CBSE Class 12 Chemistry Daily Practice Questions 17 October 2023

CBSE Class 12 Chemistry Daily Practice Questions 17 October 2023

CBSE Class 12 Chemistry Daily Practice Questions for 17 October 2023: Chemistry being the fundamental subject demands a conceptual understanding of chemical reactions and formulas. Solving CBSE Class 12th Chemistry practice questions is essential to score well in the board examination. Candidates are recommended to practice the questions shared here to score high in the CBSE Class 12 chemistry exam and attain a better understanding of the subject.

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CBSE Class 12 Chemistry Daily Practice Questions for 17 October 2023

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

Question 1: Multiple-Choice Questions

Equimolar solutions in the same solvent have-

(a) Same boiling point but different freezing point

(b) Same freezing point, but different boiling point

(c) Same boiling and same freezing point

(d) Different boiling and different freezing points

Question 2: Very Short Answer Type Question

Give an example of ‘shape-selective catalyst.

Question 3: Short Answer Type Question

To have practical applications, why are cross-links required in rubber?

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Question 4: Case-Based Question

Read the passage given below and answer the following questions

Phenol contains -OH group directly attached to carbon atoms of an aromatic system C6H5OH in phenol the group is attached to sp2 hybridised carbon of aromatic ring. The carbon oxygen bond length is 1:36 pm in phenol is slightly less than that in methanol this is due to first point partial double bond character on account of the conjugation of unshared electron pair of oxygen with the aromatic ring s point sp3 hybridised state of carbon to which oxygen is attached it can be prepared by various means or methods. Some important methods are alkali fusion of sulphonates, hydrolysis of diazonium salts decarboxylation of salicylic acid, and from Grignard reagent, which is prepared from Dow's process and from cumene. Aerial oxidation of human produce cumene peroxide which on hydrolysis produce phenol and acetone.

INSTRUCTIONS: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.

(a) Both assertion and reason are true and the reason is the correct explanation of assertion.

(b) Both assertion and reason are true but the reason is not the correct explanation 32 of assertion.

(c) Assertion is true but reason is false.

(d) Assertion is false but reason is true.

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Question 5: Long Answer Type Question

Give reasons-

(i) Transition metals have high melting points.

(ii) Second and third transition series have similar radii.

(iii) Second ionization is difficult from Cu and Cr whereas it is easy for Zn.

(iv) Most of the transition elements are paramagnetic.

(v) The d1 configuration is very unstable in ions. Why?

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