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WorksheetsMetals and non-metal - O
Total questions: 18
Worksheet time: 36mins
Properties of substances W, X, Y and Z are listed below:
W: A liquid metal
X: A liquid non-metal
Y: A gaseous non-metal
Z: A non-metal which conducts electricity
W, X, Y and Z are respectively
Iron, Iodine, hydrogen, and oxygen.
Gold, Sulphur, chlorine, and hydrogen
Copper, phosphorus, nitrogen, and carbon.
Mercury, bromine, oxygen, and graphite.
Sodium metal is kept immersed in kerosene oil because
It is a very reactive metal.
A lot of heat is evolved when sodium reacts with water.
It can even react with moisture present in air violently.
All of these.
An unknown metal X when placed in copper sulphate, red brown pieces of copper fall to the bottom of the test tube. When metal X is placed in Aluminium sulphate solution, no change is observed. Metal X can be:
Sodium
Potassium
Iron
Calcium
Substance X reacts with dilute HCl violently, Y reacts slowly while Z does not react at all. X, Y and Z could be respectively:
Cu, Al, Fe
Al, Na, Cu
Na, Cu, Fe
K, Al, Cu
In which of the following set-up’s reaction will take place?
i. Magnesium ribbon in copper sulphate solution.
ii. A few pieces of calcium in magnesium sulphate solution.
iii. Copper wire in zinc sulphate solution.
iv. Iron nails in magnesium sulphate solution.
(iii) and (iv) only
(i) and (iv) only
(ii) and (iii) only
(i) and (ii) only
Match column I with column II and select the correct option from the given codes:
a-iii, b.-iv, c-i, d-ii
a-i, b- ii, c-iv, d- iii
a-ii, b-iii, c-i, d-iv
a-iv, b-i, c-ii, d-iii
Which of the following statement is incorrect?
Gold and silver are the most malleable and ductile metals.
All metals are hard and strong.
Mercury and gallium are metals which exist in liquid state at room temperature.
Most of the metals have high specific gravities.
What will happen if you keep a solution of copper sulphate in an iron container for few days? What is the reason for your observation?
The surface of iron container will develop a green layer due to corrosion caused by copper sulphate.
Copper metal will be deposited in iron container since copper is more reactive than iron.
Nothing will happen since no reaction takes place between copper sulphate and iron.
Holes will be formed in the container as iron is more reactive than copper hence it displaces copper from its solution.
Kanika takes a burning substance and collects the evolved vapours in a test tube, making sure that they do not escape. A small amount of water is added to the test tube. To the solution obtained, a few drops of blue litmus solution are added. The litmus turns red. Which of the following could be the burning substance?
Magnesium.
Sulphur.
Sodium.
Iron.
Vidisha placed a copper wire in silver nitrate solution as shown in the figure:
Which of the following represents correct observation?
The colour of the solution turned blue and precipitate of solid silver was obtained.
Colour of the solution turned green and copper wire turned blue.
There was no change in the colour of the solution of the wire.
Colour of the solution became silver and there was no change in the colour of copper wire.
Read the following statements carefully and identify X, Y, and Z respectively.
i. X is stored under kerosene.
ii. Y catches fire on exposure to air and stored in water.
iii. Z does not react with cold or hot water but reacts with steam.
Na, Mg, Cu
Na, P, Fe
Cu, Zn, K
Zn, Cu, Na
Read the given statements and select the correct options:
Statement 1: Silver objects become green and lose their shine with passage of time.
Statement 2: Silver reacts with carbon dioxide and moisture present in the atmosphere.
Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
Statement 1 is true and statement 2 is false.
Both statements 1 and 2 are false.
A few properties are listed as:
i. Form acidic oxides.
ii. Produce sound on hitting
iii. High tensile strength.
iv. Low density.
v. Brittle.
i, ii and v only
iii and iv only.
i , iv and v only.
iii and v only.
Read the given passage and fill in the blanks by selecting an appropriate option.
Non-metals find wide applications in industries. For example (i) is used in electrodes, (ii) is used in welding metals, (iii) is used to make antiseptic creams while (iv) is used as a preservative due to its inert nature.
Carbon, hydrogen, chlorine and phosphorus.
Hydrogen, oxygen, sulphur and nitrogen.
Graphite, hydrogen, sulphur and nitrogen.
Phosphorus, sulphur, oxygen and carbon.
Select the correct statements.
i. Magnesium ribbon on heating in air catches fire and burns with white flame to form magnesium oxide.
ii. All metals react with water to evolve hydrogen gas.
iii. Iron reacts with cold water slowly.
iv. Sodium metal is always kept in kerosene oil as it reacts vigorously with air and moisture.
i and iii only.
ii and iii only.
i and iv only.
ii and iv only.
Study the given table carefully and select the appropriate option.
I is copper; II is sulphur.
II is sulphur; III is coal.
III is iron; IV is copper.
II is coal; IV is copper.
Observe the given figure carefully. X and Y respectively are:
Zn (Zinc) and Ag (Silver).
Au (Gold) and Cu (Copper).
Fe (iron) and Cu (copper).
Zn (Zinc) and Cu (copper).
Aditya, a class 8 student investigated the reactivity of four metals, iron, copper, zinc, and aluminium. He arranged three experimental set-ups as shown in the diagram. Which of the following statements is correct regarding these experiments?
Reaction occurs in all the three beakers.
Colour of solution changes from blue to green in beaker 1.
Colour of solution changes from green to colourless in beaker 2.
All of these.
