Advertisements
Advertisements
प्रश्न
Which of the following is not an “element + element → compound” type reaction?
पर्याय
C(s) + O2(g) → CO2(g)
2K(s) + Br2(l) → 2KBr(s)
2CO(g) + O2(g) → 2CO2(g)
4Fe(s) + 3O2(g) → 2Fe2O3(s)
Advertisements
उत्तर
2CO(g) + O2(g) → 2CO2(g)
APPEARS IN
संबंधित प्रश्न
TRUE \ FALSE
The evolution of a gas during a chemical reaction is shown by an arrow pointing downwards. True or false ?
Fill in the blank:
The substances which undergo chemical change are called _______
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)
Chlorine (Cl2) molecule is formed by ______ of electrons between two chlorine atoms.
State the conditions necessary for a chemical change or reaction.
Give an example of a reaction where the following are involved
Light
Write the chemical reaction where the following changes are observed.
Precipitate is formed
Select the correct answer for the following options:
The pale blue precipitated obtained when copper [II] sulphate reacts with sodium hydroxide.
State the following reaction represent oxidation or reduction.
\[\ce{Cu++->Cu}\]
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to sodium sulphite.
The chemical name of baking soda is sodium bicarbonate.
