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 of the following is also known as wood alcohol? 

[A] Methanol
[B] Ethanol
[C] Propanal
[D] Butanol

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3. Which among the following oxides cause the Acid rain ? 

[A] Carbon monoxide and carbon dioxide
[B] Nitrous oxide and sulphur dioxide
[C] Carbon dioxide and nitrous oxide
[D] Sulphur dioxide and carbon monoxide

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4. 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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5. 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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6. Which among the following is known as White Vitriol?

[A] Zinc Sulphate
[B] Zinc Chloride
[C] Zinc Phosphate
[D] Zinc oxide

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7. Which among the following is a common salt in Detergents?

[A] Sulphate
[B] Nitrate
[C] Sulphonate
[D] Carbonate

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

[A] Nickel

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

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9. Highest percentage of nitrogen is found in which among the following fertilizers among the given options?

[A] Calcium ammonium nitrate
[B] Ammonium nitrate
[C] Calcium nitrate
[D] Urea

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10. Argon is the third most common gas in the Earth’s atmosphere, at 0.93%. This gas is generated due to decay of which among the following isotopes in the Earth’s crust ?

[A] K-40
[B] Ca-40
[C] Ca-48
[D] K-41

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