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❓ Theorem Let p p  be a prime number. If p p  divides a 2 a^2 , then p p  also divides a a , where a a  is a positive integer. 🖼️ Solution Ima…

❓ Concept Question How do we calculate percentage dissociation using van’t Hoff factor? 🖼 Concept Image ✍️ Short Concept This concept is based on:…

❓ Question The percentage dissociation of a salt: M X 3 MX_3 solution at a given temperature is to be calculated. Given: van’t Hoff factor  i = 2…

❓ Concept Question How do we calculate EMF after: 👉 Electrolysis changes ion concentrations 👉 Two half-cells are connected to form an electroc…

❓ Question 1 faraday electricity was passed through: C u 2 + ( 1.5 M , 1 L ) / C u Cu^{2+}(1.5M, 1L)/Cu A g + ( 0.2 M , 1 L ) / A g Ag^+(0.2M…

❓ Theorem Fundamental Theorem of Arithmetic Every composite number can be expressed (factorised) as a product of prime numbers, and this factoris…

❓ Question There is a circular path around a sports field. Sonia takes 18 minutes to drive one round of the field, while Ravi takes 12 minutes fo…

❓ Question Explain why: 7 × 11 × 13 + 13 7 \times 11 \times 13 + 13 and 7 × 6 × 5 × 4 × 3 × 2 × 1 + 5 7 \times 6 \times 5 \times 4 \times 3 \tim…

❓ Question Check whether: 6 n 6^n can end with the digit 0 0  for any natural number n n . 🖼️ Solution Image ✍️ Short Solution This is a p…