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Earn 100

An organic compound containing C, H and O gave on analysis C – 40% and H – 6.66%. Its empirical formula would be:

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Important Questions on General Concepts of Chemistry

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General Science for Competitive Exams>Chapter 15 - General Concepts of Chemistry>EXERCISE>Q 32
Slow eating away of iron articles in the presence of moist air is called: 
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IMPORTANT
General Science for Competitive Exams>Chapter 15 - General Concepts of Chemistry>EXERCISE>Q 33
Which of the following reaction is endothermic?
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General Science for Competitive Exams>Chapter 15 - General Concepts of Chemistry>EXERCISE>Q 34
The observation that does not indicate a chemical reaction is:
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General Science for Competitive Exams>Chapter 15 - General Concepts of Chemistry>EXERCISE>Q 35
Which one of the following is not an exothermic reaction? 
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General Science for Competitive Exams>Chapter 15 - General Concepts of Chemistry>EXERCISE>Q 36
Which of the following statement is not correct? To prevent food from getting rancid, we:
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General Science for Competitive Exams>Chapter 15 - General Concepts of Chemistry>EXERCISE>Q 37

In the following questions:

Na2CO3 + xHCl → 2NaCl + CO2 + H2O, the value X of is: 

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IMPORTANT
General Science for Competitive Exams>Chapter 15 - General Concepts of Chemistry>EXERCISE>Q 38
Which of the following is not an endothermic process?
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IMPORTANT
General Science for Competitive Exams>Chapter 15 - General Concepts of Chemistry>EXERCISE>Q 39
Rusting of iron is an example of_____.