Chemistry All Chapters Mega Test - Class 10 MCQ
15 Questions MCQ Test - Chemistry All Chapters Mega Test
When hydrogen sulphide gas is passed through a blue solution of copper sulphate, a black precipitate of copper sulphate is obtained and the sulphuric acid so formed remains in the solution. The reaction is an example of :-
When copper turning are added to silver nitrate solution, a blue coloured solution is formed after some time. It is because, copper
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A dilute ferrous sulphate solution was gradu¬ally added to the beaker containing acidified permanganate solution. The light purple colour of the solution fades and finally disappears. Which of the following is the correct explanation for the observation?
When a solution of an acid contains larger amount of acid, it is said to be-
The Ph of a solution of HCL is 4. This shows that the molarity of the solution is
While cooking, if the bottom of the vessel is getting blackened on the outside, it means that:
The property of self-linkage among identical atoms to form long chain compounds is known as:
Which of the following forms the basis of the modern periodic table?
The electronic configuration of an element M is 2, 8, 4. In modern periodic table, the element M is placed in
Element X forms a chloride with the formula XCl2, which is a solid with a high melting point. X would most likely be in the same group of the Periodic Table as
Which of the following pairs of reactants will go undergo a displacement reaction?
During smelting, an additional substance is added which combines with impurities to form a fusible product known as
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