General Science for Competitive Exams>Chapter 15 - General Concepts of Chemistry>EXERCISE>Q 23

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The total number of atoms represented by the compound ${CuSO}_{4} . 5 H_{2} O$ is:

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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 24

The molecular formula

P_{2} O_{5}

means that:

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General Science for Competitive Exams>Chapter 15 - General Concepts of Chemistry>EXERCISE>Q 25

The empirical formula and molecular masses are

C H_{2} O

and

180

g, respectively. What will be the molecular formula of the compound?

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General Science for Competitive Exams>Chapter 15 - General Concepts of Chemistry>EXERCISE>Q 27

Which of the following statements is not correct?

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General Science for Competitive Exams>Chapter 15 - General Concepts of Chemistry>EXERCISE>Q 28

${AgNO}_{3} (aq) + NaCl (aq) \to AgCl (s) + {NaNO}_{3} (aq)$

Above reaction is:

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General Science for Competitive Exams>Chapter 15 - General Concepts of Chemistry>EXERCISE>Q 29

A redox reaction is one in which:

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General Science for Competitive Exams>Chapter 15 - General Concepts of Chemistry>EXERCISE>Q 30

An organic compound containing C, H and N gave the following analysis: C = 40%; H = 13.33%; N = 46.67%. Its empirical formula would be:

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General Science for Competitive Exams>Chapter 15 - General Concepts of Chemistry>EXERCISE>Q 31

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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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: