Everyone looked at the examiner anxiously, because next was the moment that decided their fate.

"Your answer is..."

At this point, the examiner paused deliberately, making everyone even more nervous.

Mo Shouchen had even begun to figure out how to unite other participants to fight against the examiner if Chen Ying suddenly changed his mind and only cared about saving his own life.

"Correct! She did jump down by herself." The examiner said the second half of the sentence slowly.

Don't gasp when you speak at this time, it will scare people to death!

Mo Shouchen complained in his heart and put down his right hand that was pressed on the black book, but he was still a little lucky that he finally didn't have to test the unstable "friendship" between him and Chen Ying.

Hearing that his answer was correct, Ren Changqiu breathed a long sigh of relief. Wang Guoqiang gave him a thumbs up and praised: "Thanks to you this time, otherwise we would have to be blind."

Ren Changqiu smiled and said: "It would be great if I can help everyone. I have been weak and sick since I was a child and cannot go out to play. When I have nothing to do, I like to read physics magazines. I didn't expect that the knowledge I read in books can be used, so I want to talk more

There are still benefits to reading!”

After the physics exam, the examiner announced a break, but this time he did not allow the participants to touch the broken body.

Since there were no usable corpses, there was no way to lure away the ghost students in the corridor, so everyone could only stay in the classroom.

Since they are not allowed to be disposed of, it means that this body must be related to the next exam.

Just when everyone was thinking about which subject the next exam would be, Mo Shouchen began to look at "Jue Huang" sitting in the last row.

During the break after the last exam, there were a total of three people staying in the classroom.

Why are the other two missing, and one of them was smashed into a meat pie, but nothing happened to "Jue Huang".

As the script progresses, in Mo Shouchen's mind, the identity of "Jue Huang" keeps switching between the participants and the NPC.

He was said to be an NPC in the script, but he entered the classroom after Jiao Ningmeng, and he got up and took pills during the math test, which meant that he also had to take part in the test.

He is said to be a participant, but in the eyes of the examiner, he seems to be transparent. Nothing bad can happen to him. Even his own relatives cannot take care of him like this!

So Mo Shouchen thought it was better to be cautious, so as not to be plotted by this guy who didn't know whether he was a human or a ghost at the critical moment.

He turned his head and found that Chen Ying was also looking at "Jue Huang", with cold eyes and raised corners of his mouth, as if he was planning something.

Seeing Chen Ying's expression, Mo Shouchen couldn't help but shudder. Is this kid planning another conspiracy?

The bell rang again, and after it calmed down, the examiner put down his book, then raised his head and announced: "The subject we are going to test this time is...chemistry. Because the questions in this test are dangerous, we have to change to another place.

."

After speaking, he opened the book he had been reading, and five pages floated out from it. These five pages began to extend infinitely, gradually covering the ceiling and surrounding walls of the classroom.

Then a dazzling light appeared on the paper, making the people in the classroom unable to open their eyes.

After their vision slowly recovered, they found themselves in a chemical laboratory with a large number of instruments.

Looking at the dazzling array of experimental instruments around him, Mo Shouchen couldn't help but sigh: I had only heard that there was a golden room in the book, but I didn't expect that there was a chemistry room in the book!

He looked back and found that "Jue Huang" was also in the laboratory, and the boy's desk and chair came in with him, so even if he changed the place, it would not affect his sleep at all.

The chemistry laboratory is larger than the previous classroom, and the examiner still stands behind the podium at the front of the laboratory.

He continued: "The topic of this chemistry exam is 'corrosion'. There are various chemical reagents and containers in this laboratory. You need to corrode the body on the ground."

"However, considering that the exam time is only one hour, I will lower the difficulty for you. You can choose a part from the head, body, upper limbs and lower limbs for corrosion."

"At the end of the exam, if the corrosion level reaches more than 80%, you will pass the exam. Otherwise, everyone will be eliminated. Now the exam begins, which part do you want to choose?"

Looking at the deformed body on the ground, everyone couldn't bear it, but after all, everyone's life was at stake, so they had no choice but to be cruel.

Eleven people gathered together to study it. Although the head was the smallest, it had more bones and was less susceptible to corrosion.

Moreover, just thinking about putting a head into a container and pouring corrosive liquid into it was terrifying, so they unanimously decided to choose the upper limbs.

After hearing their choices, the examiner flipped his wrist, and two pieces of chalk popped out together, hitting the shoulders on both sides of the corpse directly, knocking off both arms.

Wang Guoqiang found a container of suitable size, then walked to the body, bowed to the body first, then put his two arms into the container and took it to the test bench.

Others began to look for corrosive solutions and protective equipment in the laboratory.

Soon, they found hydrochloric acid, sulfuric acid, nitric acid, hydrochloric acid, hydrobromic acid, hydroiodic acid, perchloric acid and hydrofluoric acid, as well as several sets of protective clothing, protective masks and gas masks.

Several male participants put on protective clothing and then carried the found corrosive solution to the side of the test bench.

Mo Shouchen said to Ren Changqiu: "There are so many solutions and we don't have time to try them one by one. Do you know which solution is the most corrosive?"

Ren Changqiu shook his head in embarrassment and said, "Sorry, I'm only interested in physics and haven't paid much attention to chemistry, but I remember that aqua regia seems to be particularly corrosive."

Mo Shouchen glanced at the labels on various containers, but did not find aqua regia.

He vaguely remembered that in high school, the chemistry teacher seemed to have mentioned the preparation method of aqua regia, but at that time he could not even remember the knowledge in the textbook, let alone the extracurricular knowledge taught by the teacher.

Only now did he truly understand the meaning of the saying "When a book is put to use, it will be less useful."

At this time, Jiao Ningmeng said: "I remember that the preparation method of aqua regia seems to be to combine concentrated hydrochloric acid and concentrated nitric acid in a ratio of three to one. Gas will be produced during preparation, so be sure to wear a protective mask and a gas mask.

."

"Okay, let's hurry up!"

As he spoke, Mo Shouchen first asked someone to find a container that was convenient for pouring, and then poured concentrated hydrochloric acid and concentrated nitric acid into the container one after another according to the proportions Jiao Ningmeng said.

When the solution turns yellow, the aqua regia is prepared successfully.

Mo Shouchen was about to ask someone to pour the prepared aqua regia into the container on his arm, but he found Chen Ying fiddling with something alone on the test bench near the back.

Just when he was wondering what Chen Ying was doing, he heard a "bang" and a burst of smoke rose from the instrument in front of Chen Ying.
Chapter completed!