Advertisements
Advertisements
Question
Complete and balance the following reaction:
\[\ce{NH3 + O2 ->[\Delta]}\]
Solution
\[\ce{NH3 + O2 ->[Pt] 4NO + 6H2O }\]
APPEARS IN
RELATED QUESTIONS
Define precipitation.
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Miscible liquids having slightly different boiling points can be separated by the
- evaporation
- distillation
- fractional distillation
- sedimentation
Define electrolysis.
Fill in the blank:
In some chemical reactions an insoluble ________ is formed when two solutions are mixed.
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.
Explain by writing a word equation.
Limestone powder disappears on adding to dilute hydrochloric acids.
Give an example of a reaction where the following are involved
Electricity
Distinguish by heating the following in dry test tubs.
Ammonium Chloride and iodine.
What do you observe when CO2 is passed through lime water first and then a little in excess.
Write your observation and a balanced equation in the case of the following substances being heated.
Ammonium chloride
Name the following:
The type of change physical or chemical involved – ‘during respiration in human beings’.
Give balanced equation for the following conversion affected by heat alone on the substance:
Zinc carbonate to zinc oxide
Complete the table given below.
Heat on copper carbonate | Test for gas evolved |
Explain the term chemical reaction with special reference to reactants and products.
Limestone contains ______ mainly.
When lithium metal is placed in hydrochloric acid, _______ gas is evolved.
______ change results in the change of the substance.
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
Are these changes chemical in nature?
Write the characteristics of chemical change.
Write the effects of chemical reactions.