JAMB CBT Chemistry 2021 Past Questions 1 - 20

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  • Опубліковано 24 січ 2025

КОМЕНТАРІ • 80

  • @j7_codm591
    @j7_codm591 Рік тому

    I like the fact that u answer every single comment no matter how many they are....it helps a lot

    • @MyschoolNigeria
      @MyschoolNigeria  Рік тому

      Thank you for appreciating us, we're always here to serve you, God bless.

  • @clinton4669
    @clinton4669 10 місяців тому

    I appreciate my school helped me a lot in preparing for my jamb

    • @MyschoolNigeria
      @MyschoolNigeria  10 місяців тому

      Glad we could help, thank you for feedback.

    • @MaryannOnah
      @MaryannOnah 9 місяців тому

      That means you scored 70 and above in chemistry in JAMB😅

  • @nanahauwa3229
    @nanahauwa3229 2 роки тому +1

    Really enjoyed the class....God bless you🙏🏻

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      We are glad you find this channel helpful, enjoy.

  • @zionthagreat3397
    @zionthagreat3397 2 роки тому +1

    Can't wait for Part2.
    Please make it no calculation as this, I really enjoyed this.
    Imagine this is what I will face in my coming UTME Examination, oh lala.
    My School You're Shaping me, my foundation is somehow faulty, I'm grateful for this.
    More Grace And Wisdom ❣️

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      Thank you for your warm appreciation, we are glad you find this channel helpful.

  • @kydabior.s
    @kydabior.s Рік тому

    Hello sir ,I don't really get the no 1.isnt it butylbromide since it has 4 carbon . Why is it isobutylbromide .

    • @MyschoolNigeria
      @MyschoolNigeria  Рік тому

      Common name : Isobutyl bromide
      IUPAC name: 1-Bromo-2-methylpropane
      Boiling point: 102°C
      Formula: C4H9Br
      Hence, the molecular formula C4H9Br has several isomers if you search in Wikipedia, naming the structure given in the question correctly would be an isobutyl bromide.

  • @maryamajeje7834
    @maryamajeje7834 2 роки тому

    Okay I gotta say, this is really helpful...thank you myschool

  • @Denisjoy386
    @Denisjoy386 2 роки тому +1

    Please explain question number 20,4 and the question that says the atomic weight of nitrogen is?

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      The explanations given in the videos become simpler to you when you read up on Alkynes for Qst 4 and Atoms for Qst 20.

  • @TZ__GAMING
    @TZ__GAMING Рік тому

    Thank you very much and God.bless you 👍

  • @raphaelaikoriogie718
    @raphaelaikoriogie718 2 роки тому +1

    Thank you sir for your effort

  • @mercyalexander7624
    @mercyalexander7624 2 роки тому +1

    Thanks for the tutorial

  • @ChinemeremFavour-hb3gr
    @ChinemeremFavour-hb3gr 10 місяців тому

    It's been really helpful, but am still lacking a bit behind in organic chemistry like naming of compounds nd the rest

  • @marigoldgold9146
    @marigoldgold9146 2 роки тому +6

    You said that the answer is isobutyl bromide but CH4 is methane and removal of one hydrogen bond makes it methyl pls can u explain better

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому +6

      Thanks for writing in!
      The meaning of BUTYL is any of four isomeric alkyl radicals C4H9- derived from butane.
      C4H9Br as Isobutyl Bromide can be expressed in various isomers, such as 1-bromobutane, 2-bromobutane, 1-bromo-2- methylpropane etc.

  • @movieshub-v3p
    @movieshub-v3p 2 роки тому

    Thanks a lot
    Had a bit of difficulty on what to prepare for during my jamb
    The only regret i have is that i saw your video content late😢
    But still keep up the good work

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      Thank you for appreciating our work, it's never too late ones you discover myschool, wishing you all the best.

  • @AgwomHannahJoseph-up2qt
    @AgwomHannahJoseph-up2qt 9 місяців тому

    Thanks so much sir

  • @joyuberu761
    @joyuberu761 Рік тому

    Thanks for the great job but please explain more about the first twenty element

    • @MyschoolNigeria
      @MyschoolNigeria  Рік тому

      Kindly click this link myschool.ng/questions/academic-questions to ask all your academic questions and get immediate response.

  • @zurumejikeme7883
    @zurumejikeme7883 2 роки тому

    Thanks for this tutorial ❤️❤️

  • @tetteyderick4594
    @tetteyderick4594 2 роки тому

    Please the solution for the theory questions for 2021 chemistry

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      There are no theory questions in JAMB. However, I believe you're asking for WAEC 2021 chemistry theory questions and solutions, please click on this link to have access to them myschool.ng/classroom/chemistry?exam_type=waec&exam_year=2021&type=theory&topic=

  • @chiamakaobih7508
    @chiamakaobih7508 2 роки тому

    Amazing tutorial😌💚

  • @onojastanley9401
    @onojastanley9401 2 роки тому

    Thanks so much sir this is really helpful

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      We are glad you find this channel helpful, enjoy.

  • @folakeoladele7495
    @folakeoladele7495 9 місяців тому +1

    Can I have private lesson with you sir?

    • @MyschoolNigeria
      @MyschoolNigeria  9 місяців тому

      No we don't do private lessons but we have topic by topic video lessons on English and Mathematics for now.

  • @chidimmanwadialu6774
    @chidimmanwadialu6774 2 роки тому

    Sir please how can I join your class to for post UTME

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      Thank you for writing in Chidimma.
      We don't have video classes on post UTME specifically, but we do have topic by topic video lessons. Click on this link to join the class by subscribing myschool.ng/store/video-lessons-subscription we have just Mathematics and English for now.

  • @UNIQUECHEMISTRY-CODINGSCHOOL
    @UNIQUECHEMISTRY-CODINGSCHOOL 9 місяців тому

    Are these questions real jamb questions? They look too cheap for jamb. The atomic weight of Nitrogen?😮
    I am just curious

  • @omasorojosphine1007
    @omasorojosphine1007 2 роки тому

    I don't know what to put in the username I have tried to many number and name but still showing incorrect

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      If you are trying to register for the first time, please try use a mixture of letters and numbers, uppercase and lowercase letters would do the trick.

    • @omasorojosphine1007
      @omasorojosphine1007 2 роки тому +1

      Thanks

    • @omasorojosphine1007
      @omasorojosphine1007 2 роки тому

      I have signed up what is the next step

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      Click on (Buy Activation Code) and follow the procedure to make payment, and gain access to Practice all JAMB CBT Past Questions, WAEC SSCE or GCE Past Questions (Objective & Theory), Post-UTME Questions, NECO, NABTEB & Even Your 1st Year Past Questions, here on Myschool CBT centre. You can even study all these past questions, perfectly arranged exam by exam, subject by subject or year by year.
      This free online platform gives you access to over 60,000 past questions mentioned above, enjoy.

    • @milliondreams423
      @milliondreams423 2 роки тому

      I swr

  • @emmanueljohnson6807
    @emmanueljohnson6807 2 роки тому

    How can I download My school app on my iphone device

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      We don't have the myschool app on IOS yet, please access the app by downloading through an android playstore, software for your laptop device or better still use the myschool official website www.myschool.ng

  • @omotososakiru7982
    @omotososakiru7982 2 роки тому

    Pls myschool,in question1,why is it isobutyl bromide and not ordinary butyl bromide?

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      Butyl bromide may refer to: 1-Bromobutane (n-Butyl bromide); 2-Bromobutane (sec-butyl bromide); 1-Bromo-2-methylpropane (isobutyl bromide).

  • @giawilliams7127
    @giawilliams7127 2 роки тому

    Thank you🥰

  • @crazytutorials8918
    @crazytutorials8918 2 роки тому +1

    Please, I'll like to urge you to state why the other options isn't the answer
    Some of us don't understand.Eg the breath test question

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      The earliest developed breathalyzer was based on reaction of alcohol if present in the exhaled air with a cocktail of chemicals containing sulfuric acid, potassium dichromate, silver nitrate, and water. Silver nitrate catalyzes the reaction between alcohol and potassium dichromate in acidic medium. Option A,B and C are not appropriate to fit in as the answer.

  • @maryamajeje7834
    @maryamajeje7834 2 роки тому

    May I pls be more enlightened about question 20?

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      More explanation has been provided on the Myschool website.
      Kindly access it via this link below:
      myschool.ng/classroom/chemistry/60499?exam_type=jamb&exam_year=2021&page=4

  • @blesynray
    @blesynray 2 роки тому

    Please what about IOS devices, is any app available for IOS devices

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      We do not have the myschool app on IOS yet, if you want to download the myschool app through your android device please click this link play.google.com/store/apps/details?id=com.myschool.cbt

  • @anthonyekene4647
    @anthonyekene4647 2 роки тому

    Pls I can't download my school app.what is the problem?

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      We do not have the myschool app on IOS yet, if you want to download the myschool app through your android device please click this link play.google.com/store/apps/details?id=com.myschool.cbt

  • @praiseibisowest8290
    @praiseibisowest8290 2 роки тому

    I don’t understand how oxygen is present in kerosene and not soil

  • @victoryakpoyibo3839
    @victoryakpoyibo3839 2 роки тому

    The audio is bad, seems only one channel is working.

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому +1

      It should be from the device you are using to access the video, the audio is working perfectly fine.

  • @creatingperpetualwealthwit4094
    @creatingperpetualwealthwit4094 2 роки тому +1

    This is totally different from what we have on the printed hard copy sold in the market... My school why????

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      Thank you for writing in.
      Please be reminded that printed copies are from different publishers and of various question types.

    • @davidigbinosa7757
      @davidigbinosa7757 2 роки тому

      That's true, the one I answered before coming here is totally different from these questions

  • @joynekekpemi9216
    @joynekekpemi9216 2 роки тому

    Pls I haven't gotten my activation code yet and v paid

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      Sorry for the issues you currently face with activation. For instant activation, please use the online (ATM Card) paystack option of payment. Because we require some sensitive info, please call between 9am - 5pm from Monday to Friday on this line; +234-9062547747 or send your payment information to; "info@myschool.ng" . We will resolve this ASAP.

  • @odukudusunday247
    @odukudusunday247 2 роки тому

    You talk too much, just go straight to the point oga

    • @MyschoolNigeria
      @MyschoolNigeria  2 роки тому

      We would have that in mind.

    • @BlessingMoses-ny6wf
      @BlessingMoses-ny6wf 9 місяців тому

      @odukudusunday247
      I guess your parents didn't teach you respect and manners and it's so unfortunate