Acids and Bases Basics

A solution turns red litmus blue, its pH is likely to be

• 1

• 5

• 4

• 10

Medicines used for treatment of indigestion

• antibiotic

• antacid

• analgesic

• antiseptic

Common name of CaOCl2

• Washing powder

• baking powder

• bleaching powder

• plaster of paris

Not a acidic salt

• CuSO4

• NH4Cl

• FeCl3

• CH3COONa

Curd can be stored in

• brass vessel

• copper vessel

• steel

• bronze

Egg shell is made up of

• CaCO3

• CaO

• Ca(OH)2

• CaCl2

Tags

NGSS.MS-PS1-1

Calcium phosphate is present in tooth enamel. Its nature is-

• basic

• acidic

• neutral

• amphoteric

An acid can react with

• AgCl
• Na2CO3
• PbSO4
• Na2SO4

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What range of values on the pH scale represent solutions with a higher ratio of hydroxide (OH^-) ions?

• below 7

• 7

• above 7

• 0-14

When found in food, acids often taste ________.

• Sour

• Bitter

• Salty

• Slippery