EASY
10th CBSE
IMPORTANT
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A downward arrow with product formed in the reaction suggests the insoluble nature of product.

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Important Questions on Chemical Reactions and Equations

EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 8>Q 17
FeSO4.7H2O has green coloured crystals.
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 8>Q 18
Burning of a species in air leads usually an exothermic change.
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 8>Q 19
Pure water is good conductor of current.
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 8>Q 20
KI (aq.) on mixing with Pb(NO3)2 (aq.) gives yellow precipitate.
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 8>Q 21
Carbon dioxide and water react in presence of sunlight and chlorophyll to form sugar.
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 8>Q 22
Chlorophyll is green colouring material usually found in plants.
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 8>Q 23
Respiration is an exothermic change.
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 1 - Chemical Reactions and Equations>Exercise 8>Q 24
Marble is calcium carbonate.