IGCSE O Level Chemistry Practice Test 110

Pure Substances and Mixtures MCQ (Multiple Choice Questions) PDF - 110

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Pure Substances & Mixtures Questions and Answers PDF Download: Quiz 110

MCQ 546: The melting point of silicon is

410 °C
110 °C
140 °C
1410 °C

MCQ 547: Through the separating funnel, immiscible solutions

cannot be dissolved
cannot be separated completely
can be easily decanted
can be centrifuged

MCQ 548: Mass of an electron is

¹⁄₁₈₄₀ of a proton only
¹⁄₁₈₄₀ of a neutron only
1860 times of a proton
¹⁄₁₈₄₀ of a proton and neutron

MCQ 549: Monosodium Glutamate (MSG) is added in food for what?

preservation
flavoring
quick cooking
Decolourization

MCQ 550: In electrolysis of dilute HCl, at the cathode

oxygen gas is given off
hydrogen gas is given off
chlorine gas is given off at anode
hydrogen chloride is given off

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