If four identical resistors, of resistance 8 ohm, are first connected in series so as to give an effective resistance Rs, and then connected in parallel so as to give an effective resistance Rp, then the ratio Rp/Rs is
https://www.youtube.com/watch?v=Z0XB7oLo8ww The question is about resistors connected in series and parallel. It asks for the ratio of the effective resistance when the resistors are connected in series (Rs) to the […]
CBSE Class 10 Science – Chapter 2: Acids, Bases and Salts – Detailed Notes & Explanation
Indicators An indicator is a dye which changes color when it is added to an Acid or a Base. Some major types of acid – base indicators are as follows – Natural […]
Class 10 CBSE Science – Chapter 1: Chemical Reactions & Equations – Detailed Notes & Explanation
Physical and Chemical Changes Physical Change – Physical change is a change in which only some of the physical properties of a substance undergoing change are altered temporarily but the […]
The emission of brown fumes in the given experimental set-up is due to
https://youtu.be/YwyP-bDU6Tk Here is the Explanation: The correct option is (a) thermal decomposition of lead nitrate which produces brown fumes of nitrogen dioxide. When lead nitrate (Pb(NO₃)₂) is heated, it decomposes […]
In the experimental setup given below, it is observed that on passing the gas produced in the reaction in the solution X, the solution X first turns milky and then colourless.
https://youtu.be/V6Hg_xyNO_k The option that justifies the above stated observation is that ‘X’ is aqueous calcium hydroxide and (a) it turns milky due to carbon dioxide gas liberated in the reaction […]
CBSE Class 10 Previous Year Question Papers
Master your CBSE Class 10 exam preparation with official past question papers! This blog page provides a one-stop shop for all your CBSE Class 10 past question paper needs. Download […]
Factoring a Quadratic Expression : Breaking it down
Imagine you have a box full of Legos, and you want to organize them into smaller, more manageable boxes. Factoring a quadratic expression is like that! You take a big, […]
Polynomial x^4 + 7x^3 + 7x^2 + px + q is exactly divisible by x^2 + 7x + 12, then find the values of p and q
Here’s a step-by-step solution with detailed explanations to find the values of p and q: 1. Factor the divisor: 2. Apply the factor theorem: 3. Substitute x = -3: 4. […]
Form a quadratic polynomial, the sum and product of whose zeroes are (−3) and 2 respectively.
Here’s a breakdown of the question in simple language, along with examples: Understanding Zeroes: Sum and Product of Zeroes: Building the Polynomial: Example with Numbers: Key Points: Also Check out […]
Name the functional group present in propanone
The functional group present in propanone is a ketone. Here’s a breakdown of what that means, Think of it like this: Another example of a molecule with a ketone group […]
