CBSE Class 12 Chemistry Daily Practice Questions 12 October 2023

CBSE Class 12 Chemistry Daily Practice Questions for 12 October 2023: Students can get good scores in CBSE Class 12 chemistry exam if they practice the questions on a daily basis. By solving CBSE Class 12th Chemistry practice questions, students can gain a deeper understanding of topics and knowledge of the exam format. Students should check CBSE Class 12 Chemistry Topic-Wise Weightage 2024andprepare a list of chemistry chapters that they are best at. They must be practicing more and questions from chapters that require improvement. 

Also Check | CBSE Class 12 Chemistry Daily Practice Questions 11 October 2023

CBSE Class 12 Chemistry Daily Practice Questions for 12 October 2023

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

Question 1: Multiple-Choice Questions

Which of the following is not true about the ionic solids?

(A) Bigger ions form the close packed structure.

(B) Smaller ions occupy either the tetrahedral or the octahedral voids depending upon their size.

(C) Occupation of all the voids is not necessary.

(D) The fraction of octahedral or tetrahedral voids occupied depends upon the radii of the ions occupying the voids.

Question 2: Very Short Answer Type Question

Which point defect in crystals does not alter the density of the relevant solid? (Delhi) 2009

Question 3: Short Answer Type Question

What is the structural difference between HDP and LDP? How does the structure account for different behaviour and nature, hence using a polymer?

Question 4: Case-Based Question

There are two broad types of polymerization reactions, i.e., the addition or chain growth polymerization and condensation or step growth polymerization. In the addition polymerization, the molecules of the same monomer or different monomers add together on a large scale to form a polymer. The monomers used are unsaturated compounds, e.g., alkenes, alkadienes and their derivatives. This mode of polymerization leads to an increase in chain length and chain growth can take place through the formation of either free radicals or ionic species while condensation polymerization generally involves a repetitive condensation reaction between two bi-functional or trifunctional monomeric units. These polycondensation reactions may result in the loss of some simple molecules as water, alcohol, hydrogen chloride, etc. and lead to the formation of high molecular mass condensation polymers.

In these reactions, the product of each step is again a bi-functional species and the sequence of condensation goes on. Since, each step produces a distinct functionalized species and is independent of each other, this process is also called step growth polymerization.

(i) Give one example of chain growth polymer.

(ii) Write the monomer units of bakelite.

(iii) Why are rubbers called elastomers?

(iv) What do you understand by addition polymers?

(v) Mention which of the following are addition polymers:

Question 5: Long Answer Type Question

Synthetic polymers do not degrade in the environment for a long time. How can biodegradable synthetic polymers be made? Differentiate between biopolymers and biodegradable polymers and give examples of each type.

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