#1. Acidic substance taste …….
#2. Basic substance taste …….
#3. Feed soapy on touching ……. types of substance.
#4. Substances that show different colour in acidic, basic and neutral solution are called ……
Write name of three naturally occurring indicators.
#8. Litmus is extracted from ……..
#9. Litmus has a ……. colour in distilled water.
#10. Litmus turns ……. color when added to a basic solution.
#11. Litmus turns ……. color when added to a acidic solution.
#12. litmus paper are available in …… colour.
#13. Solution which do not change the color of litmus are known as ……… solution.
#14. When turmeric paper added to an acidic solution, it turns ……. color.
#15. When turmeric paper added to an basic solution, it turns ……. color.
#16. China rose indicator turns acidic solution to …….. color.
#17. China rose indicator turns basic solution to …….. color.
#18. Phenolphthalein gives a …… colour when solution is basic.
#19. Phenolphthalein gives a …… colour when solution is acidic.
#20. The reaction between an acid and a base is known as ………
Acid + Base => ……A…… + …..B…….
#23. In a neutralization process, what is evolved?
#24. Write the name of antacid that is used to neutralize the acidity of the stomach.
#25. Ant bites inject …….. acid into the skin.
#26. The effect of an ant bite can be neutralised by rubbing moist ………..
#27. When the soil is too acidic, it is treated with base like ………
#28. When the soil is too basic, it is treated with ………
#29. Substances which are neither acidic nor basic are called ……….
Hydrochloric acid + sodium hydroxide => …..A…..+…..B…..
#35. Tooth decay is caused by the presence of a …..