CBSE Class 12 Chemistry Daily Practice Questions 25 October 2023

CBSE Class 12 Chemistry Daily Practice Questions 25 October 2023

CBSE Class 12 Chemistry Daily Practice Questions for 25 October 2023: Candidates are advised to solve CBSE Class 12th Chemistry practice questions daily to understand the concepts of chemistry better, It helps students to identify the areas where they need more practice and focus. Regular practice of CBSE Class 12 chemistry questions improves problem-solving skills, boosts their confidence, and prepares students for board exams effectively.

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CBSE Class 12 Chemistry Daily Practice Questions for 25 October 2023

Students can analyse their CBSE Class 12 Chemistry exam performance by solving daily practice questions shared below.

Question 1: Multiple-Choice Questions

The ions of metals of Group 12 (Zn, Cd and Hg) have completely filled d orbitals and so they :
(a) behave like semiconductors
(b) are very high melting solids
(c) do not behave like transition metals
(d) behave like superconductors

Question 2: Very Short Answer Type Question

Name the cell which :
(a) was used in Apollo Space programme.
(b) is used in automobiles and inverters.
(c) is suitable for hearing aids and watches.
(d) does not give a steady potential and is used in transistors.

Question 3: Short Answer Type Question

Account for the following :
(a) Benzyl chloride is highly reactive towards S _N 1 reaction.
(b) (±)-Butan-2-ol is optically inactive, though it contains a chiral carbon atom.
(c) Chloroform is stored in closed dark coloured bottles.

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Question 4: Case-Based Question

Amines are usually formed from nitro compounds, halides, amides, imides, etc. They exhibit hydrogen bonding which influences their physical properties. In alkyl amines, a combination of electron releasing, steric and hydrogen bonding factors influence the stability of the substituted ammonium cations in protic polar solvents and thus affect the basic nature of amines. In aromatic amines, electron releasing and withdrawing groups, respectively increase and decrease their basic character. Influence of the number of hydrogen atoms at nitrogen atom on the type of reactions and nature of products is responsible for identification and distinction between primary, secondary and tertiary amines. Presence of amino group in aromatic ring enhances reactivity of the aromatic amines. Aryl diazonium salts provide advantageous methods for producing aryl halides, cyanides, phenols and arenes by reductive removal of the diazo group.
Answer the following questions :

Question 5: Long Answer Type Question

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