D and f block important questions learninsta
WebJul 7, 2024 · Question 5. A class consists of 21 boys and 9 girls. A student is to be selected for social work. Find the probability that. (i) a girl is selected. (ii) a boy is selected. Solution: Sample space n (S) = 21 + 9 = 30. Number of girls n (E) = 9. WebJul 12, 2024 · Answer. 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. Question.
D and f block important questions learninsta
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WebAug 13, 2024 · 2NaOH + 2F2 → 2NaF + OF2 + H2O. MCQs on The p-Block Elements Class 12 Chemistry. Que 16. Which one of the following oxides is expected to exhibit paramagnetic behaviour. (a) CO2 (b) SO2. (c) ClO2 (d) SiO2. Ans 16: c) Due to unpaired e– ClO2 is paramagnetic. Que 17. Of the following acids, the one that is strongest is. WebDec 6, 2024 · The d- and f-Block Elements Class 12 Important Questions Short Answer Type -I [SA – I] Question 6. Explain the following …
Question 1. How would you account for the increasing oxidising power in the series: V02+ < Cr207 2-< Mn04–? (CBSE Sample Paper 2010) Answer: This is due to the increasing stability of the lower species to which they are reduced. Question 2. Which metal in the first transition series exhibits a +1 … See more Question 1. Assign reasons for the following: (i) Cu(I) Is not known In an aqueous solution. Answer: Because of the Lesser hydration enthalpy of Cu(I), It Is unstable In an … See more Question 1. (i) Transition metals and their compounds are generally found to be good catalysts. (ii) Metal-metal bonding is more frequent for the … See more WebJul 7, 2024 · Question 10. If the diagonals of a rhombus are 12 cm and 5 cm, find the perimeter of the rhombus. Solution: Given: d 1 = 12 cm, d 2 = 5 cm The perimeter = 4 × side = 4 × 6.5 = 26 cm Hence, the perimeter = 26 cm. Mensuration Class 8 Extra Questions Short Answer Type. Question 11. The volume of a box is 13400 cm 3. The area of its …
WebApr 10, 2024 · Work, Energy and Power Class 11 MCQs Questions with Answers. Question 1. A bullet is fired horizontally and gets embedded in a block kept on a table. If the table is frictionless, then. (a) only momentum is conserved. (b) only potential energy is conserved. (c) only K.E. is conserved. (d) both (a) and (b). Question 2.
WebJan 26, 2024 · 8. What did the black population want in the new Constitution? (a) A black President. (b) Substantial social and economic rights. (c) Whites should be turned out of the country. (d) Apartheid for the whites. (b) Substantial social and economic rights. 9. During negotiations for making the Constitution, the whites agreed to.
WebQuestion 1. (a) The interior of a triangle includes its vertices. (b) The triangular region includes the vertices of the corresponding triangle. (c) An equilateral triangle is isosceles also. (d) The sum of the measures of three angles of a triangle is greater than 180°. (e) It is possible to have a triangle in which two of the angles are obtuse. duties of corporate presidentWebD. the problem got over as the storm had passed. 21. What happened after the hand pumps started to block up with the debris floating around the cabins? A. the author connected an electric-pump to an out-pipe B. by taking out water with the help of bucket C. by repairing hand pump D. the author found another hand pump. 22. duties of corporate attorneyWebApr 8, 2024 · The d-block of the periodic table includes group 3 to 12. The elements placed in the group 3 – 12 are called d-block elements. In these elements d-orbitals are … duties of corporate treasurerWeb1 Important Questions for CBSE Class 12 Chemistry – The d- and f- Block Elements. 1.1 PREVIOUS YEARS QUESTIONS; 1.2 2015; 1.3 Very Short Answer Type Questions [1 … in a transamination reactionWebSep 4, 2024 · Answer. Question 12. Fe 3+ ion is more stable than Fe 2+ ion because. (a) more the charge on the atom, more is its stability. (b) configuration of Fe 2+ is 3d 5 while … duties of county clerkWebDec 6, 2024 · The d- and f-Block Elements Class 12 Important Questions Short Answer Type -I [SA – I] Question 6. Explain the following observations : (i) Generally there is an increase in density of elements … duties of corporate secretary and treasurerWebFeb 3, 2024 · 1 Open the Styles and Formatting window. 2. In the document, select an item that has the format you want to adopt as a style. 3. In the Styles and Formatting window, select the style you want to update (single-click, not double-click), then long-click on the arrow next to the New Style from Selection icon and click on Update Style. duties of corporate sales manager