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
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Iron and rust are the same substances.
The chemical name of baking soda is ______.
How do the following help in bringing about a chemical change?
catalyst .
Fill in the blank
A catalyst either ................or ............... the rate of a chemical change but itself remains ............... at the end of the reaction.
Classify the following reaction as combination, decomposition, displacement, precipitation and neutralization. Also balance the equation.
\[\ce{NH3_{(g)} + HCl_{(g)} -> NH4Cl_{(s)}}\]
Write the missing reactants and products and balance the equations.
................+ HCI `→` NaCI + `"H"_2"O"` + .........................
Is kerosene an electrolyte or a non-electrolyte ?
What are the characteristics of a chemical reaction ? A chemical reaction is characterised by an irreversible change in which a new substance is formed.
Explain the following reaction with one suitable example of Combination reactions .
Write the chemical reaction where the following changes are observed.
Colour change is noticed
Multiple choice:
A reaction of a type: AB + CD → AD + CD, involves
What is a chemical change? Give two examples of chemical change?
Name: A brown gas
Give a chemical test to distinguish between the following gases.
NH3 and SO2
Distinguish by heating the following in dry test tubs.
Zinc carbonate, Copper carbonate and lead carbonate.
Complete the table given below.
| Addition of dil. H2SO4 to FeS | Odour of gas evolved |
Complete the table given below.
| Heat on sodium chloride | Colour imparted to flame during flame test |
When lithium metal is placed in hydrochloric acid, _______ gas is evolved.
On heating calcium carbonate gets converted into calcium oxide and carbon dioxide.
(a) Is this a physical or a chemical change?
(b) Can you prepare one acidic and one basic solution by using the products formed in the above process? If so, write the chemical equation involved.
______ is a chemical substance is used in whitewashing.
