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Test: Chemical Properties of Metals - UPSC MCQ


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15 Questions MCQ Test - Test: Chemical Properties of Metals

Test: Chemical Properties of Metals for UPSC 2024 is part of UPSC preparation. The Test: Chemical Properties of Metals questions and answers have been prepared according to the UPSC exam syllabus.The Test: Chemical Properties of Metals MCQs are made for UPSC 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Chemical Properties of Metals below.
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Test: Chemical Properties of Metals - Question 1

Among the following metals, the metal that can displace zinc from zinc sulphate solution is:

Detailed Solution for Test: Chemical Properties of Metals - Question 1

Magnesium is more reactive than zinc therefore it can displace zinc from its solution.

Test: Chemical Properties of Metals - Question 2

During electrolytic reduction, the metals are deposited at:

Detailed Solution for Test: Chemical Properties of Metals - Question 2

During electrolytic decomposition metals are deposited at the cathode because metals upon electrolysis form positive ions and as we know that Cathode is negatively charged it attracts the positive ions and hence metal get deposited on the cathode

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Test: Chemical Properties of Metals - Question 3

In which of the following pair, displacement reaction will be seen:

Detailed Solution for Test: Chemical Properties of Metals - Question 3

Copper metal is more reactive than silver nitrate so it can displace silver and can form copper  nitrate. 

Test: Chemical Properties of Metals - Question 4

Oxides of Metals are:

Detailed Solution for Test: Chemical Properties of Metals - Question 4

Metal oxides which react with both acids as well as bases to produce salts and water are known as amphoteric oxides. Amphoteric oxides include lead oxide and zinc oxide, among many others. 

Test: Chemical Properties of Metals - Question 5

When dilute HCl reacts with Zinc metal, the gas liberated is?

Detailed Solution for Test: Chemical Properties of Metals - Question 5

When Zn reacts with dilute HCl, hydrogen gas is evolved. 
Zn + 2HCl → ZnCl2  + H2
 

Test: Chemical Properties of Metals - Question 6

Which of the following is not observed when aluminium is added to a solution of copper sulphate?

Detailed Solution for Test: Chemical Properties of Metals - Question 6

The final solution becomes colorless and not light green since aluminum sulphate is colourless.

Test: Chemical Properties of Metals - Question 7

The ratio of concentrated hydrochloric acid and concentrated nitric acid in aqua regia is:

Test: Chemical Properties of Metals - Question 8

Metals like iron, copper, aluminium and zinc are given to a student. The correct decreasing order of reactivity of these metals written by the student is:

Detailed Solution for Test: Chemical Properties of Metals - Question 8

Al > Zn > Fe > Cu is the decreasing order of metals in reactivity series.

Test: Chemical Properties of Metals - Question 9

Which metal is kept immersed in kerosene?

Test: Chemical Properties of Metals - Question 10

Which of the following metal oxide is soluble in water?

Detailed Solution for Test: Chemical Properties of Metals - Question 10

Potassium oxide is an ionic compound formed by combining potassium and oxygen. It is denoted by K2O. Potassium oxide is a strongly corrosive alkali, which when dissolved in water. 

Test: Chemical Properties of Metals - Question 11

What is the black substance formed when copper is heated in air?

Detailed Solution for Test: Chemical Properties of Metals - Question 11

Heated copper metal reacts with oxygen to form the black copper oxide. The copper oxide can then react with the hydrogen gas to form the copper metal and water.

Test: Chemical Properties of Metals - Question 12

Mostly oxides of non-metals are:

Test: Chemical Properties of Metals - Question 13

Hydrogen gas is not evolved when metals react with:

Detailed Solution for Test: Chemical Properties of Metals - Question 13

Nitric acid is a highly oxidising agent. So when metals react with nitric acid and liberate hydrogen, this hydrogen immediately react with water and as a result no hydrogen is evolved out.

Test: Chemical Properties of Metals - Question 14

A metal ‘A’ reacts with dilute HCl to give metal salt and a gas ‘B’. Identify gas is ‘B’.​

Test: Chemical Properties of Metals - Question 15

An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be:

Detailed Solution for Test: Chemical Properties of Metals - Question 15
Ca can react with O2 and give compounds which are soluble in water.
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