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प्रश्न
Name a metal which It does not react with any physical state of water?
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उत्तर
Gold does not react with any physical state of water.
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संबंधित प्रश्न
Why are metals called electropositive elements whereas non-metals are called electronegative elements?
A copper coin is kept immersed in a solution of silver nitrate for some time. What will happen to the coin and the colour of the solution?
How would you show that silver is chemically less reactive than copper?
Complete and balance the following equation:
Na2O + H2O →
Complete and balance the following equation:
Which of the following elements would yield a neutral oxide?
Na, S, C, K, H
What type of oxides are formed when non-metals react with oxygen? Explain with an example.
Why is white phosphorus kept immersed under water?
Name two metals (other than zinc and iron) which can displace hydrogen from dilute hydrochloric acid?
Name one metal which displaces copper from copper sulphate solution and one which does not.
You are given a solution of AgNO3. Which of the following do you think cannot displace Ag from AgNO3solution?
(a) Magnesium
(b) Zinc
(c) Gold
(d) Copper
The metals which can produce amphoteric oxides are:
(a) sodium and aluminium
(b) zinc and potassium
(c) calcium and sodium
(d) aluminium and zinc
An element X forms two oxides XO and XO2. The oxide XO is neutral but XO2 is acidic in nature. The element X is most likely to be:
(a) sulphur
(b) carbon
(c) calcium
(d) hydrogen
An element E forms an oxide E2O. An aqueous solution of E2O turns red litmus paper blue.
(a) What is the nature of the oxide E2O?
(b) State whether element E is a metal or a non-metal.
(c) Give one example of an element like E.
If A, B, C, D, E, F, G, H, I, J and K represent metals in the decreasing order of their reactivity, which one of them is most likely to occur in a free state in nature?
Choose the correct alternative and rewrite the following:
Reaction of iron nails whith copper sulphate solution is an example of _____________________
Where does the metal aluminium, used in the thermit process, occurs in the reactivity series of metals?
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?
- Good thermal conductivity
- Good electrical conductivity
- Ductility
- High melting point
An alkali metal A gives a compound B (molecular mass = 40) on reacting with water. The compound B gives a soluble compound C on treatment with aluminium oxide. Identify A, B and C and give the reaction involved.
