english pre board paper 2022 class 10 full solutions mp board

Rajasthan board physics model paper 2022

Rajasthan board physics model paper 2022

Four students A, B, C and D of Class X measured the pH of the given samples of distilled water, 0.1 M solution of ethanoic acid, 0.1 M solution of hydrochloric acid and 0.1 M solution of sodium hydroxide using pH papers at 298 K. Tell which one of the following represents a correct measurement?

11th class English model paper solution

Rekha has to cover a board in her class with a piece of red paper. The board is rectangular in shape. The length of the board is 7 units more than thrice its breadth. Answer the following. a. If the breadth is p, find the rule for finding the area of the piece of red paper that Rekha needs to cover the board with. b. Use the rule to find the required area of the paper, given that the breadth of the board is 40 cm.