Introduction to Chemistry

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

States of Matter

Subtopic

States of Matter under Introduction to Chemistry for Grade 7 CBSE.

Preview questions (no answers)

1.
$Observe the flow of state changes. Identify process 'Z'.$
A. $Melting$
B. $Freezing$
C. $Boiling$
D. $Sublimation$
2.
$Which of the following is the standard unit for measuring volume?$
A. $Kilogram$
B. $Meter$
C. $Liter$
D. $Second$
3.
$When we blow air into a balloon, it expands because:$
A. $Air has mass$
B. $Air occupies space$
C. $Air has no weight$
D. $Air is visible$
4.
$Which of the following substances does NOT have a fixed volume?$
A. $Milk$
B. $Wood$
C. $Oxygen$
D. $Mercury$
5.
$Identify the state change occurring in the diagram below where particles gain significant energy and move far apart.$
A. $Freezing$
B. $Condensation$
C. $Vaporization$
D. $Deposition$
6.
$Which of the following factors affects the rate of evaporation?$
A. $Surface area$
B. $Temperature$
C. $Humidity$
D. $All of these$
7.
$The intermolecular space is maximum in:$
A. $Steam$
B. $Ice$
C. $Water$
D. $All are same$
8.
$Which property allows us to smell a hot sizzling food several meters away?$
A. $High density of food particles$
B. $High rate of diffusion at high temperatures$
C. $Sublimation of the food$
D. $The gravity acting on the food particles$
9.
$The rate of evaporation increases with:$
A. $An increase in surface area$
B. $A decrease in temperature$
C. $An increase in humidity$
D. $A decrease in wind speed$
10.
$Which of the following is considered the fourth state of matter?$
A. $Plasma$
B. $Bose-Einstein Condensate$
C. $Gas$
D. $Solid$

Download the worksheet for Introduction to Chemistry - States of Matter to practice offline. It includes additional chapter-level practice questions.

Element Molecule Compound and Mixture

Subtopic

Element Molecule Compound and Mixture under Introduction to Chemistry for Grade 7 CBSE.

About Topic & Revision

Preview questions (no answers)

1.
$Which of the following represents a molecule of a compound?$
A. $O_{2}$
B. $N_{2}$
C. $NH_{3}$
D. $H_{2}$
2.
$F$
A. $Ferrum$
B. $Fluorine$
C. $Francium$
D. $Fermium$
3.
$Which of these is a triatomic molecule?$
A. $O_{2}$
B. $O_{3}$
C. $P_{4}$
D. $S_{8}$
4.
$The symbol for Iodine is:$
A. $Id$
B. $In$
C. $I$
D. $Io$
5.
$Which method is used to separate sawdust from a mixture of sawdust and water?$
A. $Magnetic separation$
B. $Evaporation$
C. $Filtration$
D. $Sublimation$
6.
$Which of the following is the symbol for Zinc?$
A. $Zi$
B. $Zn$
C. $Z$
D. $Ni$
7.
$A substance is found to have a fixed ratio of its components and can only be separated by electrolysis. It is most likely a/an:$
A. $Element$
B. $Compound$
C. $Mixture$
D. $Alloy$
8.
$The symbols for Copper and Cobalt are often confused. What are they respectively?$
A. $Co, Cu$
B. $Cp, Cb$
C. $Cu, Co$
D. $Cu, C$
9.
$Which formula correctly represents a molecule containing 2 atoms of Aluminum, 3 atoms of Sulfur, and 12 atoms of Oxygen?$
A. $Al_2S_3O_{12}$
B. $Al_2(SO_4)_3$
C. $Al_3(SO_2)_2$
D. $Al_2(SO_3)_3$
10.
$Which of these elements is a liquid at room temperature and is a non-metal?$
A. $Mercury$
B. $Bromine$
C. $Gallium$
D. $Iodine$

Download the worksheet for Introduction to Chemistry - Element Molecule Compound and Mixture to practice offline. It includes additional chapter-level practice questions.

Introduction to Chemistry

States of Matter

❓Preview questions (no answers)

Element Molecule Compound and Mixture

❓Preview questions (no answers)

Preview questions (no answers)

Preview questions (no answers)