EASY
7th CBSE
IMPORTANT
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Water shows concave meniscus in a narrow glass tube. This is because:

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Important Questions on Classification of Matter

EASY
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 1 - Classification of Matter>PRACTICE QUESTIONS (COMPETITION WING)>Q 48
Iron powder and powder of rust are taken in two containers X and Y, respectively. Dilute sulphuric acid is added to both the containers. Then:
EASY
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 1 - Classification of Matter>PRACTICE QUESTIONS (COMPETITION WING)>Q 49

X, Y and Z containers are placed at 25°C. Then, decrease in temperature is more in ______.

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EASY
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 1 - Classification of Matter>PRACTICE QUESTIONS (COMPETITION WING)>Q 50
The interconversion involved in usage of 'odonil' in a washroom is _____.
EASY
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 1 - Classification of Matter>PRACTICE QUESTIONS (COMPETITION WING)>Q 51
Dogs stretch out their tongues generally in summer because:
EASY
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 1 - Classification of Matter>PRACTICE QUESTIONS (COMPETITION WING)>Q 52
A mixture contains three components namely camphor powder, common salt and water. These can be separated by:
EASY
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 1 - Classification of Matter>PRACTICE QUESTIONS (COMPETITION WING)>Q 53
Thermal expansion of solids is the least among the three states of matter due to:
EASY
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 1 - Classification of Matter>PRACTICE QUESTIONS (COMPETITION WING)>Q 54
Water shows convex meniscus in narrow _____ and _____ tubes.
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 1 - Classification of Matter>PRACTICE QUESTIONS (COMPETITION WING)>Q 55
Among the following, a pair of a compound and an element, respectively is: