CBSE Class 12 Chemistry Surface Chemistry Worksheet
1.Bleeding caused by a nick from a razor during shaving can be stopped by rubbing with alum. Why? Ans: Blood is a negatively charged colloidal solution. When alum is rubbed the positively charged Al3+ ions from alum neutralizes the charge on the particles and makes it…
CBSE Class 12 Chemistry Sure Shot Questions Worksheet
1 MARK QUESTIONS 1. What are f-centres? Ans- The free electron trapped in the anionic vacancies are called F-centres. 2. Name one solid in which both frenkel and schottky defects occur. Ans- AgBr 3. Why is vapour pressure of a solution of glucose in water lower than that…
CBSE Class 12 Chemistry Solutions Worksheet
Important Questions for NCERT Class 12 Chemistry Solutions Question. What is the molarity of H2SO4 solution, that has a density 1.84 g/cc at 35°C and contains 98% by weight? (a) 18.4 M (b) 18 M (c) 4.18 M (d) 8.14 M Answer : A Question. The…
CBSE Class 12 Chemistry Solid State Worksheet Set A
Important Questions for NCERT Class 12 Chemistry Solid State Question. Gold has a face centred cubic lattice with an edge length of the unit cube of 407 pm. Assuming the closest packing, the diameter of the gold atom is (a) 576.6 pm (b) 287.8 pm (c) 352.5 pm (d)…
CBSE Class 12 Chemistry Solid State Worksheet Set B
II) Multiple choice questions. 1. Percentage of empty space in a body centre cubic arrangement is a) 74 b) 32 c) 26 d) 68 2.The total no of tetrahedral voids in fcc is a) 6 b) 8 c) 10 d) 12 3. Which of the following statement is/ are not true in the hexagonal…
CBSE Class 12 Chemistry Revision Worksheet
1.‘Stability of a crystal is reflected in the magnitude of its melting point’. Comment. 2.Why does LiCl acquire pink colour when heated in Li vapour? 3.Explain the following terms with a suitable example: a) 12 – 16 compounds b) Ferrimagnetism 4.Write equation for the…
CBSE Class 12 Chemistry Redox Titration Worksheet
CBSE Class 12 Redox Titration. 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…
CBSE Class 12 Chemistry Purification Of Metals Worksheet
CBSE Class 12 Chemistry Purification of Metals. 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.…
CBSE Class 12 Chemistry Principles And Processes Of Isolation Of Elements Worksheet
Question. Calcination is used in metallurgy for removal of (a) moisture (b) water and CO2 (c) CO2 and H2S (d) H2O and H2S Answer : B Question. Which of the following pairs of metals is purified by van Arkel method ? (a) Ga and In (b) Zr and Ti (c) Ag and Au (d) Ni and Fe…
CBSE Class 12 Chemistry Polymers Worksheet
Question. Which of the following is a natural polymer? (a) cis-1, 4-polyisoprene (b) poly (Butadiene-styrene) (c) polybutadiene (d) poly (Butadiene-acrylonitrile) Answer. A Question. The polymer that is used as a substitute for wool in making commercial fibres is (a)…
CBSE Class 12 Chemistry P Block Elements Worksheet
The p-Block Elements Phosphorus The allotropic forms of phosphorus: Phosphorus exists mainly in three allotropic forms – white (yellow) phosphorus, red phosphorus and black phosphorus 1. White phosphorus: It is a translucent white waxy solid. It is…
CBSE Class 12 Chemistry P Block Elements Type Mll Worksheet
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…
CBSE Class 12 Chemistry Organic Compounds Containing Nitrogen Worksheet
Question: The hybridisation and geometry of amines are sp3 and pyramidal respectively due to the presence of a) divalent N-atom b) trivalent N-atom c) monovalent N-aom d) tetravalent N-atom Answer: b Question: Which of the following reactions is…
CBSE Class 12 Chemistry Iupac Nomenclature Worksheet
CBSE Class 12 Chemistry iupac nomenclature. 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…
CBSE Class 12 Chemistry Halo Alkanes And Haloarene Worksheet
MCQ Questions for NCERT CBSE Class 12 Chemistry Halo Alkanes And Haloarene Question. Which of the following has the highest nucleophilicity ? (a) F- (b) OH- (c) CH3- (d) NH2- Answer: C Question. The addition of propane with HOCl proceeds via the addition of (a) H+ in…