Class 10 Science Chapter 3 MCQ

Class 10 Science Chapter 3 MCQ (Multiple Choice Questions) of Metals and Non-Metals. These sets of MCQ Online Tests contain more than 100 questions with suitable explanation and answers.

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Class 10 Science Chapter 3 MCQ for 2020-2021

Class: 10Science
Chapter: 3Multiple Choice Questions (MCQ) Tests

Class 10 Science Chapter 3 MCQ with Answers

Class 10 Science chapter 3 Metal and non-metals MCQ questions online test are given below for practice. These MCQs are prepared from NCERT Books only. Answers as well as explanation of each answers are also given just below the questions. Questions are useful for all board like CBSE, UP Board, MP Board, and other board who are following NCERT Textbooks 2020-2021 for their final exams.

Q1

Which of the following statement is or are incorrect?

[A]. All the non-metals are solids or gases, except bromine which is a liquid non-metal at the room temperature.
[B]. Diamond and graphite, are also non-metals.
[C]. Non-metals are the elements which form negative ions by gaining electrons or accepting electrons.
[D]. Oxygen is the only non-metal element which loses electrons to form positive ions, Oxygen ions (O+).
Q2

In which of the following statements is or are incorrect?

[A]. Gallium and cesium metals also have high melting points (of 1300°C and 2800°C respectively).
[B]. Sodium and potassium are soft metals which can be easily cut with a knife.
[C]. Bangles are made of ‘gold’ metal because it is a highly lustrous (or shiny) metal.
[D]. Silver metal is an excellent reflector of light.




Q3

Read the following sentences carefully and choose the incorrect option(s):

[A]. Potassium metal (K) also reacts with the oxygen (O2) of air at room temperature to form a basic oxide, called potassium oxide (K2O).
[B]. Metal oxides, being acidic, turn blue litmus solution red.
[C]. Sodium metal reacts with the oxygen of air at room temperature to form a basic oxide called sodium oxide.
[D]. Sodium oxide and potassium oxide are the two metal oxides which are soluble in water.
Q4

If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of:

[A]. CuSO4
[B]. CuCO3
[C]. Cu(NO3)2
[D]. CuO
Q5

In which of the following statement is or are incorrect?

[A]. Sodium reacts vigorously with cold water forming sodium hydroxide and hydrogen gas.
[B]. Calcium reacts with cold water to form calcium hydroxide and hydrogen gas.
[C]. Magnesium metal react with cold water to form magnesium hydroxide and hydrogen.
[D]. None of the above
Q6

Consider the given statements and choose the incorrect one:

[A]. Hydrogen is an inert gaseous non-metal whose presence in air reduces the rate of combustion and makes it safe.
[B]. Non-metal sulphur is present in many of the substances found in plants and animals.
[C]. Carbon compounds found like proteins, fats, carbohydrates, vitamins and enzymes, etc.
[D]. Non-metals are the elements that do not conduct heat and electricity, and are neither malleable nor ductile.



Q7

Which one of the following properties is not generally exhibited by ionic compounds?

[A]. Solubility in water
[B]. Electrical conductivity in solid state
[C]. High melting and boiling points
[D]. Electrical conductivity in molten state
Q8

Generally, metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?

[A]. H2SO4
[B]. HCl
[C]. HNO3
[D]. All of these
Q9

Which of the following oxide(s) of iron would be obtained on the prolonged reaction of iron with steam?

[A]. FeO
[B]. Fe2O3
[C]. Fe3O4
[D]. Fe2O3 and Fe3O4
Q10

Which one of the following metals does not react with cold as well as hot water?

[A]. Na
[B]. Ca
[C]. Mg
[D]. Fe



Hydrogen gas is not evolved when a metal reacts with nitric acid. Why?

It is because HNO3 is a strong oxidising agent. It oxidises the H2 produced to water and itself gets reduced to any of the nitrogen oxides (N2O, NO, NO2). But magnesium (Mg) and manganese (Mn) react with very dilute HNO3 to evolve H2 gas.

Why does Magnesium float on the surface of hot water?

Magnesium reacts with hot water to form magnesium hydroxide and hydrogen. It starts floating due to the bubbles of hydrogen gas sticking to its surface.

Why do ionic compounds have high melting and boiling points?

This is because a considerable amount of energy is required to break the strong inter-ionic attraction.

Why are the sulphides and carbonates converted into their oxides during the extraction of metal?

It is easier to obtain a metal from its oxide, as compared to its sulphides and carbonates. Therefore, prior to reduction, the metal sulphides and carbonates must be converted into metal oxides.

All the Multiple Choice questions are prepared by the subject expert. Only important questions for board examinations are included here with answer and explanation. There are four choices with one correct choice. About 25 sets of MCQ online tests are given to use free.



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