मराठी

Which of the following elements would yield a neutral oxide? Na, S, C, K, H

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प्रश्न

Which of the following elements would yield a neutral oxide?

Na, S, C, K, H

अति संक्षिप्त उत्तर
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उत्तर

H would yield neutral oxides.

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पाठ 3: Metals and Non-metals - Exercise 1 [पृष्ठ १६५]

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लखमीर सिंह Chemistry [English] Class 10
पाठ 3 Metals and Non-metals
Exercise 1 | Q 38. (b) (iii) | पृष्ठ १६५

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.


_________ solution is blue in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3


‘E’ is an element which reacts with oxygen to form an oxide E2O. An aqueous solution of E2O turns red litmus blue, so:
i. What is the nature of oxide E2O ?
ii. Write the name of element ‘E’.


Write equations for the reactions of iron with steam. 


Food cans are coated with tin and not with zinc because ______.


The reaction of an iron nail with copper sulphate solution is ........... reaction.

(a) Combination

(b) Displacement

(c) Double displacement

(d) Decomposition


Calcium is a ______ reactive metal than sodium.


What is the nature of the oxide Na2O? What happens when it is dissolved in water? Write the chemical equation of the reaction involved.


What happens when magnesium reacts with very dilute nitric acid? Write an equation for the reaction involved.


What happens when calcium reacts with water? Write the chemical equation of the reaction of calcium with water.


Name one metal more reactive than hydrogen.


Name one metal which displaces copper from copper sulphate solution.


The elements whose oxides can turn litmus solution red are ______.


An element is soft and can be cut with a knife. It is very reactive and cannot be kept open in the air. It reacts vigorously with water. The element is most likely to be ______.


\[\ce{CuSO4_{(aq)} + Fe_{(s)} -> FeSO4_{(aq)} + Cu_{(s)}}\]

\[\ce{FeSO4_{(aq)} + Zn_{(s)} -> ZnSO4_{(aq)} + Fe_{(s)}}\]

On the basis of the above reactions, indicate which is most reactive and which is least reactive metal out of zinc, copper and iron.


Which of the following reactions will not occur? Why not?

  1. \[\ce{MgSO4_{(aq)} + Cu_{(s)} -> CuSO4_{(aq)} + Mg_{(s)}}\]
  2. \[\ce{CuSO4_{(aq)} + Fe_{(s)} -> FeSO4_{(aq)} + Cu_{(s)}}\]
  3. \[\ce{MgSO4_{(aq)} + Fe_{(s)} -> FeSO4_{(aq)} + Mg_{(s)}}\]

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?


Choose the correct alternative and rewrite the following:

Which of the following is lue in colour?


Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?


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