ASSERTION: Phenolphthalein turns base into pink REASON: phenolphthalein is an indicator
Both are true and R is correct explanation for A
20
An ant bit Snehal. He immediately rushed into the kitchen and applied something to get relief from the same. What ingredient might Snehal have used from the kitchen?
Baking Soda
10
Name any three natural indicators
Turmeric, Litmus and China rose petals
10
To relieve indigestion we take an antacid named as
Milk of Magnesia (Magnesium Hydroxide)
10
Explain Neutralisation reaction
Acid+Base-->Salt+water (Heat is evolved)
10
Name the acid in Grapes, Tamarind and unripe mangoes
Tartaric acid
10
Name the acid in milk and curd
Lactic acid
10
Name the acid in Spinach
Oxalic acid
10
Name any two mineral acids
Hydrochloric acid (HCl), and nitric acid (HNO3).
10
HCl + NaOH -->
NaCl + H2O
10
Examples for Neutralisation in everyday life
Indigestion, Soil Treatment, Factory waste and Ant Bite
10
Any two difference between Acid and Base
Acid : (i) It is sour in taste (ii) It turns blue litmus red Base: (i) It is bitter in taste (ii)It turns red litmus blue
