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

31. What is the electron configuration of Radium?

[A] 6s2
[B] 7s2
[C] 7s2 7p6
[D] 7s2 7p4

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

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

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33. Which of the following represents the general formula for alkanes?

[A] CnH2n
[B] CnH2n-2
[C] CnH2n+2
[D] CnHn

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34. What is the hemihydrate of calcium sulphate commonly known as?

[A] Gypsum
[B] Plaster of Paris
[C] Chloroform
[D] Limestone

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35. What is dry ice?

[A] solidified form of Carbon dioxide
[B] frozen heavy water
[C] isotope of Hydrogen
[D] popular name of Benzene

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36. Which of the following is correct about Potassium sodium tartrate tetrahydrate?

[A] It is also known as Globular’s salt
[B] It is known to exhibit piezoelectricity
[C] Both a and b
[D] None of the above

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37. Which among the following is / are significant uses of Hydrogen globally?

  1. Fuel for Vehicles
  2. Production of Fertilizers
  3. Production of Petroleum Fuels

Select the correct option from the codes given below:

[A] Only 1
[B] Only 1 & 2
[C] 1, 2 & 3
[D] Only 2 & 3

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38. What is Rose metal?

[A] It is an alloy of Nickel, Tin and Zinc
[B] It is an alloy of Bismuth, Copper and Palladium
[C] It is an alloy of Palladium, Tin and Lead
[D] It is an alloy of Bismuth, Tin and Lead

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39. Which of the following techniques can be used to separate cream from milk?

[A] Filtration
[B] Distillation
[C] Centrifugation
[D] Chromatography

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40. Which of the following is not a form of brass?

[A] Dutch metal
[B] Prince’s metal
[C] Field’s metal
[D] Muntz metal

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