International 12th Class Chemistry Quiz Ranking Competition [May 2024]

International 12th Class Chemistry Quiz Ranking Competition Announcing the International 12th Class Monthly Chemistry Quiz Ranking Competition of 2024! The International 12th Class Chemistry Quiz Ranking Competition of 2024 invites all 12th students with a passion for chemistry to put their knowledge to the test. No registration fees required, just pure scientific enthusiasm!

Time: 30 Minutes for 20 Question.

Class 12th Chemistry Quiz Contest [May 2024]

The number of attempts remaining is 1

1 / 20

1. Chlorobenzene is prepared commercially by

Raschig process

Wurtz Fittig reaction

Friedel-Craft’s reaction

Grignard reaction

2 / 20

2. Benzaldehyde can be prepared by oxidation of toluene by

Acidic KMnO₄

K₂Cr₂O₇ / H+

CrO₂Cl₂

All of these

3 / 20

3. Phosgene is a common name for

phosphoryl chloride

thionyl chloride

carbon dioxide and phosphine

carbonyl chloride

4 / 20

4. The catalyst used in the preparation of an alkyl chloride by the action of dry HCl on an alcohol is

anhydrous AlCl₃

FeCl₃

anhydrous ZnCl₂

5 / 20

5. Aldehydes can be oxidised by :

Tollen’s reagent

Fehling solution

Benedict solution

All the above

6 / 20

6. A Grignard reagent may be made by reacting magnesium with

Methyl amine

Diethyl ether

Ethyl iodide

Ethyl alcohol

7 / 20

7. An important chemical method to resolve a racemic mixture makes use of the formation of

a meso compound

enantiomers

diasteromers

racemates

8 / 20

8. Which of the following reacts with NaOH to give an alcohol?

Propene

Butene

Ethanal

Methanal

9 / 20

9. Which of the following will have the maximum dipole moment?

CH₃F

CH₃Cl

CH₃Br

CH₃I

10 / 20

10. Benzene hexachloride is

1, 2, 3, 4, 5, 6 - hexachlorocyclohexane

1, 1, 1, 6, 6, 6 - hexachlorocyclohexane

1, 6 - phenyl - 1, 6 - chlorohexane

1, 1 - phenyl - 6, 6 -chlorohexane

11 / 20

11. C – X bond is strongest in

CH₃Cl

CH₃Br

CH₃F

CH₃I

12 / 20

12. Alkenes convert into alcohols by

hydrolysis by dil. H₂SO₄

hydration of alkene by alkaline KMnO₄

hydrolysis by water vapours and conc. HNO₃

hydration of alkene by aqueous KOH

13 / 20

13. Which one of the following halogen compounds is difficult to be hydrolysed by SN1 mechanism?

Tertiary butyl chloride

Isopropyl chloride

Benzyl chloride

Chlorobenzene

14 / 20

14. How many isomers of C₅H₁₁OH will be primary alcohols ?

15 / 20

15. Conant Finkelstein reaction for the preparation of alkyl iodide is based upon the fact that

Sodium iodide is soluble in methanol, while sodium chloride is insoluble in methanol

Sodium iodide is soluble in methanol, while NaCl and NaBr are insoluble in methanol

Sodium iodide is insoluble in methanol, while NaCl and NaBr are soluble

The three halogens differ considerably in their electronegativity

16 / 20

16. An organic molecule necessarily shows optical activity if it

contains asymmetric carbon atoms

is non-polar

is non-superimposable on its mirror image

is superimposable on its mirror image

17 / 20

17. Which of the following is an optically active compound?

4-Hydroxyheptane

1-Butanol

1-Propanol

2-Chlorobutane

18 / 20

18. Tertiary alkyl halides are practically inert to substitution by SN2 mechanism because of

steric hindrance

inductive effect

instability

insolubility

19 / 20

19. Ethyl alcohol is industrially prepared from ethylene by

Permanganate oxidation

Catalytic reduction

Absorbing in H₂SO₄ followed by hydrolysis

All the three

20 / 20

20. Which among MeX, RCH₂X, R₂CHX and R₃CX is most reactive towards SN₂ reaction?

MeX

RCH₂X

R₂ C HX

R₃CX

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Class 12th Chemistry Rankers of Feb 2024

Must Fill-up Google Form for Photo Ranking List

12th Chemistry Top Rankers of Feb 2024
Rank	Student Name	School
1	Kartikaya Srivastava	Not Available
2	Shivani Lath	Not Available
3	Siddhant Pengoriya	Not Available
4	Vinod Kumar	Not Available
5	Vatsal Varshney	Not Available
6	Amrutanshu Mohanty	Not Available
7	Vinod Kumar	Not Available
8	Apoorva Jain	Not Available
9	Divjot Kaur	Not Available
10	Kushagra Mishra	Not Available

Mizoram top rankers 2024

Andhra Pradesh Toppers 2024

All India CBSE Toppers 2024

Chhattisgarh toppers 2024

Chemistry Quiz Competition Details for 2024:

Registration: No Registration required. Only attempt Participate without any charges! Embrace this chance to pit your chemistry skills against international competitors.
Competition Time: 24 x 7 but once every month
Results Announcement: 2nd day of next month

Eligibility Criteria for 12th Grade Chemistry Quiz Competition 2024:

Contestants must be enrolled in the 12th grade or its international equivalent. A fervent interest in chemistry and the drive to learn is all we seek!

Competition Format: Tackle a series of intriguing questions spanning various chemistry subjects. This is your chance to flaunt your understanding of chemical reactions, properties, and much more.

Preparation Tips for the Chemistry Quiz Competition:

Familiarize with Your Syllabus: Delve deep into your 12th-grade chemistry curriculum. Mastery over every topic is crucial.
Daily Chapter-wise Chemistry Quizzes: Engage in our tailored quizzes to solidify concepts and pinpoint areas demanding more attention.
Engage in Peer Competition: Share quizzes with peers and indulge in friendly battles to spice up your preparation journey.

By embracing these strategies, you’re gearing up to ace the International 12th Class Chemistry Quiz Ranking Competition of 2024. Best of luck!

Also other quiz competition for 2024

FAQ of 12th Chemistry Quiz Competition 2024

Q1. What is the International 12th Class Chemistry Quiz Ranking Competition of 2024?

A. This global event aims to challenge and assess the chemistry understanding of students in the 12th grade or equivalent.

Q2. How can I participate?

A. Register on our official website: https://QuizRanker.org. No fees, only your dedication and sharing our portal with your friends!

Q3. When is the quiz start of Chemistry 12th class?

A. 24 x 7 open but only once allowed per student.

Q4. What is the eligibility requirement?

A. Enrolment in the 12th grade or its international counterpart is mandatory. Enthusiasts of chemistry, we await you!

Q5. How is the competition structured?

A. Held online, this quiz delves into various chemistry areas, as prescribed in the 12th-grade syllabus. Specifics will be shared post-registration.

Q6. Any provided preparatory resources?

A. We recommend reviewing your academic curriculum. You can also regularly engage in our chapter-specific quizzes for efficient preparation.

Q7. Can my friends and I compete jointly?

A. While you can share quizzes for mutual practice, the primary competition remains an individual challenge.

Q8. Is there a participation cap for countries?

A. Absolutely not! We welcome and encourage participation from students globally in the International 12th Class Chemistry Quiz Ranking Competition of 2024.

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QuizRanker.org is a free academic quiz portal for international students. We do not charge any fees for taking quizzes. The portal is completely free for students. Students can also study MCQ practice questions in PDF format on this portal. We earn revenue through academic writing content from our DistPub.com portal as well as website development. Students can get academic assistance like assignment writing help and MBA project report writing i.e. NMIMS Solved assignments and NMIMS Project reports. We do not charge fees up to 12th grade education. Fees are only charged for graduate level educational assistance.