Water

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Composition of Water

Subtopic

Composition of Water under Water for Grade 7 ICSE.

About Topic & Revision

Preview questions (no answers)

1.
$During the decomposition of water, the volume of Hydrogen collected is _______ the volume of Oxygen.$
A. $Half$
B. $Double$
C. $Equal to$
D. $Triple$
2.
$Which of these is a gaseous form of water found in the atmosphere?$
A. $Snow$
B. $Rain$
C. $Water vapor$
D. $Dew$
3.
$Approximately what percentage of the human body is composed of water?$
A. $10\%$
B. $30\%$
C. $70\%$
D. $95\%$

Download the worksheet for Water - Composition of Water to practice offline. It includes additional chapter-level practice questions.

Physical and Chemical Properties

Subtopic

Physical and Chemical Properties under Water for Grade 7 ICSE.

About Topic & Revision

Preview questions (no answers)

1.
$The taste of drinking water is mainly due to:$
A. $Presence of bacteria$
B. $Dissolved gases and minerals$
C. $The hydrogen atoms$
D. $The high temperature$
2.
$Which gas dissolved in water is used by aquatic plants for photosynthesis?$
A. $Oxygen$
B. $Carbon dioxide$
C. $Hydrogen$
D. $Methane$
3.
$H_{2}O$
A. $2 molecules of water$
B. $2 atoms of oxygen$
C. $2 atoms of hydrogen$
D. $2 types of elements$

Download the worksheet for Water - Physical and Chemical Properties to practice offline. It includes additional chapter-level practice questions.

Solutions and Solubility

Subtopic

Solutions and Solubility under Water for Grade 7 ICSE.

About Topic & Revision

Preview questions (no answers)

1.
$What is the term for the component that gets dissolved in a solvent to form a solution?$
A. $Solute$
B. $Residue$
C. $Filtrate$
D. $Solvent$
2.
$What is the name of the process when a substance loses its moisture or water of crystallization?$
A. $Hydration$
B. $Dehydration$
C. $Dissolution$
D. $Saturation$
3.
$If you keep adding salt to a fixed amount of water and it stops dissolving at room temperature, the solution has become:$
A. $Dilute$
B. $Unsaturated$
C. $Saturated$
D. $Anhydrous$

Download the worksheet for Water - Solutions and Solubility to practice offline. It includes additional chapter-level practice questions.

Water Pollution and Treatment

Subtopic

Water Pollution and Treatment under Water for Grade 7 ICSE.

About Topic & Revision

Preview questions (no answers)

1.
$Which step in a municipal water treatment plant is designed to remove very small suspended particles that did not settle during sedimentation?$
A. $Bar screening$
B. $Sand filtration$
C. $Aeration$
D. $Oil skimming$
2.
$Pure water is which of the following?$
A. $Tasteless, colorless, and odorless$
B. $Salty and blue$
C. $Sweet and white$
D. $Bitter and green$
3.
$Detergents contain which of the following that can lead to water pollution?$
A. $Vitamins$
B. $Phosphates$
C. $Proteins$
D. $Iron$

Download the worksheet for Water - Water Pollution and Treatment to practice offline. It includes additional chapter-level practice questions.

Water - ICSE Class 7 Science Notes & Revision | Krit.club