# Class 10 Science Metals and Non Metals Practice Worksheet

In this page we have Class 10 Science Metals and Non Metals Practice Worksheet . Hope you like them and do not forget to like , social shar and comment at the end of the page.

## Multiple Choice Questions:

Question 1) The percentage of lead pencil is:
a)Zero
b)20
c)80
d)70

Question 2) Which of the following metals occur in their pure state?
a)Copper
b)Iron
c)Zinc
d)Gold

Question 3) Silicon is used in
a)Solar energy devices
b)Semiconductors
c)Transistors
d)All of these

Question 4) Which of the following is a noble metal?
a)Copper
b)Iron
c)Gold
d)Aluminum

Question 5) When a metal is added to dilute HCI solution, there is no evolution of gas. Metal is
a)K
b)Na
c)Ag
d)Zn

Question 6) Removal of impurities from ore is known as
a)Crushing and grinding
b)Concentration of ore
c)Calcinations
d)Roasting

Question 7) Concentrated sulphuric acid acts as:
a)Oxidizing agent
b)Dehydrating agent
c)Both
d)None of these

Question 8) Forth floatation method is used for the concentration of
a)Oxide ores
b)Sulphide ores
c)Sulphate ores
d)Halide ores

Question 9) Nature of SO2 is:
a)Basic
b)Acidic
c)Amphoteric
d)Neutral

Question 10) Heating of concentrated ore in absence of air for conversion into oxide ore is known as
a)Roasting
b)Calcinations
c)Reduction
d)None of these

Question 11) Which of the following metal will not displace hydrogen from steam, dilute acids and alkalies?
a)Iron
b)Zinc
c)Mercury
d)Calcium

Question 12) Which reducing agent is used in chemical reduction
a)C
b)CO
c)AI
d)None of these

Question 13) What is anode mud
a)Fan of anode
b)Metal of anode
c)Impurities collected at anode in electrolysis during purification of metals
d)All of these

Question 14) When a non- metal reacts with chlorine, it forms
a)An ionic chloride
b)A covalent chloride
c)A tetrachloride
d)A dichloride

Question 15) Which of the following methods are suitable for preventing an iron frying pan from rusting?
a)Applying grease
b)Applying paint
c)Applying a coating of zinc
d)All of the above

Question 16) Out of the following, which cannot be obtained by electrolysis of aqueous solution of the salt?
a)Ag
b)Mg
c)Cu
d)Cr

Question 17) Aluminum is used in thermite welding because
a)Aluminum is a light metal
b)Aluminum has more affinity for oxygen
c)Aluminum is a strong oxidizing agent
d)Aluminum is a reactive metal

Question 18) Which of the following process is used for the concentration of Bauxite (AI2O3. 2H2O)?
a)Forth floatation
b)Leaching
c)Liquation
d)Magnetic separation

Question 19) The best malleable metal is
a)Aluminum
b)Silver
c)Gold

Question 20) The process of extraction of metal from its ores, is known as
a)Concentration
b)Calcination
c)Purification
d)Metallurgy

Question 21) Which is used as catalyst in Haber’s process?
a)Cr
b)AI
c)Ni
d)Fe

Question 22) The process to heat the ore in the presence of excess supply of air below its melting point is called
a)Roasting
b)Calcination
c)Smelting
d)Liquation

Question 23) Stainless steel is usually made by alloying iron with:
a)Fe and Cu
b)Cu and Cr
d)Cr and Ni

Question 24) Which of the following metals constitutes the alloys magnalium
a)Al, Cu
b)Al, Fe
c)Al, Mg
d)Al, Mn

Question 25) One of the constituents of amalgam is
a)Aluminum
b)Copper
c)Iron
d)Mercury

Question 26) German silver is an alloy of:
a)Copper
b)Magnesium
d)Iron

Question 27) The white phosphorus is stored
a)In air
b)Under water
c)Under kerosene
d)Under CS2

Question 28) Bronze is an alloy of copper and:
a)Tin
b)Aluminum
c)Zinc

Question 29) The chief ore of aluminum is
a)Bauxite
b)Cryolite
c)Alunite
d)Feldspar

Question 30) Formula of magnetite is
a)Fe2O3
b)FeS2
c)FeCO3
d)Fe3O4

Given below are the links of some of the reference books for class 10 Science.

You can use above books for extra knowledge and practicing different questions.

### Practice Question

Question 1 Which among the following is not a base?
A) NaOH
B) $NH_4OH$
C) $C_2H_5OH$
D) KOH
Question 2 What is the minimum resistance which can be made using five resistors each of 1/2 Ohm?
A) 1/10 Ohm
B) 1/25 ohm
C) 10 ohm
D) 2 ohm
Question 3 Which of the following statement is incorrect? ?
A) For every hormone there is a gene
B) For production of every enzyme there is a gene
C) For every molecule of fat there is a gene
D) For every protein there is a gene

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