IGCSE CHEM MCQ PAPER 22 FEB 2026

本站添加: 2026-06-07

[00:02:55]I am finished. It is going on, Salam Walekum Huzaifa son, if you can hear me then come to the YouTube link that is coming to you, sit here, sit in the comments for a while, okay the link is working everywhere, I am not feeling the headache. Okay son, everyone can hear your voice. Greetings to you too.

[00:04:32]Why is it not on ZM? I don't know what the issue with ZM is right now. Well, I had to do this on YouTube only. But some of the links that you guys get from ZM were supposed to come.

[00:04:43]But when he connected ZM and YouTube, there was some clash between them. So I won't be able to see the chat at any place there. So all of you take the class here today.

[00:04:58]IGCSE Feb March ka paper karna hai 2026 chota sa paper hai bahut easy paper hai lekin yeh important hai O level and IGCSE for both of you guys so you all will take this paper ko paper beta yeh MCQ paper hai.

[00:05:17]Paper 2 of IGCSE is an MCQ paper.

[00:05:19]Well, IGCSE has two variants. If you do not do your first paper one, it is useless. That is actually the core version.

[00:05:29]All of you IGCSE students give the extended version. And the syllabus of those who have O level and the syllabus of extended IGCS is same. Well, why is this paper important? Now let a few more students join and then I will start the conversation again. Its grade threshold son, its marking has not come yet.

[00:05:47]Where will I tell you the grade threshold?

[00:05:49]Its grade threshold has not been reached yet.

[00:05:53]Well, yesterday I had sent some papers to you people whose grade threshold was there, so you must do those papers.

[00:06:01]He was of the level of IGCS, Insha Allah he will be sent to you by the end.

[00:06:06][sound of clearing throat] Yes, the core's max crits are C. This is the extended version. It contains a star.

[00:06:21]Let a few more kids come then we will start the class.

[00:06:31]Rest of you guys, tell me how are you all? Now the exams are about to end.

[00:06:35]Your holidays are coming. Then you will enjoy it.

[00:06:52]Yes, the class will probably end soon [sound of clearing throat] it will be over soon, it is very easy, I have not seen it, I will watch it along with it for you, but I know it is easy for you, Insha Allah it will be easy. Do n't take tension.

[00:08:31]Cam 11 what happened to the paper you guys have run away I am reading the chats son I am definitely reading your Khan sister let's go brother let's begin with the paper let's go brother Bismillah. The Paper is Fab March 2026 and Most Recent Paper.

[00:09:38]Well, why is this paper important?

[00:09:40]Both are important for IGCSC.

[00:09:42]But why is it important for O level? See, this is the first paper of every series of Cambridge.

[00:09:48]And usually we have noticed that when Cambridge makes its series papers, it is made on a particular pattern.

[00:09:55]Like all your papers of 2020, whether it was of May-June or October-November or Feb-March, IGC SC, they usefully choose some topics and are making questions from those topics.

[00:10:08]So, for one year, they definitely cover those topics in all the papers and all the series. You must be making questions related to that. This is a rough idea. I'm not saying that's exactly what happens.

[00:10:22]But mostly what we have observed is that in particular year they give a questions related in all the series. So that's the point of doing this paper both for O level and IGCS. That's why I was telling you that this is important for O level students also.

[00:10:40]Okay, keep your chat relevant, otherwise you know that Haseeb Bhai is very active with us. He keeps sending messages continuously. So you can talk about whatever it is later after class.

[00:10:52]Extra, if you don't understand any question right now, please ask it. Okay, question number one says a sample of helium gas is placed in a free moving gas syringe. The temperature of the helium is increased. The pressure of the helium does not change.

[00:11:13]Oh ok, the temperature is increasing but the pressure is not increasing, its volume must be increasing, if I increase the temperature and simultaneously the volume keeps increasing, then when the volume increases, the pressure decreases.

[00:11:28]Pressure is inversely proportional to volume. So if the pressure is not increasing by increasing the temperature, then it means that the volume of your gas range may be increasing.

[00:11:37]Now you have to answer keeping that in mind.

[00:11:40]The volume of the helium gas decreases.

[00:11:45]See, if it decreases then option C becomes incorrect. Option D says the volume of helium gas increases. This is true. And the helium atoms get further apart. So the answer must be D. Right? There is lag. There is lag. Lag lag lag lag Is the lag happening in the voice or in the screen? Please confirm this to me once. There is lag in the voice I can fix yours right now There is lag in the voice It is happening only on the screen as well Sure voice There is lag only in the voice Come on tell me now it is fine where have I kept the water bottle? I'm out. Now it is correct.

[00:13:10]Hasan did not send any relevant message. Haseeb Bhai, don't delete Hasan's messages. It's fine now. Has everyone understood question number one? Let's come to question number two.

[00:13:20]In question number two it is saying do not delete Haseeb Hasan's messages. He is saying that I have not sent the Revent message yet.

[00:13:38]Well brother question number two is saying an experiment is set up as shown cotton [nasal sound] wool is soaked in concentrated hydrochloric acid at one end and ammonia it is present at the other end. You know that both of the gases will diffuse. If a cotton wool contains hydrochloric acid, the hydrochloric acid will eventually evaporate and the molecules of HCL will move from the left hand side to the right hand side and the molecules of ammonia will diffuse from the right hand side to the left hand side. Now you know very well that HCL is an acidic gas. is an acid and ammonia is a basic gas. Well, what is in the middle is litmus paper. Dam Universal Indicator Paper. Well, what will happen now? will be. When HCL reaches it, it will turn red and when ammonia reaches it, it will turn blue.

[00:14:26]Well, this is kept in the centre. Further it says that the concentrated hydrochloric acid gives off hydrogen chloride gas which dissolves [nasal sound] in water to form an acid. The concentrated ammonia gives off ammonia gas which dissolves in water to form an alkaline.

[00:14:40]Which Row Describes and Explains the First Change in the Universal Indicator Paper. Look brother, the lighter gas you have will reach your litmus paper or indicator paper first. Which of the following is the lighter gas? How will we know that?

[00:14:54]You will find the molecular masses of both gases. The molecular mass of ammonia is 14 + 3, which is 17 grams. And the molecular mass of HCL is 36.5 grams. Right? So the ammonia gas that travels should be traveling faster because it is lighter. So which gas will reach first? Ammonia gas will reach first. When ammonia gas reaches, the color of your indicator will turn blue. This is obviously litmus paper. He has not written it, it is a litmus paper. But you have read only one indicator which is in the form of paper. So whatever is your color of universal indicator paper, it must turn blue. Because ammonia gas will reach litmus paper first. Because it is lighter. It must be diffusing faster. And what is the reason?

[00:15:40]Molecules of ammonia move more quickly than the molecules of hydrogen chloride.

[00:15:44]So option A is correct. It's very simple.

[00:15:46]Right? Option C says molecules of hydrogen chloride move more quickly. They cannot move more quickly as compared to ammonia because they are heavier than ammonia.

[00:15:57]okay brother? Now question number three says X3 X2 positive ion of a group two element X. Well, as of now, in the recent papers, this type of question has become a favourite question of the examiner. Such questions are given in O level also.

[00:16:09]He has given such questions in IGCS also. But this is a very simple question. You must not do this wrong.

[00:16:15]Ok? It's saying x two ion is a is an ion of group two element [nasal sound] X what what has the highest value in the ion? Now look, this could be any metal ion from group two.

[00:16:29]Beryllium is also one of the metals in Group 2. That magnesium is also there. That calcium is also there.

[00:16:33]That's strontium too. That barium is also there. I am telling you this after seeing it from the patient's table.

[00:16:36]What has the highest value in the ion? What does highest value mean? Whichever has the greatest value.

[00:16:42]Now if I choose any of these group two metals and when its ion is formed, then you know, for example, take the example of calcium. So the nucleon number of calcium is 40. The nucleon number is basically the sum of protons and neutrons. And what are those electrons?

[00:16:59]What does the atomic number tell you? Sum of protons and electrons. So what does your nucleon number say? Sum of protons and neutrons.

[00:17:09]So the largest number will always be the nucleon number. Because if you add something to the protons, nuclei will be formed.

[00:17:16]Protons and electrons are equal.

[00:17:17]Meaning if there are 20 protons then there are also 20 electrons. But the nucleon number of every atom will always be greater than its proton number except for the atoms of one element.

[00:17:26]Which element's atom is that? The element whose proton number and nucleon number are same is hydrogen. Apart from this, all the elements in the periodic table, except for hydrogen, always have the largest nucleon number.

[00:17:42]If we talk about electrons, then look, it is losing electrons, so its electrons will be less than its original atom. So of course it will be less than the nucleon number. So what will be the biggest number? The nucleon number will be.

[00:17:54]Very straight forward.

[00:17:58]Okay brother, question number three, it was question number four. Say the properties of two elements P and Q in the periodic table. Are you looking for an element?

[00:18:05]Okay, P is your group seven element, okay, those are your halogens, and Q is your group one metal. P and Q react together to form a compound. That compound must be an ionic compound, right? It must be an ionic compound. Okay, the charge on Q will be +1 because it is a group one metal. The charge on the ion P will be negative one because it is a group one non-metal. Now the formula that will be made for this should be QP. What should the formula be? QP That's it. Right? If this PQ was also written, son, then that would also have been correct. If you are creating a general form like this. Once a question came in which he wrote the cation later. I had written it earlier. For example, if I ask you, which metal is your metal Q? So the third metal in group one is sodium and the second non-metal in group seven is chlorine. So basically this formula will be made of sodium chloride. Can I write this as clna? Actually, we do not write but if he writes by swiping like this in any option then that also gets corrected.

[00:19:10]So even if it was written pq instead of qp here, it would have been correct. But the option is that one of these will be given at a time.

[00:19:17]Either qp is given or pq is given. So this is option A.

[00:19:22]Right? Question number five: Which describes the properties of a simple molecular compound? What are simple molecular compounds? Like water, carbon dioxide, hydrogen.

[00:19:33]You know that the bonding that occurs in simple molecular compounds, hydrogen is not a compound. Well, there is Element. You can do this.

[00:19:40]HCL is done. The bonding that occurs in them is covalent bonding and the force that occurs between these molecules is intermolecular force.

[00:19:49]And they all have low melting points and boiling points due to weak intermolecular forces and they do not conduct electricity. Why? Because they do not have free electrons or free ions. Good. Now you have to choose the melting point and boiling point in this. So you will go towards those which have low melting point and boiling point.

[00:20:08]As soon as this happened, option C was done. And what will be the electrical conductivity? She will be poor. Ok? So what will be the answer to this? It has to be option C.

[00:20:20]Which question are you asking again?

[00:20:21]Question number.

[00:21:21]So