CHAPTER 02- ACIDS, BASES AND SALTS WORKSHEET (1)

VIGYAN
CHAPTER 02- ACIDS, BASES AND SALTS WORKSHEET (1)
CHAPTER 02- ACIDS, BASES AND SALTS WORKSHEET (VOLUME-1) TIME:20MIN MM=16 Very short answers type questions (2*3=6) Write the name of acids present in tomato, tamarind, curd, lemon …………………………………………………………………………………………………………………………………………………… ……………………………………………… Why does dry HCl gas not change the color of dry litmus paper? …………………………………………………………………………………………………………………………………………………… ……………………………………………… A milkman adds a small amount of baking soda to fresh milk. Why does this milk take a long time to set as curd? …………………………………………………………………………………………………………………………………………………… ……………………………………………… Short answers type questions (3*2=6) A student dropped a few pieces of marble in dilute hydrochloric acid in a test tube. He observed brisk effervescence. a) Name the gas evolved. ………………………………………………………………………………………………… b) How will you test the gas? ………………………………………………………………………………………………… c) Write a balanced chemical e…