acid and base

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

• 1

• 4

• 5

• 10

A solution reacts with crushed egg shell to give a gas the terms lime water milky the solution contains

• NaCl

• HCl

• LiCl

• KCL

In terms of acidic strength which one of the following is the correct increasing order

• Water- Acetic Acid -hydrochloric acid

• Water- hydrochloric acid -acetic acid

• Acetic Acid- water -hydrochloric acid

• Hydrochloric acid -water -acidic acid

Tomato is natural source of which acid

• Acetic acid

• Citric acid

• Tartaric acid

• Oxalic acid

At what temperature Is gypsum heated to form plaster of Paris

• 90C

• 100C

• 110 C

• 120

How many water molecule does hydrated calcium sulphate contain

• 5

• 10

• 7

• 2

Sodium carbonate is basic salt because it is a salt of a

• Strong acid and strong base

• Weak acid and weak base

• Song acid and weak base

• Weak acid and strong base

Lime water reacts with chlorine to give

• Bleaching powder

• Baking powder

• Baking soda

• Washing soda

Sodium Hydroxide is used

• As an antacid

• In manufacturer of soap

• Aise cleaning agent

• In alkaline batteries

When copper oxide and dilute hydrochloric acid react colour changes to

• White

• Blueish green

• Blue black

• BlackBlack