EASY
10th ICSE
IMPORTANT
Earn 100

What happens when the dilute sulphuric acid is poured on a copper plate?

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Important Questions on Metals and Non-metals

MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 40
Silver articles become black on prolonged exposure to air. This is due to the formation of:
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 41
Zinc replaces copper from X solution because it is Y than copper. Substitute X and Y with correct options.
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 42
X is used for decorating sweets because it is Y in nature. Substitute X and Y with the correct choices.
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 43

Which of the following are not ionic compounds?

(i) KCl  (ii) HCl  (iii) CCl4  (iv) NaCl

HARD
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 44
The auto reduction process is used for the extraction of:
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 45
During electrolytic refining of zinc, it:
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 46
Which of the following properties is not generally exhibited by ionic compounds?
EASY
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 47
The process of heating an ore, in the absence or limited supply of air, below its melting point is called: