Thursday, July 30, 2020

Solutions of worksheet 3, Ch 5, Class 7


Ans 1. Across: (2) Neutral      (4) Basic      (5) Red

           Down: (1)Indicator      (3)turmeric    (5)Acidic    (6)Heat

Ans 2. Solution A - Acidic, Solution B - Basic, solution C - Neutral

Ans3. The effect of antbite is neutralized by rubbing moist baking soda

Ans 4. (a)-III,  (b) -v,   (c)- (iv), (d)- (i),  (e)- (ii)

Ans5. (a)sour, acid

           (b) natural

           (c) magenta(dark pink)

           (d) react with, salt

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