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प्रश्न
With reference to the following metals state their use in daily life metal:
Aluminium
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उत्तर
Aluminium:
- Making utensils as a metal, it is easily moulded in utensils.
- In paints – Aluminium powder is mixed with linseed oil as it is anti-corrosive in nature.
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संबंधित प्रश्न
Fill in the blanks:
Metals react with acids to produce _________ gas.
Give reasons for the following.
Sodium and potassium are stored in kerosene.
Give a reason for Alkali metals are good reducing agents.
Fill in the following blanks with suitable words:
A metal having low melting point is ..................... but a non-metal having very high melting point is ..............
Give the composition of an alloy called solder. State its one property and one use.
Fill in the following blank with suitable word:
The electrical conductivity and melting point of an alloy is ........... than that of pure metals.
What is an alloy? How is an alloy made?
State two important uses of following metal
Uses of tin
State two important uses of following metal
Uses of magnesium
Write name.
The nonmetal having electrical conductivity.
Write scientific reason.
Sodium is always kept in kerosene.
State the position of the following in the periodic table:
Halogens
Halogen reacts with acid.
Higher Order Thinking Skills.
Aakash noticed that the metal latch on gate was difficult to open during hot sunny days. However, it was not difficult to open the same latch at night. Aakash observed that the latch and the gate are exposed to the sun during day time.
- Formulate a hypothesis based on the information provided.
- Briefly state how you would test the hypothesis.
Give reasons for the following.
- Aluminum foils are used to wrap food items.
- Immersion rods for heating liquids are made up of metallic substances.
- Sodium and potassium are stored in kerosene.
- Mercury is used in thermometers.
Which of the following property is generally not shown by metals?
Which of the following metals can displace the other two metals from their salt solutions?
The typical shine of metals is called ______.
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the metallic element.
