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8th CBSE
IMPORTANT
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Important Questions on Some Important Elements and their Compounds

EASY
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 7 - Some Important Elements and their Compounds>PRACTICE QUESTIONS (COMPETITION WING)>Q 25
Clay shows plasticity when 
MEDIUM
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 7 - Some Important Elements and their Compounds>PRACTICE QUESTIONS (COMPETITION WING)>Q 26

Which of the following is false regarding epoxy resin? 

HARD
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 7 - Some Important Elements and their Compounds>PRACTICE QUESTIONS (COMPETITION WING)>Q 27
When Mg is burnt in the atmosphere of an element X, a yellow powder is obtained. When this is dissolved in water, it gives a compound Y with a pungent smell. What are X and Y? 
MEDIUM
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 7 - Some Important Elements and their Compounds>PRACTICE QUESTIONS (COMPETITION WING)>Q 28
The reducing property of SO2 is shown in which of the following reactions? 
MEDIUM
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 7 - Some Important Elements and their Compounds>PRACTICE QUESTIONS (COMPETITION WING)>Q 29
The transparency of the glass is attributed to which of the following properties of glass? 
MEDIUM
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 7 - Some Important Elements and their Compounds>PRACTICE QUESTIONS (COMPETITION WING)>Q 30
A soil is supplied with ammonium phosphate fertiliser. Which of the following types of bacteria is not involved in the process of the absorption of this fertiliser by plants? 
EASY
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 7 - Some Important Elements and their Compounds>PRACTICE QUESTIONS (COMPETITION WING)>Q 31
The gas liberated when concentrated sulphuric acid is treated with copper is 
EASY
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 7 - Some Important Elements and their Compounds>PRACTICE QUESTIONS (COMPETITION WING)>Q 32
A soil is highly deficient in nitrogen. The crop requires nitrogen for immediate requirement as well as long-term requirement. Which among the following is the most suitable fertiliser for the soil?