Advertisements
Advertisements
प्रश्न
Give a word equation for the following reaction.
A salt which reacts with ammonium hydroxide to give a reddish brown precipitate.
उत्तर
Ferric chloride + Ammonium hydroxide → Ferric hydroxide (reddish brown precipitate) + Ammonium chloride
\[\ce{FeCl3 + 3NH4OH -> Fe(OH)3↓ + 3NH4Cl}\]
APPEARS IN
संबंधित प्रश्न
What are (i) positive catalysts and (ii) negative catalysts? Support your answer with one example for each of them.
Classify the following reaction as combination, decomposition, displacement, precipitation and neutralization. Also balance the equation.
\[\ce{NH3_{(g)} + HCl_{(g)} -> NH4Cl_{(s)}}\]
TRUE \ FALSE
Temperature at which a liquid starts boiling is known as the boiling point of that liquid. True or false ?
Differentiate between in Chemical reaction and chemical equation.
Fill in the blank:
The substances which undergo chemical change are called _______
Fill in the blank:
During a chemical reaction transfer of ________ takes place.
Copper carbonate when heated, it turns :
Write balanced chemical equations for the reactions represented by word equations in the conditions for chemical reaction.
State what you would observe when the following substance is heated in a glass test tube red lead.
What is the reaction called when oxidation and reduction take place simultaneously? Explain with one example.
Match the pairs.
a. | Photosynthesis | i. | Tendency to lose electrons |
b. | Water | ii. | Reactant in combustion process |
c. | Sodium chloride | iii. | Chemical change |
d. | Dissolution of salt in water | iv. | Covalent bond |
e. | Carbon | v. | Ionic bond |
f. | Fluorine | vi. | Physical change |
g. | Magnesium | vii. | Tendency to form anion |
Explain the term reactant and product giving examples.
Give an example of a reaction where the following are involved
Electricity
Give reason for the following:
Molybdenum is used in the manufacture of ammonia.
Select the correct answer for the following options:
The basic gas obtained when two gases react in presence of a catalyst and the reaction is exothermic.
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A white solid which evolves two colourless gases which on cooling combine and condense on the cooler parts of the test tube.
Explain with the help of balanced equations, how precipitation reactions are used for identifying the positive radicals in three different salts, each having a different cation [positive ion].
Differentiate between the following:
Neutralization reaction and a precipitation reaction.
When an aqueous solution of potassium chloride is added to an aqueous solution of silver nitrate, a white precipitate is formed. Give the chemical equation of this reaction.
______ change results in the change of the substance.
______ is a natural indicator.
Beating an egg to make a cake is a ______.
When magnesium is burnt in the air, a new substance is formed which is ______.
Is the conversion of milk into ice cream a chemical change?
How would you show that the settling of curd is a chemical change?
Write a note on the following:
Curdling of milk
When carbon dioxide is passed through lime water ______.
What is the difference between reactants and products?
Define the following term:
Chemical change