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

1. The Alkali metals are called good reducing agents. This implies that__:

[A] They easily capture electrons
[B] They are not stable at room temperature
[C] They easily lose electrons
[D] They don’t act with dilute acids

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2. Which among the following methods can be used to remove the permanent hardness in water due to calcium or magnesium sulphates?

[A] Sulphonate method
[B] Nitrate method
[C] Zeolite method
[D] None of these

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3. White Phosphorous is represented by which among the following symbols?

[A] P1
[B] P2
[C] P3
[D] P4

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4. Potassium permanganate is used to purify water. Which among the following properties of Potassium permanganate helps in this work?

[A] sterilizing
[B] oxidizing
[C] reducing
[D] leaching

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5. Which among following is also known as white gold?

[A] Nickel

[B] Rhodium
[C] Platinum
[D] Palladium

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6. What is the common name of Calcium Sulphate Hemihydrate?

[A] Bleaching powder
[B] Slaked lime
[C] Plaster of paris
[D] Detergent

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7. Which among the following is the unit of the scale used for measurement of the spicy heat of a chili pepper?

[A] Smith
[B] Wright
[C] Orville
[D] Scoville

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8. Which among the following minerals is also known as Horn Silver?

[A] Silver Iodide
[B] Silver Chroride
[C] Zinc Phosphate
[D] Silver Sulphide

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9. Which of these states of matter has the maximum density?

[A] Solids
[B] Liquids
[C] Gases
[D] None of the above

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10. What is the property of matter by which a body tends to regain its original configuration after the removal of deforming force known as?

[A] Plasticity
[B] Ductility
[C] Elasticity
[D] Malleability

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