ufsignal.blogg.se - Class b practice test ca

Reason (R) : EDTA has 2 nitrogen and 4 oxygen donor atoms.

Assertion (A): EDTA is a hexadentate ligand.

Reason (R) : Carboxyl group increases the electron density at the meta position.

Assertion (A) : Bromination of benzoic acid gives m-bromobenzoic acid.

Reason (R) : In first order kinetics when concentration of reactant is doubled, its half life is doubled.

Assertion (A) : The half life of a reaction is the time in which the concentration of the reactant is reduced to one half of its initial concentration.

Reason (R) : Vitamin C is fat soluble and is excreted from the body in urine.Īnswer: (c) Assertion (A) is true but Reason (R) is false

Assertion (A) : Vitamin C cannot be stored in our body.

(d) Assertion (A) is false, but Reason (R) is true.Īnswer: (a) Both Assertion (A) and Reason (R ) are true and (R) is the correct explanation of the Assertion (A). (c) Assertion (A) is true but Reason (R) is false. (b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A). (a) Both Assertion (A) and Reason (R ) are true and (R) is the correct explanation of the Assertion (A). Select the correct answer to these questions from the codes (a), (b), (c ), and (d) as given below: Which of the following would not be a good choice for reducing nitrobenzene to aniline?įor the questions 15 to 18, two statements are given - one labeled as Assertion (A) and the other labelled as Reason (R ).

Which property of transition metals enables them to behave as catalysts?ġ4. Which two of these reactions are most likely to occur when concentrated brine is electrolysed?ġ3. Four half reactions I to IV are shown below: You can refer to the CBSE class 12 Chemistry paper 2023 answer key in this article.ġ2. It’ll help you get a faint idea of your exam score.

However, you can check the but correct answer key for the CBSE class 12 Chemistry paper 2023 here.

The board doesn’t release the CBSE Class 12 Chemistry exam 2023 answer key this soon. But it's important to know the SET 1, 2, 3 and 4 CBSE Class 12 answer key for that. Students can know how and what to dispute in case their score suffers due to an external mistake. However, going over answers after exams can also reveal mistakes in questions.

It’s not a recommended practice, but quite irresistible. One long-running after-exam tradition among students is discussing the question papers. Millions of students gave the exam, and all had varied experiences. CBSE Class 12 Chemistry Answer Key 2023 : The Central Board of Secondary Examination (CBSE) Class 12 examinations have begun, and the highly important science stream exam of Chemistry was conducted today, February 28, 2023, from 10:30 AM to 1:30 PM.