Practice test
Chemical changes and reactions - Test Set 4
Review 8 exam-focused questions with detailed explanations, then start the interactive test when you are ready.
8 questions
Questions and explanations
- Bleaching action of Chlorine is due to which reaction?
Question 1
- Hydrolysis
- Redox
- Decomposition
- Oxidation
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- A thick paste of cement, sand, and water is called:
Question 2
- Concrete
- R.C.C.
- Mortar
- Kiln
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- Which one of the following metals is used to galvanise iron?
Question 3
- Zinc
- Copper
- Lead
- Mercury
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- Cement is formed by strongly heating a mixture of:
Question 4
- limestone and graphite
- chalk and graphite
- limestone and clay
- clay and graphite
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- Which metal does not undergo corrosion due to the formation of an oxide layer?
Question 5
- Aluminium
- Copper
- Zinc
- Iron
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- In which type of chemical reaction is a single product formed from two or more reactants?
Question 6
- Decomposition reaction
- Displacement reaction
- Double displacement reaction
- Combination reaction
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- Adding Cl₂ to benzene in the presence of AlCl₃ is an example of:
Question 7
- Elimination reaction
- Substitution reaction
- None of the options
- Addition reaction
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- An example of physical change:
Question 8
- Blackening of silverware
- Burning of candle
- Making of curd from milk
- Dissolving of sugar in water
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