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