Chemical Reactions And Equations - Class 10 MCQ
10 Questions MCQ Test - Chemical Reactions And Equations
Before burning in air, the magnesium ribbon is cleaned by rubbing with a sand paper to:
In a chemical reaction between sulphuric acid and barium chloride solution the white precipitates formed are of:
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The respiration process during which glucose undergoes slow combustion by combining with oxygen in the cells of our body to produce energy, is a kind of:
It is necessary to balance a chemical equation in order to satisfy the law of:
Rusting of iron involves a chemical reaction which is a combination of:
The displacement reaction between iron (III) oxide and a metal X is used for welding the rail tracks. Here X is:
The chemical reaction between Hydrogen sulphide and iodine to give Hydrogen iodide and sulphur is given below:
The reducing and oxidizing agents involved in this redox reaction are:
Three beakers labelled as A, B and C each containing 25 ml of water were taken. A small amount of NaOH, anhydrous CuSO4 and NaCl were added to the beakers A, B and C respectively. It was observed that there was an increase in the temperature of the solution contained in beakers A and B, whereas in case of beaker C, the temperature of the solution falls. Which one of the following statement(s) is (are) correct?
A substance ‘X’ is used in white-washing and is obtained by heating limestone in the absence of air. Identify ‘X’.
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