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प्रश्न
Aluminium is not used to make :
विकल्प
Foils
Wires
Fireworks
Utensils
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उत्तर
Fireworks
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संबंधित प्रश्न
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 ..............
State one use of Copper.
The atomic number of an element Y is 16.
(a) What must an atom of Y do to achieve the nearest inert gas electron arrangement?
(b) Which inert gas is nearest to Y?
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 meant by 22 carat gold? Name the metals which are usually alloyed with gold to make it harder.
Give reasons
Graphite is used in the leads of pencils
State the position of the following in the periodic table:
Aluminium
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Hydrochloric acid,
Write scientific reason.
Generally the ionic compounds have high melting points.
Which is the non-ionic compound in the compounds given below.
AgNO3 + Nacl → AgCl + NaNO3
With reference to the following metals state their use in daily life metal:
iron
With reference to the following metals state their use in daily life metal:
Lead
Electronic configuration of metal A is 2,8,1. Electronic configuration of metal B is 2,8,8,2. Which of the above metals is more reactive? Explain with reason.
The metal which is liquid at room temperature is ______.
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.
Which one of the following four metals would be displaced from the solution of its salts by other three metals?
Name one metal and one non-metal that exist in liquid state at room temperature. Also name two metals having melting point less than 310 K (37°C)
Which metals are not solid at room temperature?
