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November 27, 2020 0 Comments

QUIZ 13

ylliX - Online Advertising Network

Chemistry 3

Which one of the following is the softest?
- Aluminium
- Sodium
- Iron
- Lithium
Salts of which of the following elements provide colours to fireworks?
- Strontiurn and barium
- Potassium and mercury
- Chromium and nickel
- Zinc and sulphur
In which type of rocks are metals like Gold and Copper mostly found?
- Old metamorphic
- New metamorphic
- Old sedimentary
- Old igneous
In coloured galss. the purple colour is imparted by
- Manganese oxide
- Selenium sulphide
- Ferric oxide
- Cadmium sulphide
The vinegar is a solution of
- 15% acetic acid in water
- 5% acetic acid in water
- 50% acetic acid in water
- 10% acetic acid in water
The element which shows least metallic character is
- Indium
- Boron
- Aluminium
- Gallium
The property of fluidity is absent in
- Gases
- None of these
- Solids
- Liquids
Uranium eventually decays into a stable isotope of
- Thorium
- Polonium
- Radium
- Lead
Wood is the main raw materials for the manufacture of
- Gun powder
- Paint
- Ink
- Paper
Nitrogen combines with metal to form
- Nitrosyl chloride
- Nitride
- Nitrite
- Nitrate

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