solvents, in spot removers, in detergents, and in perfumes. Water is a solvent for polar molecules and the most common solvent used by living things; all the ions and proteins in a cell are dissolved in water within a cell. Solvents find various applications in chemical, pharmaceutical oil and gas industries, including in chemical syntheses and purification processes.
Question: Which of the following is not true of solvents according to the text?
a. Water is the most common solvent used by living things.
b. The most common solvent is paint thinner.
c. Solvents are useful in chemical, pharmaceutical, oil, and gas industries.
d. The effectiveness of a solvent varies with temperature.
2.) The upper class is the social class composed of those who are rich, well-born, powerful or a combination of those. they usually wield the greatest political power. In some countries, wealth alone insufficient to allow entry into the upper class. In others, only people who are born or marry into certain aristocratic bloodlines are considered members of the upper class, and those who gain great wealth through commercial activity are looked down upon by the aristocracy as nouveau riche.
And in the United Kingdom, for example, the upper classes are the aristocracy and royalty, with wealth playing a less important role in class status. Many aristocratic peerages or titles have ‘seats’ attached to them, with the holder of the title (e.g. Earl of Bristol) and his family being the custodians fo the house, but not the owners.
Question: Which of the following statements is true of the “upper class” according to the text?
a. The upper class is always the richest members of society.
b. The upper class usually have significant political power.
c. In all countries, those who gain great wealth through commercial wealth are looked down on.
d. In the United Kingdom, wealth plays the most important role in determining the upper class.
3.) Across the country, mom-and-pop markets are among the most endangered of small-town business, with competition from corporations and the hurdles of timeworn infrastructure pricing owners out. In Minnesota, 14 percent of nonmetropolitan groceries have closed since 2000. In Kanas, more than 20 percent of rural markets have disappeared in the past decade. Lowa lost half of its groceries between 1995 and 2005. The phenomenon is a “Crisis” that is turning America’s breadbaskets into food deserts, erasing a bedrock of local economies just as rural communities face a host of other problems. In New York or Los Angeles, the loss of a favorite establishment is an event to be mourned. But in small-town America, where the closest reliably market may be up to 50 miles away, the threat to local markets raises questions about the community’s very survival.
Question: Which of the following statements is not true, according to the text?
a. Many mom-and-pop markets in rural areas have been closing in the last few decades.
c. In New York and Los Angeles particularly, mom-and-pop markets have been closing in recent years.
d. About 1 in 5 nonmetropolitan markets in Kansas has closed in the last 10 years.
4.) In this study, we assessed the effect of flooding on growth and yield of different rice varieties submerged at a different time of their development stage. We compared three rice varieties, namely Prachinburi 2 (PCR 2), Kao Samer 1 (KSM 1) and Neang Guang 5 (NG 5), for their tolerance to 14 days of 50 cm depth submergence at 30, 60 and 90 Days After Germination (DAG).
At 30 DAG, the recovery ability of KSM1 was restricted, showing decreased shoot dry mass and grain yield, whereas photo assimilates transport of PCR 2 and NG 5 was altered, resulting in high leaf nitrogen (N) concentration but low grain yield. Our data revealed that rice varieties were more tolerant to submergence at 60 and 90 DAG. In opposition to KSM 1 and NG 5 grain yield, PCR 2 showed rapid recovery with a marked increase of shoot dry mass and grain yield.
Question: Which of the following is not true about the study described in the text above?
a. All three rice varieties flooded at 30 days after germination produced lower grain yields.
b. The main purpose of the study was to determine how growth and yield are affected by flooding at varied times in the growth cycle.
c. The grain yield of rice varieties flooded at 60 and 90 days after germination was less affected than when flooded at 30 days after germination.
d. Of the three rice varieties, PCR 2 showed the least grain yield increase when flooded at 60 and 90 days after germination.
Question 1:- b. The most common solvent is paint thinner.
Question 2: b. The upper class usually have significant political power.
Question 3:– c. In New York and Los Angeles particularly, mom-and-pop markets have been closing in recent years.
Question 4: d. Of the three rice varieties, PCR 2 showed the least grain yield increase when flooded at 60 and 90 days after germination.