JAMB CBT Chemistry 2023 Past Questions 41 - 60

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  • Опубліковано 22 гру 2024

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  • @GloryUmukoro-gk5oy
    @GloryUmukoro-gk5oy 9 місяців тому +3

    The fact that there are different transitions for each video is so amazing 🤩

  • @EnyiPrincess-vf1nr
    @EnyiPrincess-vf1nr 8 місяців тому

    Thank you sir this was really helpful.

  • @funnyhouse115
    @funnyhouse115 10 місяців тому +1

    good one i really enjoyed your class

  • @PreciousBanvigha
    @PreciousBanvigha 8 місяців тому

    Wow this is great 😃👍

  • @Thoannic
    @Thoannic 10 місяців тому

    U ar good sir, great explanation brief and straight forward 🧘🏾‍♂️🙇🏾‍♂️🔥

  • @NdubuisiNweke-oy7nt
    @NdubuisiNweke-oy7nt 10 місяців тому

    This is helpful❤❤

  • @sunusisanisyarima20
    @sunusisanisyarima20 10 місяців тому +1

    ❤❤❤❤🎉🎉🎉🎉 thanks

  • @JennyDoris-nz3mh
    @JennyDoris-nz3mh 10 місяців тому

    Thanks sir

  • @UshieFelicityAwhobiwom
    @UshieFelicityAwhobiwom 10 місяців тому

    Thanks

  • @IgaboDeborah-ct2qb
    @IgaboDeborah-ct2qb 10 місяців тому +1

    Thank you sir 🎉

    • @MyschoolNigeria
      @MyschoolNigeria  10 місяців тому

      Welcome.

    • @KhalidKabirAhmad
      @KhalidKabirAhmad 10 місяців тому

      Hi​@@MyschoolNigeria

    • @MyschoolNigeria
      @MyschoolNigeria  10 місяців тому

      Hi, how may we be of help?

    • @KhalidKabirAhmad
      @KhalidKabirAhmad 10 місяців тому

      @@MyschoolNigeria how much and how to activate myschool app

    • @MyschoolNigeria
      @MyschoolNigeria  10 місяців тому

      The myschool activation code is one thousand naira, click on this link myschool.ng/latest-jamb-cbt-practice-mobile-app-free-download to download the app, after setting up the app with your loggin details, click on "BUY ACTIVATION CODE" then tap on "PLACE AN ORDER" ones you see the account numbers to pay, read the instructions below carefully to know the exact payment details to send to us after making the payment, then wait for confirmation from us.

  • @richesnekperechukwu5599
    @richesnekperechukwu5599 10 місяців тому

    Myschool! You video lessons never load on my phone even after trying for some time

    • @MyschoolNigeria
      @MyschoolNigeria  10 місяців тому +1

      You may have been doing something wrong, kindly call our helplines to resolve your issue.
      Call Hours: 9am - 5pm (Mon - Fri)
      +234-913-373-3736
      +234-814-666-9200
      +234-906-832-9240
      +234-818-491-6861
      +234-817-002-3468
      +234-817-002-3469

  • @stephenemmanuel7583
    @stephenemmanuel7583 8 місяців тому

    In question 50, you said a good example of a compound that has trigonal planar shape is ammonia, ammonia has a lone pair so it's trigonal pyramidal not trigonal planar.
    Thank you.

    • @MyschoolNigeria
      @MyschoolNigeria  8 місяців тому

      You're correct, it's just a slip.

    • @MaryannOnah
      @MaryannOnah 8 місяців тому

      You did not correct it publicly

  • @Bor-h2c
    @Bor-h2c 10 місяців тому +1

    Please I need help I downloaded my school app and to register am having problem with it. They are saying this user name has been taken and how much is the activation code.

    • @Dan4christ
      @Dan4christ 10 місяців тому

      i think 1k

    • @MyschoolNigeria
      @MyschoolNigeria  10 місяців тому

      Try to use upper and lower case with mixture of letters, and numbers. The activation code is one thousand naira.

  • @MosesEze-zn9fc
    @MosesEze-zn9fc 9 місяців тому

    How can you get the school app

    • @MyschoolNigeria
      @MyschoolNigeria  9 місяців тому

      After studying these videos, you should try to test yourself. You can test yourself by taking a simulated JAMB CBT exam using any of the following tools;
      1. JAMB CBT Practice Mobile App; myschool.ng/latest-jamb-cbt-practice-mobile-app-free-download
      2. JAMB CBT Practice Software; myschool.ng/latest-jamb-cbt-practice-software-free-download

  • @FodiyoAbubakar-o6y
    @FodiyoAbubakar-o6y 10 місяців тому

    Please sir we need your explanation about exothermic and endothermic reaction how can we recognise exothermic and endothermic reaction

    • @MyschoolNigeria
      @MyschoolNigeria  10 місяців тому +2

      If a reaction releases more energy than it absorbs, the reaction is exothermic and enthalpy will be negative.
      If a reaction absorbs or uses more energy than it releases, the reaction is endothermic, and enthalpy will be positive.

  • @incline1458
    @incline1458 8 місяців тому

    omo thNK YOU

  • @FrancisOnochie-i1w
    @FrancisOnochie-i1w 9 місяців тому

    Question 55 I think the question is asking for valence of an atom of chlorine which is 7.... I don't understand how you chose 1

    • @MyschoolNigeria
      @MyschoolNigeria  9 місяців тому

      Yes, but it is easier for chlorine to accept one electron than to give out 7 electrons, hence the valency is 1. Ones it accepts an electron, the number of electron on its outer most shell becomes 8 making it stable, don't forget that chlorine is a non metal, and they ionize by accepting electron(s).

    • @FrancisOnochie-i1w
      @FrancisOnochie-i1w 9 місяців тому

      @@MyschoolNigeria does it mean that the valence of phosphorus is 2 ..I still not understand

    • @MyschoolNigeria
      @MyschoolNigeria  8 місяців тому

      Valence has to do with the number of electron(s) an element is ready to give out or receive during a chemical reaction. Phosphorus has to valences 5 and 3.

    • @FrancisOnochie-i1w
      @FrancisOnochie-i1w 8 місяців тому

      @@MyschoolNigeria it is a mistake, What I mean is sulphur... I think valence mean the number of incomplete electron in outermost shell

    • @MyschoolNigeria
      @MyschoolNigeria  8 місяців тому

      The number of incomplete electron in outermost shell is what determines the number of electron(s), an element can give out or receive during a chemical reaction, and that is what is called valency.

  • @chidipaul8845
    @chidipaul8845 6 місяців тому

    This valence electron of chlorine is confusing because group 1 element have 1 how come halogen have 1 as well

    • @MyschoolNigeria
      @MyschoolNigeria  6 місяців тому

      The question is talking about valency not valence electron, and valency means the combining power of an element which represents the number of electron an element is willing to give out or receive during chemical reaction, in the case of halogen they will accept 1 electron in order to become stable.

  • @iykeokafor9639
    @iykeokafor9639 10 місяців тому +1

    👏

  • @ah_phy9472
    @ah_phy9472 9 місяців тому

    Please is valency not supposed to be the number of elements in the outermost shell, which is 7

    • @MyschoolNigeria
      @MyschoolNigeria  9 місяців тому

      Yes, but it is easier for chlorine to accept one electron than to give out 7 electrons, hence the valency is 1. Ones it accepts an electron, the number of electron on its outer most shell becomes 8 making it stable, don't forget that chlorine is a non metal, and they ionize by accepting electron(s).

  • @TunmiseOlayiwola
    @TunmiseOlayiwola 10 місяців тому

    Thanks 🎉
    But there are very few calculations

    • @MyschoolNigeria
      @MyschoolNigeria  10 місяців тому

      Stay tuned as we keep uploading more videos.

  • @MathewOkeh
    @MathewOkeh 9 місяців тому

    Question 45,the ratio is 1:2 not 2;1

    • @MyschoolNigeria
      @MyschoolNigeria  9 місяців тому

      According to Graham's law of diffusion, the ratio of the diffusion rates of two gases is the inverse of the square root of the ratio of their molar masses. Therefore:
      Rate of A / Rate of B = √(Molar mass of B / Molar mass of A)
      Rate of A / Rate of B = √(64 g/mol / 32 g/mol) = √2 = 1.41
      So, the ratio of their diffusion rates is approximately 2:1

  • @MaryannOnah
    @MaryannOnah 8 місяців тому

    I thought the question ends at 40

    • @MyschoolNigeria
      @MyschoolNigeria  8 місяців тому

      Thank you for writing in.
      The CBT mode of examinations presents different questions to different candidates at the same time. That's also why we have more than the normal number of questions, which is 40. JAMB draws questions from a pool of questions in their database. Hence the reason we emphasize that you should practice as many questions as possible.

  • @ChidinmaOgubike
    @ChidinmaOgubike 10 місяців тому +1

    Thanks alot sir

  • @MubarakMuhammadSani-w9e
    @MubarakMuhammadSani-w9e 10 місяців тому

    Thanks

  • @MathewOkeh
    @MathewOkeh 9 місяців тому

    Question 45,the ratio is 1:2 not 2;1

    • @MyschoolNigeria
      @MyschoolNigeria  9 місяців тому

      According to Graham's law of diffusion, the ratio of the diffusion rates of two gases is the inverse of the square root of the ratio of their molar masses. Therefore:
      Rate of A / Rate of B = √(Molar mass of B / Molar mass of A)
      Rate of A / Rate of B = √(64 g/mol / 32 g/mol) = √2 = 1.41
      So, the ratio of their diffusion rates is approximately 2:1

  • @FodiyoAbubakar-o6y
    @FodiyoAbubakar-o6y 10 місяців тому

    Thank you sir

  • @CordeliaAnthony-vr1bu
    @CordeliaAnthony-vr1bu 10 місяців тому

    Thank you sir 😊

  • @ObiefunaChisom
    @ObiefunaChisom 9 місяців тому

    ❤ thank you sir

  • @Ojiyovwikingsley
    @Ojiyovwikingsley 9 місяців тому

    Thank you sir😊