ICSE 8 Chemistry
Chemical Reactions
Question 1:
Exothermic reactions can continue without external supply of energy. Justify with the help of suitable chemical reaction. [Level: Difficult]
Question 2:
The neutral gas released during thermal decomposition of potassium nitrate is
(c) N2O
(d) O2 [Level: Moderate]
Question 3:
The displaced product of displacement reaction of sodium & water
(a) O2
(b) Na2O
(d) H2 [Level: Moderate]
Question 4:
Balance the below given reaction & state the type of reaction:
H2O2 à H2O + O2 [Level: Easy]
Question 5:
Which is the most reactive element among H & Mg in this equation:
Mg + H2SO4 à MgSO4 + H2 [Level: Moderate]
Question 6:
Direct combination reaction of phosphorus pentoxide with water gives
(a) H3PO3
(c) H3PO2
(d) HPO4 [Level: Difficult]
Question 7:
Give an example of reaction where both evolution of heat & light is involved. [Level: Moderate]
Question 8:
Reaction of coke with steam to give water gas is which type of reaction?
(a) Decomposition
(b) Combination
(c) Endothermic
(d) Exothermic [Level: Difficult]
Question 9:
CaO + H2O à Ca(OH)2 + heat
Above given reaction is an example of
I. Synthesis reaction
II. Decomposition reaction
III. Exothermic reaction
IV. Endothermic reaction
(a) only I
(b) only III
(c) only IV
(d) both I & III [Level: Difficult]
Question 10:
Give an example of endothermic reaction having S as one of the reactants. [Level: Moderate]
Question 11:
Which among the following is a chemical change?
(b) Dissolution of salt in water
(c) Solid dry ice to gaseous carbon dioxide
(d) Wetting of window panes in winter [Level: Easy]
Question 12:
Give an example of decomposition reaction in which products formed are
(a) 2 different elements
(b) an element & a compound [Level: Moderate]
Question 13:
The chemical change involving zinc and aqueous copper sulphate illustrates which of the following reaction?
(a) Combination
(b) Double displacement
(c) Single displacement
(d) Combustion [Level: Moderate]
Question 14:
Choose the option corresponding to reaction which involves change in state:
(a) NH4Cl à NH3 + HCl
(b)
(c)
(d) [Level: Difficult]
Question 15:
Give an example of neutralisation reaction. [Level: Easy]
Question 16:
Above given reaction is an example of
I. Synthesis reaction
II. Decomposition reaction
III. Electrochemical reaction
IV. Displacement reaction
(a) only I
(d) both II & III [Level: Difficult]
Question 17:
Which among the following is an example of endothermic reaction?
(a)
(b)
(c) N2 + 3H2 ⇌ 2NH3 + heat
(d) [Level: Moderate]
Question 18:
Shreya burnt coal in air. Which type of reaction did she carried out?
(a) Decomposition
(b) Displacement
(c) Double displacement
(d) Combination [Level: Easy]
Question 19:
Which among the following chemical reaction is correct?
(a) BaCl2(aq) + H2SO4(aq) à BaHCl(s) + 2H2SO4(aq)
(b)
(c)
(d)
[Level: Moderate]
Question 20:
Give 2 examples of acidic & basic oxides. [Level: Easy]
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All About Daily Practice Problems on ICSE 8 Chemistry Chemical Reactions NCERT Chapter 6
Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on ICSE 8 Chemistry Chemical Reactions NCERT Chapter 6 useful.
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