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. Which of the following is / are correct statements with respect to Copper (Cu), Silver (Ag) and Gold (Au)?
1. All of them are can be found naturally in their elemental state
2. All of them belong to same group in the periodic table
Select the correct option from the codes given below:

[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 nor 2

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2. Which among the following is the correct set of chemical formulae of Chile Saltpetre, Saltpetre and Quick Lime?

[A] KNO3, NaNO3, CaO
[B] NaNO3, KNO3, Ca(OH)2
[C] Na(OH)2, KOH, CaO
[D] NaNO3, KNO3, CaO

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3. Which of the following is the most active chemically? 

[A] Chlorine
[B] Flourine
[C] Lithium
[D] Iodine

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4. 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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5. The energy required to remove an electron from the outermost shell of an atom in its isolated gaseous state is called?

[A] Electron Affinity
[B] Reducing Potential
[C] Ionization Potential
[D] Shell Potential

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6. Which among the following is a Noble Gas?

[A] Nitrogen
[B] Hydrogen
[C] Oxygen
[D] Helium

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7. Which among the following would cause the bright red color due to bursting of crackers?

[A] Strontium
[B] Sodium
[C] Sulphur
[D] Magnesium

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8. When a tube light breaks, a cracking sound is produced because ____?

[A] Pressure inside the lamp is less than atmospheric pressure
[B] Pressure inside the lamp is more than atmospheric pressure
[C] The lamp is filled with reactive gases
[D] The lamp is filled with mercury vapour

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9. Which gas is used in making of Vanaspati ghee from vegetable oils?

[A] N2
[B] NO2
[C] H2
[D] Ne

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10. Identify the thermosetting plastic from the given options:

[A] Polythene
[B] Bakelite
[C] Polyvincychloride
[D] Casseine

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