ACIDS, BASES AND SALTS (VII)

Acids are ______ in taste while bases are _________

• Sour, bitter

• Bitter, sour

• Sour, sweet

• Bitter, sweet

Which of the following is not a natural occuring indicator ?

• Turmeric

• China rose

• Phenolphthalein

• Litmus

Litmus is extracted from _______.

• Lemon

• Fungi

• Legume

• Lichens

Anshuman stained his handkerchief with turmeric. His handkerchief turned ________ when he rubbed soap on it.

• Yellow

• Red

• Green

• Blue

Tags

NGSS.MS-PS1-2

China rose indicator gives green colour for the following test solutions.

• Milk of magnesia

• Baking soda

• Lime water

• All of the above

Excessive hydrochloric acid in stomach leads to indigestion. Antacid such as __________________________ neutralised the effect of excessive acid and relieves pain.

• Baking soda or Sodium hydrogen carbonate

• Lime water or slaked lime

• Milk of magnesia or magnesium hydroxide

• None of the above

Ammonia is found in many household items such as window cleaners. It turns red litmus blue. What is its nature ?

• Neutral

• Basic

• Acidic

• None of the above

Nitric acid turns

• Red litmus blue

• Blue litmus red

Ouick lime is added to ________ soil while, organic matter is added to ________ soil.

• Acidic, basic

• Basic, acidic

Tags

NGSS.MS-PS1-2

Sodium hydroxide and hydrochloric acid neutralises the effect of each other. Tick the products of neutralization reaction.

• Salt

• Water

• Heat

• All of the above