RRB NTPC General Science

RRB NTPC Exam 2016 will test you on your knowledge of Acids and Bases

RRB NTPC Exam 2016 #Daily Infographic on General Science (CHEMISTRY)

RRB NTPC General Science
Created by Logical Nerd

Acid Defined

Substances which increase the concentration of hydrogen ions (H+), or more accurately, hydronium ions (H3O+), when dissolved in water.

Formation of Acids

Acids are formed from the reaction of nonmetal oxides with water.

eg: carbonic acid is formed by reacting carbon dioxide with water.

CO2 (g) + H2O (l) = H2CO3 (aq)

Taste of Acids

They are always sour

  • household vinegar (acetic acid)
  • lemon juice, orange juice or citrus fruit juices (citric acid)
  • Vitamin C (ascorbic acid)
  • Coca-Cola (contains phosphoric acid)

Impact of Acids

Concentrated acids can cause skin burn; care should be taken when handling acids.

Examples of Acids

  • car battery (sulfuric acid)
  • stomach acid (hydrochloric acid)
  • carbonate water (carbonic acid)

Bases Defined

Substances which increase the concentration hydroxide ions (OH ), when dissolved in water.

Formation of Bases

Bases such as LiOH, NaOH, KOH, RbOH and CsOH can be made by reacting the corresponding alkali metals with water.

eg: 2 Li (s) + H2O (l) = 2 LiOH (aq) + H2 (g)

Taste of Bases

They always taste Bitter

  • Milk of Magnesia (magnesium hydroxide)
  • Maalox antacid
    (Magnesium hydroxide and aluminum hydroxide)

Impact of Bases

Concentrated bases can cause skin burn, care should be taken when handling bases;
bases often feel slippery or soapy

Examples of Bases

  • drain cleaner, oven cleaner (sodium hydroxide)
  • cleaning products (ammonia solution)



Helpful Links

How to Prepare General Science Section for RRB NTPC Exam

References: http://nobel.scas.bcit.ca/chem0010/unit10/10.1


  1. In UPSC questions come from both science and technology. Try reading the weekly Science news from ‘The Hindu’ .. It’ ll help you for the technology part. As for core science know your basics. I insist go through ICSE Books Class IX,X, XII, XII and NCERT books.

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