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

71. Which of the following metal finds its use as a radiocontrast agent in X-ray imaging?

[A] Scandium
[B] Lithium
[C] Barium
[D] Titanium

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72. Which of these metals is commonly used in tanning of leather?

[A] Phosphorous
[B] Indium
[C] Manganese
[D] Chromium

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73. Which of these metals is most commonly used as control rods in the nuclear reactors?

[A] Platinum
[B] Cadmium
[C] Cobalt
[D] Silver

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74. Which of these non-metals is liquid at room temperature?

[A] Helium
[B] Argon
[C] Bromine
[D] Sulphur

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75. Which of these non-metals is commonly used as a general anesthetic?

[A] Helium
[B] Tellurium
[C] Xenon
[D] Fluorine

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76. Which of the following is the method to get rid of temporary hardness of water?

[A] Boiling the water
[B] Addition of calcium hydroxide
[C] Both a and b
[D] None

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77. How are the soaps that float in water prepared?

[A] By adding a gum called as rosin
[B] By beating tiny air bubbles
[C] By dissolving soap in ethanol
[D] None of the above

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78. Which of these drugs help to reduce or abolish pain without causing impairment of consciousness?

[A] Analgesics
[B] Antibiotics
[C] Tranquilisers
[D] Antiseptics

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79. Which of these drugs is called as the ‘love drug’?

[A] Mescalin
[B] MDMA
[C] Dextromethorphan
[D] Ketamine

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80. What is the nature of Drinking soda?

[A] Alkaline
[B] Acidic
[C] Neutral
[D] Oxidant

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