CBSE Class 12 Chemistry Answer Key 2021-22 released, check paper analysis here

CBSE Class 12 Chemistry Answer Key 2021-22 released, check paper analysis here

Experts have released the CBSE 12th Term 1 answer key 2021 for Chemistry exam. Students can use it to calculate their probable score. Check the answer key and exam analysis here

The Central Board of Secondary Education (CBSE) conducted the Class 12 Chemistry exam today, i.e. December 14, 2021 between 11:30 am and 1 pm. The board will release the CBSE Class 12 answer key 2021 for the paper soon on its official website. Till then, students can use the answer key of Class 12 Chemistry CBSE by experts here.

Students can use this answer key to calculate their probable score in the Chemistry exam. The answer key of Class 12 Chemistry CBSE is given below:

1. Which one of the following pairs will form an ideal solution?

(A) Chloroform and acetone

(B) Ethanol and acetone

(C) n-hexane and n-heptane

(D) Phenol and aniline

Answer: (C)

2. Which of the following is known as amorphous solid?

(A) Glass

(B) Plastic

(C) Rubber

(D) All of these

Answer 2: (A)

3. The structure of pyrosulphuric acid is

Answer 3: (C)

4. The C-O-H bond angle in alcohol is

(A)slightly greater than 109o28’.

(B)Slightly less than 109o28’.

(C)Slightly greater than 120o.

(D)Slightly less than 120o.

Answer: (B)

6. Nucleosides are composed of

(A) a pentose sugar and phosphoric acid

(B) a nitrogenous base and phosphoric acid

(C) a nitrogenous base and a pentose sugar

(D) a nitrogenous base, a pentose sugar and phosphoric acid

Answer: (C)

7. The oxidation state of -2 is most stable in:

(A) O

(B) S

(C) Se

(D) Te

8. Which of the following is not a characteristic of a crystalline solid?

(A) A true solid

(B) A regular arrangement of constituent particles

(C) Sharp melting point

(D) Isotropic in nature

9. Which of the following formula represents Raoult's law for a solution containing non-volatile solute?

(A) psolute = posolule. xsolute

(B) p = KH.X

(C) PTotal = PSolvent

(D) psolute = posolvent. Xsolvent

10. An azeotropic solution of two liquids has a boiling point lower than either of the two

when it

A) shows a positive deviation from Raoult's law

(B) shows a negative deviation from Raoult's law

(C) shows no deviation from Raoult's law

(D) is saturated

Adding more answers shortly...

CBSE Class 12 Chemistry Exam Analysis

Naman Jain, Education Policy Expert, and Director Silverline Prestige School, Ghaziabad shared that from teacher's perspective, “The Paper was balanced and NCERT based.” While students were satisfied as they were expecting tricky questions. However, the paper was based on CBSE sample paper.

CBSE 12^th Term 1 Chemistry Exam Highlights

• The exam is of 1 hour 30 minutes duration. It began at 11:30 am and go on till 1 pm.
• The paper included all MCQs with no provision of negative marking.
• CBSE is holding the board exams in OMR sheets for the first time this academic session.
• Students are required to darken the correct option using a black or blue point pen only. Use of pencil is not allowed during exams.

The board is expected to release the CBSE Class 12 Result 2021 in January 2022 on the official website. Students must note that the board will not conduct any re-test or compartment exams after the Term 1 results are announced. These will be held only after the Term 2 result is released.

Disclaimer: The answer keys provided above have been provided by experts. Shiksha.com is not responsible for any discrepancy in the options above. Students must consult their subject teachers to confirm the accuracy of answers.

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