General Science Chemistry MCQs

Chemistry Objective (Multiple Choice) General Knowledge Questions & Answers for SSC-CGL, UPPSC, UPSC, NDA, CDS and UPSC Civil Services Prelims Examination

21. What is the body called which does not have any tendency to recover its original configuration, on the removal of deforming force?

[A] Perfectly plastic
[B] Perfectly elastic
[C] Perfectly ductile
[D] None of the above

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22. What is Young’s Modulus?

[A] ratio of longitudinal strain to normal stress
[B] product of normal stress of longitudinal strain
[C] ratio of normal stress to longitudinal strain
[D] ratio of normal stress to lateral strain

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23. What is the order of distance for interatomic forces to be active?

[A] 10–7 metre
[B] 10–8 metre
[C] 10–9 metre
[D] 10–10 metre

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24. What is the order of distance for Vander Wall forces to be active?

[A] 10–6 metre
[B] 10–7 metre
[C] 10–8 metre
[D] 10–9 metre

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25. What happens to the non-metallic character of elements in the p-block of the periodic table?

[A] non-metallic character decreases down the group
[B] non-metallic character increases down the group
[C] No fix pattern
[D] None

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26. What is the general outer electron configuration of Group 13 elements?

[A] ns2 np2
[B] ns2
[C] ns2 np1
[D] ns2 np3

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27. Which of these is NOT an allotropic form of carbon?

[A] Diamond
[B] Graphite
[C] Fullerene
[D] None of the above

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28. Which of the following element is NOT an alkaline earth metal?

[A] Magnesium
[B] Strontium
[C] Barium
[D] Beryllium

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29. What is the half life of the longest lived isotope of Francium?

[A] 1 minute
[B] 21 minute
[C] 21 hours
[D] 100 days

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30. Which of the following is NOT correct about Group 14 elements?

[A] All of them are solids
[B] Melting points are much higher than those of corresponding elements of group 13
[C] Carbon is a non-metal
[D] Germanium is a metal

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