1,039 Questions

Chemistry

Practice Chemistry MCQs from the Science syllabus.

Showing 20 of 1039 questionsPage 12 of 52
ScienceHard
Chemistry
Chemical Reactions

What is the valency of Iron in Ferric Chloride?

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ScienceHard
Chemistry
Chemical Reactions

What happens in a disproportionation reaction?

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ScienceHard
Chemistry
Chemical Reactions

Which substance is a liquid catalyst?

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ScienceHard
Chemistry
Chemical Reactions

How many molecules of water are present in 180g of water?

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ScienceHard
Chemistry
Chemical Reactions

In an exothermic reaction, the enthalpy of products is:

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ScienceHard
Chemistry
Chemical Reactions

What is the catalyst used in the hydrogenation of vegetable oils?

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ScienceHard
Chemistry
Chemical Reactions

Which of the following is an example of an addition reaction?

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ScienceHard
Chemistry
Chemical Reactions

What is the valency of the Nitrogen atom in the Ammonium ion (NH4+)?

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ScienceHard
Chemistry
Chemical Reactions

During the electrolysis of water, the ratio of hydrogen to oxygen by volume is:

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ScienceHard
Chemistry
Chemical Reactions

Which of the following describes the 'Contact Process'?

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ScienceHard
Chemistry
Chemical Reactions

What is the effect of an inhibitor in a chemical reaction?

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ScienceHard
Chemistry
Chemical Reactions

Which of the following is a salt of a strong acid and a weak base?

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ScienceHard
Chemistry
Chemical Reactions

What is the oxidation number of Cr in K2Cr2O7?

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ScienceHard
Chemistry
Chemical Reactions

Identify the oxidant in the reaction: H2S + HNO3 -> NO2 + S + H2O.

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ScienceHard
Chemistry
Chemical Reactions

What is the molecular mass of Calcium Carbonate? (Ca=40, C=12, O=16)

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ScienceHard
Chemistry
Chemical Reactions

Which of the following is a physical property changed during a chemical reaction?

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ScienceEasy
Chemistry
Metals Nonmetals

Which of the following is the most abundant metal in the Earth's crust?

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ScienceEasy
Chemistry
Metals Nonmetals

What is the chemical symbol for Silver?

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ScienceEasy
Chemistry
Metals Nonmetals

Which metal is the best conductor of electricity?

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ScienceEasy
Chemistry
Metals Nonmetals

Which property allows metals to be drawn into thin wires?

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