Nature and Composition of Substances

Nature and Composition of Substances

Easy Questions
Moderate Questions

Chemistry

Nature and Composition of Substances
Atomic Structure
Radioactivity
Periodic classification of element
Chemistry in Every Day Life
Biomolecules
Hydrocarbons and Its Derivatives
Non Metals and Their Compounds
Metals and Their Compounds
Surface Chemistry
Electrolytes & Electrochemistry
Solutions
Thermodynamics and Energetics
Catalysis
Properties of Gases
Acids, Bases and Salt
Oxidation and Reduction
Chemical Bonding
Chemistry miscellaneous
  1. Which one of the following laws explain the formation of carbon monoxide and carbon dioxide from carbon and oxygen ?








  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: B

    NA

  1. Which one of the following glasses is used in bullet proof screens?








  1. View Hint View Answer Discuss in Forum

    Reinforced glass is used in bullet proof covers.

    Correct Option: D

    Reinforced glass is used in bullet proof covers.

  1. What is the composition of nitrolim - a chemical fertilizer?








  1. View Hint View Answer Discuss in Forum

    Calcium cyanamide (CaCN2) mixed with carbon (C) is called nitrolim.
    CaC2 + N2 cal.carbide→ CaCN2 + C nitrolim

    Correct Option: D

    Calcium cyanamide (CaCN2) mixed with carbon (C) is called nitrolim.
    CaC2 + N2 cal.carbide→ CaCN2 + C nitrolim

  1. Which of the following chemicals is used in foam fire extinguishers?








  1. View Hint View Answer Discuss in Forum

    Aluminium sulphate is used in 'foam' fire extinguishers, which contains radium bicarbonate and aluminium sulphate in separate receptacles on being mixed they form the foam of bubbles of CO2.

    Correct Option: A

    Aluminium sulphate is used in 'foam' fire extinguishers, which contains radium bicarbonate and aluminium sulphate in separate receptacles on being mixed they form the foam of bubbles of CO2.

  1. Which fertilizer is assimilated directly by the plant ?








  1. View Hint View Answer Discuss in Forum

    Muriate of potash is assimilated directly by the plant.

    Correct Option: C

    Muriate of potash is assimilated directly by the plant.