 # Riddles 8

Puzzle 1: Imagine you’re in a room that is filling with water. There are no windows or doors. How do you get out? Puzzle 2: The more you take, the more you leave behind. What are they? Puzzle 3: What two keys can’t open any door? Puzzle 4: What invention lets you look right through a wall? Share Tweet Read more about Riddles 8[…] # Concepts related to two circles

Let C1, C2 be the centers and r1, r2 be the radii of two circles S = 0 and S’ = 0 respectively. Further represents the line segment from C1 to C2. The following cases arises with regard to the relative position of two circles. 1. C1 + C2 > r1 + r2 In this Read more about Concepts related to two circles[…] # Math Puzzle 8 [With Answers]

Puzzle 1: How can these be equal? In which meaning 1070 = 1110? Answer: 10 hours 70 minutes equals 11 hours 10 minutes. Puzzle 2: If 5, 3, 2 = 151022 9, 2, 4 = 183652 8, 6, 3 = 482466 5, 4, 5 = 202541 Then, 7, 2, 5 =? Answer: It is in the form of (a Read more about Math Puzzle 8 [With Answers][…] Surface chemistry: Deals with phenomena that occur at the surfaces or interfaces Adsorption: ⇒ Surface phenomenon ⇒ Accumulation of molecular species at the surface ⇒ Adsorbate: the substance that accumulates at the surface ⇒ Adsorbent: the material on the surface of which adsorption occurs. ⇒ Adsorption α Surface Area Desorption: The process of removing an Read more about Adsorption[…] # Gauss Law

Statement: The gauss’s theorem states that the total electric flux through any closed surface is equal to times the net charge enclosed by the surface. Total electric flux = x Net charge . . The circle on the integral means that the surface S is closed. The net charge means the algebraic sum of the Read more about Gauss Law[…] # Common Tangents

Now we discuss the number of common tangents that exist for the cases specified in the section. Case (i): Each of the given pair of circles lies in the exterior of the other i.e. C₁C₂ > r₁ + r₂. Sub case (i): r₁ ≠ r₂ (r₁, r₂ are radii of the circles)In this case, there Read more about Common Tangents[…] # Brain Teaser 8 [With Answers]

Puzzle 1: Replace one letter in each step to change the word COLD to its opposite. Each step has to be a legitimate word. COLD ? ? ? ? Answer: WARM Explanation: COLD CORD WORD WORM WARM Puzzle 2: Fill in the sequence: ND, JF, MA, ?, ?, SO Answer: MJ and JA Explanation: “ND” is for November & December, Read more about Brain Teaser 8 [With Answers][…] # Temperature dependence of the rate of a reaction

1. Effect of temperature on reaction rate: ⇒ As the temperature increases, the average energy of the reaction increases, hence rate of reaction increases. ⇒ As a common rule, for every 10° rise of temperature, the rate of reaction will increase by 2 (or) 3 times of initial value. ⇒ According to Arrhenius concept: η Read more about Temperature dependence of the rate of a reaction[…] # Brain Teaser 8

Puzzle 1: Replace one letter in each step to change the word COLD to its opposite. Each step has to be a legitimate word. COLD ? ? ? ? Puzzle 2: Fill in the sequence: ND, JF, MA, ?, ?, SO Puzzle 3: Fill in the blanks in the following sentence with an anagram: Almost a ________ started Read more about Brain Teaser 8[…]