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प्रश्न
From amongst the metals sodium, calcium, aluminium, copper and magnesium, name the metal:
- which reacts with water only on boiling, and
- another which does not react even with steam.
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उत्तर
- Magnesium
- Copper
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संबंधित प्रश्न
Why is sodium kept immersed in kerosene oil?
Write the electron-dot structures for sodium, oxygen and magnesium.
Show the formation of Na2O by the transfer of electrons.
Name the metal which has been placed at the top of the reactivity series.
The white powder formed when magnesium ribbon burns in oxygen is of ______.
Which of the following elements would yield a neutral oxide?
Na, S, C, K, H
How do metals react with hydrogen? Explain with an example.
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
What is the action of water on sodium? Write the equation of the chemical reaction involved.
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
Name another metal oxide which behaves like aluminium oxide.
A metal less reactive and another metal more reactive than hydrogen are ______.
An element E reacts with water to form a solution which turns phenolphthalein solution pink. The element E is most likely to be ______.
An element E forms an oxide E2O. An aqueous solution of E2O turns red litmus paper blue.
- What is the nature of the oxide E2O?
- State whether element E is a metal or a non-metal.
- Give one example of an element like E.
Name a metal for the given case:
It does not react with any physical state of water.
What are noble gases?
Choose the correct alternative and rewrite the following:
Reaction of iron nails whith copper sulphate solution is an example of _____________________
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?
(i) Good thermal conductivity
(ii) Good electrical conductivity
(iii) Ductility
(iv) High melting point
Find the odd one out:
Tungsten wire is used in electric bulbs.
