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प्रश्न
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?
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उत्तर
The metal K is most likely to occur in a free state in nature because it is the least reactive among other metals. Since it is the least reactive, it will not react with other elements.
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संबंधित प्रश्न
Metal A has electronic configuration (2, 8, 1) and metal B has (2, 8, 8, 2). Which is more reactive? Why? Identify these metals.
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
Write the electron-dot structures for sodium, oxygen and magnesium.
Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).
Explain the following reaction with the help of a balanced chemical equation:
Magnesium reacts with hot water.
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?
Write equation for the reaction of sodium with oxygen.
Write equation for the reaction of magnesium with oxygen.
Which of the following elements would yield an acidic oxide.
Na, S, C, K, H
Name two metals (other than zinc and iron) which can displace hydrogen from dilute hydrochloric acid?
What special name is given to substances like aluminium oxide.
One of the following is not a neutral oxide. This is:
(a) CO
(b) H2O
(c) N2O
(d) Na2O
A basic oxide will be formed by the element:
(a) K
(b) S
(c) P
(d) Kr
Name a metal which does not react with cold as well as hot water but reacts with steam.
When calcium metal is added to water, the gas evolved does not catch fire but the same gas evolved on adding sodium metal to water catches fire. Why is it so?
Where does the metal aluminium, used in the thermit process, occurs in the reactivity series of metals?
Which one among the following is an acidic oxide?
Which of the following property is not responsible for copper to be used as electrical conduction wires?
Find the odd one out:
