Chemistry - MOST IMPORTANT Junior Executive Previous Year Questions
Practice real questions from previous year exams of Junior Executive.
📘 Discoveries📚 Misc
Q1
Antoine Laurent Lavoisier was well known for his discovery of:
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📘 Important Chemical Compounds📚 Sodium Hydroxide
Q2
Copper sulphate and caustic soda are used to test the presence of which of the following?
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📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Non-metals and its properties
Q3
Which of the following is a non-metal required by the human body?
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📘 Acids, Bases and Salts📚 pH Scale
Q4
What is the healthy pH range for a human body?
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📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Metals and its properties
Q5
Which is the only metal whose natural form is liquid?
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📘 Chemical Reactions📚 Combustion Reaction
Q6
Substances like phosphorus burns in air at room temperature. This type of combustion in which a material suddenly bursts into flames, without application of any apparent cause, is called ______
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