Puzzle 1: What number or numbers comes next in this series?Puzzle 2: Suppose today is Thursday. What day of the week will it be 19 days from today? Puzzle 3: What is the odd one out?Puzzle 4: What is the factorial of 5? A. 1 B. 60 C. 120 D. 180 Puzzle 5: The average of three numbers is 29. Read more about Logic Puzzles 2[…]
A function f(x) is said to be continuous, if it is continuous at each point of its domain.Everywhere continuous function: A function f(x) is said to be everywhere continuous if it is continuous on the entire real line (-∞, ∞) i.e. On R. Some fundamental results on continuous functions: Here, we list some fundamentals result Read more about Continuous functions[…]
Puzzle 1: What replaces the question mark? 4 + 7 + 2 = 281435 7 + 3 + 9 = 212781 6 + 2 + 7 = 121456111111 2 + 8 + 5 = 164036 8 + 4 + 6 =? Answers: 8 + 4 + 6 (8 * 4) = 32 and (4 * 6) = 24. Read more about Math Puzzles 5 (With Answers)[…]
Qualitative chemical analysis deals with the identification of elements or grouping of elements present in a sample. Detection of Carbon and Hydrogen: Carbon and hydrogen are detected by heating the compound with copper (II) oxide. Carbon present in the compound is oxidised to carbon dioxide (tested with lime-water, which develops turbidity). C + 2CuO → 2Cu + CO₂ CO₂ Read more about Qualitative Analysis of Organic Compounds[…]
1. Manometer: A manometer is a tube open at both the ends and bent into the shape of a “U” and is partially filled with mercury. When one end of the tube is subjected to an unknown pressure p, the mercury level drops on that side of the tube and rises on the other so Read more about Pressure Measuring Devices[…]
Puzzle 1: What replaces the question mark? 4 + 7 + 2 = 281435 7 + 3 + 9 = 212781 6 + 2 + 7 = 121456 2 + 8 + 5 = 164036 8 + 4 + 6 =? Puzzle 2: What replaces the question mark? 56 3 49 27 18 74 62 19 8 35 65 Read more about Math Puzzles 5[…]
Puzzle 1: What never asks questions but is often answered? Answer: A doorbell. Puzzle 2: What belongs to you but other people use it more than you? Answer: Your name. Puzzle 3: I have a large money box, 48 centimeters square and 42 centimeters tall. Roughly how many coins can I place in my empty money box? Answer: Just one, after which it will Read more about Riddles 3 (With Answers)[…]
Angle between Line and a Plane: The angle between a line and a plane is the complement of the angle between the line and normal to the plane. Thus, if θ is the angle between a lines .And the plane ax + by + cz + d = 0. Then, the angle between the normal Read more about Intersection of Line and Plane[…]
Physical properties: Physical properties are smaller to alkenes and alkanes. First three are gases, next eight are liquids and higher ones are solids. These are insoluble in water and soluble in organic solvents. Chemical properties: a) Acidic character of acetylene: Acetylene reacts with sodamide to form sodium acetylide with liberation of hydrogen gas. HC ≡ Read more about Properties & Acidic Character of Acetylene, Addition Reactions- of Hydrogen, Halogen, Hydrogen Halides and Water[…]
Riddle 1: What never asks questions but is often answered? Riddle 2: What belongs to you but other people use it more than you? Riddle 3: I have a large money box, 48 centimeters square and 42 centimeters tall. Roughly how many coins can I place in my empty money box? Riddle 4: What does this mean? I RIGHT I Riddle Read more about Riddles 3[…]