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Worksheet for Class 12 Chemistry Unit 7 The p-Block Elements
Class 12 Chemistry students should refer to the following printable worksheet in Pdf for Unit 7 The p-Block Elements in Class 12. This test paper with questions and answers for Class 12 will be very useful for exams and help you to score good marks
Class 12 Chemistry Worksheet for Unit 7 The p-Block Elements
CBSE Class 12 Chemistry p block elements type MLL. CBSE issues sample papers every year for students for class 12 board exams. Students should solve the CBSE issued sample papers to understand the pattern of the question paper which will come in class 12 board exams this year. The sample papers have been provided with marking scheme. It’s always recommended to practice as many CBSE sample papers as possible before the board examinations. Sample papers should be always practiced in examination condition at home or school and the student should show the answers to teachers for checking or compare with the answers provided. Students can download the sample papers in pdf format free and score better marks in examinations. Refer to other links too for latest sample papers.
MCQ Questions for NCERT CBSE Class 12 Chemistry P Block Elements
Question. Nitrogen forms N2 but Phosphorous is converted into P4 from Phosphorous, the reason is
(a) Triple bond is present between Phosphorous atom
(b) Pπ-Pπ bonding is strong
(c) Pπ-Pπ Bonding is weak
(d) Multiple bonds are formed easily
Answer: C
Question. Partial hydrolysis of XeF4 gives
(a) XeO3
(b) XeOF2
(c) XeOF4
(d) XeF2
Answer: B
Question. What is the correct order of reactivity of group 16 elements?
(a) O > Se > S > Tè > Po
(b) S > O > Tè > Po > Se
(c) S > O > Se > Tè > Po
(d) O > S > Se > Tè > Po
Answer: D
Question. Matching type questions – Match the entries of column I with appropriate entries of column II and choose the correct option out of the four options (a), (b), (c) and (d) given at the end of each question
(a) A-r, B-s, C-q, D-p
(b) A-r, B-q, C-p, D-s
(c) A-p, B-s, C-q, D-r
(d) A-s, B-p, C-r, D-q
Answer: A
Question. In which of the following sulphur is present in +5 oxidation state?
(a) Di thionic acid
(b) Sulphurous acid
(c) Sulphuric acid
(d) Disulphuric acid
Answer: A
Question. Which of the following statements regarding group 16 elements is not true?
(a) The electronic configuration of Oxygen is [He]2s22p4
(b) The electronic configuration of Sulphur is [Ne]3s23p4
(c) The atomic radii of the elements of group 16 are larger than those of the corresponding elements of group 15.
(d) The electronic configuration of Tellurium is [Kr]4d105s25p4
Answer: C
Question. H2S is more acidic than H2O because
(a) oxygen is more electronegative than sulphur.
(b) atomic number of Sulphur is higher than oxygen.
(c) H — S bond dissociation energy is less as compared to H — O bond.
(d) H — O bond dissociation energy is less also compared to H — S bond
Answer: B
Question. Interhalogen compounds are more reactive than individual halogens because
(a) They are prepared by direct combination of halogens
(b) X-X" bond is weaker than X-X and X”-X” bond
(c) They are thermally more stable than Halogens
(d) There is large difference in their electronegativity
Answer: D
Question. The set with correct order of acidity is
(a) HClO < HClO2 < HClO3 < HClO4
(b) HClO4 < HClO3 < HClO2 < HClO
(c) HClO < HClO4 < HClO3 < HClO2
(d) HClO4 < HClO2 < HClO3 < HClO
Answer: A
Question. Fluorine differs from rest of the halogens in some of its properties. This is due to
(a) its smaller size and high electronegativity.
(b) lack of d-orbitals.
(c) low bond dissociation energy
(d) All of the these
Answer: B
Question. A gas (X) is obtained when Copper reacts with dilute nitric acid. The gas thus formed reacts with oxygen to give brown fumes of (Y). (Y) when dissolved in water gives an important acid (Z) and the gas (X).X, Y and Z respectively are
(a) Nitrogen monoxide, Nitrogen dioxide, Nitric acid.
(b) Nitrogen dioxide, Nitrogen monoxide, Nitric acid.
(c) Nitrous oxide, Nitrogen monoxide, Nitrous acid.
(d) Nitrogen monoxide, Nitrous oxide, Nitric acid.
Answer: A
Question. What happens when white phosphorous is heated at 473 Kelvin under high pressure?
(a) α-Black phosphorous is formed
(b) β-Black phosphorous is formed
(c) Red Phosphorous is formed
(d) No change is observed
Answer: B
Question. If Chlorine is passed through a solution of Hydrogen sulphide in water, the solution turns turbid due to the formation of
(a) Free chlorine
(b) Free sulphur
(c) Nascent Oxygen
(d) Nascent Hydrogen
Answer: B
Question. In BrF3 (bromine trifluoride) molecule the lone pairs occupy equatorial positions to minimize -
(a) lone pair –bond pair repulsions only
(b) bond pair-bond pair repulsions only
(c) lone pair-lone pair and lone pair-bond pair repulsions
(d) lone pair-lone pair repulsions only
Answer: C
Assertion Reason Based Question :
(a) If both assertion and reason are correct and reason is the correct explanation of the assertion
(b) If both assertion and reason are correct but reason is not the correct explanation of the assertion.
(c) If assertion is correct but reason is the wrong statement.
(d) If both the assertion and reason are incorrect.
Question. Assertion: Dinitrogen is less reactive than Phosphorous.
Reason: Nitrogen has more electron gain enthalpy than phosphorous.
Answer: C
Question. Assertion: HI cannot be prepared by the reaction of KI with concentrated sulphuric acid.
Reason: HI has lowest H-X bond strength among halogen acids.
Answer: B
One Mark questions
1. Why is H3PO3 diprotic?
2. Nitrogen does not form pentahalide like phosphorous,why?
3. H2O is a liquid while H2s is a gas ,why?
4. Arrange NH3 PH3 AsH3 BiH3 SbH3 in the increasing order of basic strength.
5. Oxygen is a gas while sulphur is a solid,why?
6. Write the formula of hyponitros acid.
7. Why does Al not react with conc.nitricacid?
8. Can PCl5 act as an oxidising agent and reducing agent?
9. Why does NO2 readily dimerise?
10. Why is BiH3 the strongest reducing agent amongst all the hydrides of nitrogen family?
11. Write the chemical formula of peroxodisulphuric acid.
12. Why does NH3 act as a Lewis base /complexing agent?
13. What is the basicity of H3PO4?
14. Why does R3P = O exist but R3N = O does not (R = alkyl group)?
15. Why does the reactivity of nitrogen differ from phosphorus?
16. Why is white phosphorous highly reactive?
17. Why group 16 members are called chalcogens?
18. OF4 is not known but SF4 is known .Explain
19. Solid PCl5 exists as an ionic solid,Why?
20. Bismuth is a strong oxidizing agent in pentavalentstate,why?
Please click the link below to download full pdf file for CBSE Class 12 Chemistry p block elements type MLL.
CBSE Class 12 Chemistry Solid State Worksheet Set A |
CBSE Class 12 Chemistry Solid State Worksheet Set B |
CBSE Class 12 Chemistry The Solid State Worksheet |
CBSE Class 12 Chemistry Solutions Worksheet |
CBSE Class 12 Chemistry Chemical Kinetics Worksheet |
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CBSE Class 12 Chemistry Principles And Processes Of Isolation Of Elements Worksheet |
CBSE Class 12 Chemistry P Block Elements Type Mll Worksheet |
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CBSE Class 12 Chemistry Haloarenes Worksheet |
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CBSE Class 12 Chemistry Biomolecules Worksheet |
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CBSE Class 12 Chemistry Unit 7 The p-Block Elements Worksheet
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Worksheet for Chemistry CBSE Class 12 Unit 7 The p-Block Elements
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Unit 7 The p-Block Elements worksheet Chemistry CBSE Class 12
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Unit 7 The p-Block Elements CBSE Class 12 Chemistry Worksheet
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Worksheet for CBSE Chemistry Class 12 Unit 7 The p-Block Elements
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