Water is an example of

  • acid
  • base
  • amphoteric substance
  • salt

What is the cause of an unpleasant fishy odor?

  • amines
  • sea water
  • dirt
  • worms

What is the term used for a salt containing a replaceable OH group?

  • basic salt
  • common salt
  • acid salt
  • normal salt

Which of the following decreases when pH is less than 7?

  • [H+]
  • [OH-]
  • [O-]
  • [O+]

What is the pH of the carrot?

  • 5.5 - 7.0
  • 6.5 - 7.0
  • 6.0 - 7.5
  • 6.5 - 7.5

Which of the following is used in soap making and drain cleaners?

  • sodium hydroxide
  • potassium hydroxide
  • calcium hydroxide
  • magnesium hydroxide

The solution becomes acidic when pH is

  • greater than 7
  • less than 7
  • greater than 6
  • less than 6

Citric acid converts amines to

  • nitric acid
  • non-volatile salts
  • hydrochloric acid
  • sulphuric acid

What happens when a solution becomes acidic?

  • [H+] increases
  • [H+] decreases
  • [OH-] increases
  • [OH-] decreases

What is the color of Phenolphthalein in acidic solution?

  • red
  • yellow
  • blue
  • colorless

What is the color of Bromothymol blue in acidic solution?

  • red
  • yellow
  • blue
  • colorless

During etching, a piece of metal or glass is covered with

  • acid
  • base
  • wax
  • water

What is formed when the replaceable hydrogen atoms in acid are completely or partially replaced by metal atoms?

  • water
  • amphoteric substance
  • base
  • salt

Which of the following is used in liquid soap and shaving cream?

  • sodium hydroxide
  • potassium hydroxide
  • calcium hydroxide
  • magnesium hydroxide

What is the pH of distilled water?

  • 5
  • 6
  • 7
  • 8

What is the color of Bromothymol blue in basic solution?

  • yellow
  • blue
  • pink
  • colorless

Taste of base is

  • sour
  • sweet
  • bitter
  • it is tasteless

What is the pH of saliva?

  • 6
  • 7
  • 8
  • 9

Taste of acid is

  • sour
  • sweet
  • bitter
  • it is tasteless

Considering the methods for making salt, the reaction of acid and metal gives

  • salt and water
  • salt and hydrogen
  • salt, carbon dioxide and water
  • salt and salt

What is the pH of the soapy solution?

  • 8
  • 9
  • 10
  • 12

The water molecule that donates a proton becomes a

  • negatively charged hydroxide ion
  • negatively charged oxygen ion
  • negatively charged hydrogen ion
  • positively charged hydronium ion

What is the pH of tomato juice?

  • 4
  • 7
  • 8
  • 9

What is the color of methyl red in acidic solution?

  • red
  • yellow
  • blue
  • colorless

Considering Bronsted-Lowery theory, a base is a

  • proton acceptor
  • electron acceptor
  • proton donor
  • electron donor

NaHSO4 is a/an

  • basic salt
  • common salt
  • acid salt
  • normal salt

What is the effect of acid on blue litmus paper?

  • it remains blue
  • it turns pink
  • it turns red
  • it becomes colorless

What is the color of methyl orange in the soap solution?

  • red
  • yellow
  • blue
  • pink

The first successful theory of acids and bases was proposed by

  • J.N Bronsted
  • Svante Arrhenius
  • T.M lowery
  • G.N Lewis

What is the color of Phenolphthalein in a basic solution?

  • yellow
  • blue
  • pink
  • colorless
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