Please refer to CBSE Class 12 Chemistry HOTs p Block Elements. Download HOTS questions and answers for Class 12 Chemistry. Read CBSE Class 12 Chemistry HOTs for Unit 7 The p-Block Elements below and download in pdf. High Order Thinking Skills questions come in exams for Chemistry in Class 12 and if prepared properly can help you to score more marks. You can refer to more chapter wise Class 12 Chemistry HOTS Questions with solutions and also get latest topic wise important study material as per NCERT book for Class 12 Chemistry and all other subjects for free on Studiestoday designed as per latest CBSE, NCERT and KVS syllabus and pattern for Class 12
Unit 7 The p-Block Elements Class 12 Chemistry HOTS
Class 12 Chemistry students should refer to the following high order thinking skills questions with answers for Unit 7 The p-Block Elements in Class 12. These HOTS questions with answers for Class 12 Chemistry will come in exams and help you to score good marks
HOTS Questions Unit 7 The p-Block Elements Class 12 Chemistry with Answers
CHAPTER:7, p – BLOCK ELEMENTS
Read the Passage given below and answer the following questions.
Ozone is an unstable, dark blue diamagnetic gas. It absorbs the UV radiations strongly, thus protecting the people on earth from the sun. The use of chlorofluorocarbons (CFC) in aerosol and refrigerator and their subsequent escape into the atmosphere, is blamed for making holes in the ozone layer over the Antartica..Ozone acts as a strong oxidising agent in acidic and alkaline medium. For this property, Ozone is used as a germicide and disinfectant for sterilizing water. It is also used in laboratory for the ozonolysis of organic compounds and in industry for the manufacture of potassium permanganate, artificial silk etc,
The following questions are multiple choice questions. Choose the most appropriate answer.
Question. Ozone acts as an oxidising agent due to
(a) Liberation of nascent oxygen
(b) Liberation of oxygen gas
(c) Both (a) and (b)
(d) None of these
Answer: A
Question. The colour of ozone molecule is
(a) White
(b) blue
(c) pale green
(d) Pale yellow
Answer: B
Question. Which of the following statement is not correct for ozone?
(a) It oxidises lead sulphide
(b) It oxidises KI
(c) It oxidises Mercury
(d) It cannot act as a bleaching agent in dry state.
Answer: D
Question. Ozone reacts with moist iodine gives
(a) HI
(b) HIO3
(c) I2O5
(d) I2O4
Answer: B
1 - MARK QUESTIONS
1. PCl3 fumes in moist air. Why? 1
2. Oxides of P, As, Sb exist as dimers (P4O6, P4O10, As4O6, and As4O10). Why? 1
3. P4O10 is used as dehydrating agent. Why? 1
4. Oxygen and sulphur exhibit –2 oxidation state where as others (Se, Te) exhibit +2 oxidation states. 1
5. Chemical methods are not practicable for the preparation of Fluorine. 1
6. Why H2SO4 is not used for the preparation of HBr from NaBr 1
7. Iodine forms I3 - ion but F2 does not form F3 - ion. Why? 1
8. NH3 has a higher proton affinity than PH3. Explain 1
9. Bleaching of flowers by chlorine is permanent while that by sulphur dioxide is temporary. Why? 1
10. Why does chlorine water loses its yellow colour on standing? 1
2 - MARKS QUESTIONS
11. Oxides of Nitrogen have open chain structure while those of phosphorous have closed chain or cage structure. Why is it so? Illustrate with one structural example for each type of oxide or the oxides of phosphorous have cage structure but not open ones. 2
12. When a moist blue litmus paper is dipped in a solution of hypochlorous acid, it first turns red and then latter gets decolorized. Why? 2
13. Iodine is liberated when KI is added to a solution of Cu2+ ions but Cl2 is not liberated when KCl is added to a solution of Cu2+ ions. Why? Explain. 2
14. State the reasons
i. ClF3 exists but FCl3 does not
ii. BH4 - and NH4 + are isoloble 2
15. Why is it important to add KF in HF and exclude moisture during electrolysis of HF for the preparation of Fluorine ? 2
16. Why SO2 is a better reducing agent in alkaline medium as compared to that in acidic medium ? Explain.
1 Mark Questions
1. Which amongst the following is the strongest oxidizing agent?
ClO4 -, BrO4 -, IO4
2. A student wanted to draw his school building on a glass sheet, which acid he should use?
3. Nitrogen and P give negative ions, while As, Sb and Bi do not. Why?
4. Sea weeds are the sources of which halogen?
5. When NaBr is heated with conc H2SO4 ,Br2 is produced but when NaCl is heated with conc H2SO4, HCl is produced. Why?
6. Which oxo-acid of Phosphorus contains P-P linkage?
7. Out of HClO3 and HClO4, which has lower Pka value and why?
8. Name the acidic hydride of N2?
9. State the difference between the nature of Pi bonds in H3PO3 and HNO3 molecules?
10. Name the gas liberated when Ammonium Nitrate is strongly heated.
11. Give one disproportionation reaction of H3PO3.
CBSE Class 12 Chemistry HOTs The Solid State |
CBSE Class 12 Chemistry HOTs Solutions |
CBSE Class 12 Chemistry HOTs Electrochemistry |
CBSE Class 12 Chemistry HOTs Chemical Kinetics |
CBSE Class 12 Chemistry HOTs Surface Chemistry |
CBSE Class 12 Chemistry HOTs General Principles And Processes Of Isolation Of Elements |
CBSE Class 12 Chemistry HOTs Isolation of Elements |
CBSE Class 12 Chemistry HOTs p Block Elements |
CBSE Class 12 Chemistry HOTs d and f block Elements |
CBSE Class 12 Chemistry HOTs Coordination Compounds |
CBSE Class 12 Chemistry HOTs Haloalkanes And Haloarenes |
CBSE Class 12 Chemistry HOTs Alcohols Phenols And Ethers |
CBSE Class 12 Chemistry HOTs Aldehyde Ketones And Carboxylic Acids |
CBSE Class 12 Chemistry HOTs Animes |
CBSE Class 12 Chemistry HOTs Biomolecules |
CBSE Class 12 Chemistry HOTs Polymers |
CBSE Class 12 Chemistry HOTs Chemistry in Everyday Life |
CBSE Class 12 Chemistry HOTs Answers to HOTs Question Database |
HOTS for Unit 7 The p-Block Elements Chemistry Class 12
Expert teachers of studiestoday have referred to NCERT book for Class 12 Chemistry to develop the Chemistry Class 12 HOTS. If you download HOTS with answers for the above chapter you will get higher and better marks in Class 12 test and exams in the current year as you will be able to have stronger understanding of all concepts. High Order Thinking Skills questions practice of Chemistry and its study material will help students to have stronger understanding of all concepts and also make them expert on all critical topics. You can easily download and save all HOTS for Class 12 Chemistry also from www.studiestoday.com without paying anything in Pdf format. After solving the questions given in the HOTS which have been developed as per latest course books also refer to the NCERT solutions for Class 12 Chemistry designed by our teachers. We have also provided lot of MCQ questions for Class 12 Chemistry in the HOTS so that you can solve questions relating to all topics given in each chapter. After solving these you should also refer to Class 12 Chemistry MCQ Test for the same chapter
You can download the CBSE HOTS for Class 12 Chemistry Unit 7 The p-Block Elements for latest session from StudiesToday.com
Yes, the HOTS issued by CBSE for Class 12 Chemistry Unit 7 The p-Block Elements have been made available here for latest academic session
HOTS stands for "Higher Order Thinking Skills" in Unit 7 The p-Block Elements Class 12 Chemistry. It refers to questions that require critical thinking, analysis, and application of knowledge
Regular revision of HOTS given on studiestoday for Class 12 subject Chemistry Unit 7 The p-Block Elements can help you to score better marks in exams
Yes, HOTS questions are important for Unit 7 The p-Block Elements Class 12 Chemistry exams as it helps to assess your ability to think critically, apply concepts, and display understanding of the subject.