1 one of the following does not happen during a chemical reaction. This is
Chemical reactions and Equations

Quiz
•
Chemistry
•
10th Grade
•
Medium
shebina sunil
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Breaking of old chemical bonds and formation of new chemical bonds
Formation of new substances with entirely different properties
Atoms of one element change into those of another element to form new products.
Rearrangement of atoms takes place to form new products.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2. Which of the following does not involve a chemical reaction?
Digestion of food in our body
Process of respiration
Burning of candle wax when heated
Melting of candle wax on heating
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
ou are given the solution of lead nitrate. In order to obtain a yellow precipitate you should mix with it a solution of potassium -----------------------
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An acid which can decolourise purple coloured potassium permanganate solution is
Sulphuric acid
Hydrochloric acid
Citric acid
Carbonic acid
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
5.The chemical reaction between quicklime and water is characterized by
Evolution of hydrogen gas
Formation of slaked lime precipitate
Change in temperature of mixture
Change in colour of the product
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
6.The chemical equation are balanced to satisfy one of the following laws in chemical reactions. This law is known as
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
7.One of the following is an exothermic reaction. This is
Electrolysis of water
Conversion of limestone into quicklime
Process of respiration
Process of photosynthesis
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