Advertisements
Advertisements
Question
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.
Options
Hydrogen
Copper [II] oxide
Oxygen
Copper [II] hydroxide
Ammonia
Advertisements
Solution
Hydrogen
APPEARS IN
RELATED QUESTIONS
Write the missing reactants and products and balance the equations.
................+ HCI `→` NaCI + `"H"_2"O"` + .........................
TRUE \ FALSE
Electrolytic refining is a method in which a thin coating of a metal is done over another metal.
How is precipitate formation in a chemical reaction indicated?
What are the characteristics of a chemical reaction ? A chemical reaction is characterised by an irreversible change in which a new substance is formed.
Fill in the blank
A change in which the substance can be brought back to its original state is called a _______ change.
Copper carbonate when heated, it turns :
Explain the following reaction with one suitable example of Double decomposition reaction.
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
The white particles of baking soda disappear when put in lemon juice. This means that it is a ______ change.
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Potassium fluoride
Explain the term reactant and product giving examples.
Give an example of a reaction where the following are involved
Catalyst
Give an example of the following chemical change.
A reaction where colour change is noticed
Give a chemical test to distinguish between the following gases.
SO2 and Cl2
Select the correct answer for the following options:
The pale blue precipitated obtained when copper [II] sulphate reacts with sodium hydroxide.
Complete the table given below.
| Heat on iodine crystals | Colour of vapours evolved |
Higher order Thinking question
A very hot glass on putting in cold water cracks. What does this change indicate?
State whether the following statement is true or false:
When a candle burns, both physical and chemical changes take place.
Write word equations for two chemical reactions with the help of materials given in the box.
| Air, copper sulphate, iron, vinegar, iron oxide, carbon dioxide, iron sulphate, copper, lime water, water |
Galvanization is a process in which ______ is coated as a layer of iron.
What is thermochemical reactions?
