Flash Card
When two or more reactants combine in a reaction to form a single product, it is called a ........... reaction.
.............. is a chemical change.
A student takes 5 g of sodium hydroxide. He adds it to 100 mL of water taken in a plastic bottle and shakes the content well. Which of the following observation is CORRECT?
Why is the reductant in the following reaction Mno2 + 4HCI → MnCl2 + 2H2O + Cl2
The reaction of iron nail with copper sulphate solution is .............. reaction.
Which among the following is a double displacement reaction?
During the corrosion of iron, in the anode region, ............. .
If the product formed is an insoluble solid, then instead of (s), it can be indicated by the symbol .......... in the chemical equation.
What happens when phthalic anhydride taken in an evaporating dish is slowly heated on at low flame?
The conversion of ferrous sulphate into ferric sulphate is ............ reaaction.
Which of the following statements is INCORRECT?
Which of the following is formed when ethyl alcohol is treated with acidic potassium dichromate?
Which is the CORRECT statement?
When the positive charge on an ion increases and the negative charge on them decreases it is called as ............. .
The chemical reaction in which two or more products are formed from a single reactant is called .......... reaction.
Which of the following is NOT formed when Cu reacts with concentrated nitric acid?
The chemical formula of the rust is ............. .
Which of the following is a physical change?
Consider the formation of carbon dioxide gas by combustion of coal in air. Which of the following is CORRECT statement?
A student holds a magnesium (Mg) strip in pair of tongs and ignites the strip. On burning of magnesium metal in the presence of air, a while powder of ............ is formed.
Rusting of an iron nail is a ............ reaction.
Nascent oxygen is represented as ........... .
Identify INCORRECT statement regarding the conventions followed while writing a chemical equation.
When ........... is passed through fresh lime water, it turns milky.
The process due to which reddish colored coating is formed on iron is called as................ .
Food stuff cooked in oil or ghee will become rancid easily if .............. .
The change of Fe in ferrous ion is ............. .
On mixing aqueous solutions of silver nitrate and sodium chloride, a white precipitate is obtained. This reaction can be categorized as ........... reaction.
Which of the following is used as a catalyst to increase the rate of decomposition of KClO3 to liberate O2 gas?
In the chemical equation, the ............ written on the left hand side.
............. is used as catalyst in the conversion of vegetable oil to vanaspathi ghee
Sodium carbonate (Na2CO3) solution is added to the calcium chloride (CaCl2) solution. Which of the following is CORRECT observation?
What happens when a piece of zinc metal is added to copper sulphate solution?
When aluminium metal reacts with dillute hydrochloric acid, .............. gas is liberated.
Rate of a chemicla reaction........... .
