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Digitization help student to explore and study their academic courses online, as this gives them flexibility and scheduling their learning at their convenience. Kidsfront has prepared unique course material of Science & Technology Daily Life Chemistry for General Knowledge Practice student. This free online Science & Technology study material for General Knowledge Practice will help students in learning and doing practice on Daily Life Chemistry topic of General Knowledge Practice Science & Technology. The study material on Daily Life Chemistry, help General Knowledge Practice Science & Technology students to learn every aspect of Daily Life Chemistry and prepare themselves for exams by doing online test exercise for Daily Life Chemistry, as their study progresses in class. Kidsfront provide unique pattern of learning Science & Technology with free online comprehensive study material and loads of General Knowledge Practice Science & Technology Daily Life Chemistry exercise prepared by the highly professionals team. Students can understand Daily Life Chemistry concept easily and consolidate their learning by doing practice test on Daily Life Chemistry regularly till they excel in Science & Technology Daily Life Chemistry.


Daily Life Chemistry
Who introduce simple symbols to denote the valence shell electrons in an atom.

a) Gilbert Newton Lewis
b) Johannes van der waals
c) John Dalton
d) Sir Issac Newton



✔Answer
Correct Answer Is : Gilbert Newton Lewis
Solution Is :
Write the empricial formula of Na,O

a) Na2O
b) NaO
c) Na2O2
d) Na3O


✔Answer
Correct Answer Is : Na2O
Solution Is :
In NO-3 ion, the number of bond pairs and lone pairs of electrons on nitrogen atom are

a) 1,0
b) 4,0
c) 2,3
d) 5,1


✔Answer
Correct Answer Is : 4,0
Solution Is :
Identify the type of reaction :- CH4 + 2O2 → CO2 + 2H2O

a) Combustion reaction and oxidation reaction
b) Displacement reaction
c) Combination reaction
d)  Synthesis reaction


✔Answer
Correct Answer Is : Combustion reaction and oxidation reaction
Solution Is :
Identify the type of reaction :- CuSO4 + Zn → ZnSO4 + Cu

a) Displacement reaction
b) Decomposition reaction
c)  Single displacement reaction
d) Combination reaction


✔Answer
Correct Answer Is : Displacement reaction
Solution Is :
Identify the type of reaction :- CaO + H2O → Ca(OH)2

a) Combination reaction
b) Double displacement reaction
c) Acid-base reaction
d) Displacement reaction



✔Answer
Correct Answer Is : Combination reaction
Solution Is :
Identify the type of reaction :- Pb(NO3)2 + 2KI -→PbI2 + 2KNO3

a) Double displacement reaction
b) Combustion reaction and oxidation reaction
c) Acid-base reaction
d) Displacement reaction



✔Answer
Correct Answer Is : Double displacement reaction
Solution Is :
Fe2 O3 + 2Al2 O3 + 2Fe is an example of a

a) Double displacement reaction
b) Combustion reaction and oxidation reaction
c) Displacement reaction
d) Combination reaction


✔Answer
Correct Answer Is : Displacement reaction
Solution Is :
Write the balance chemical equation :- Calcium Hydroxide + carbon dioxide →Calcium carbonate +water

a) Ca(OH)2 (aq) + CO2(g)→ CaCO3 (s) + H2O(l)
b) Ca(OH)2 (aq) + CO2(g)→ CaC3 (s) + H2O(l)
c) Ca(OH)2 (g) + CO2(aq)→ CaCO3 (s) + H2O(l)
d) Ca(OH)2 (aq) + CO2(g)→ Ca2CO3 (s) + H2O(l)


✔Answer
Correct Answer Is : Ca(OH)2 (aq) + CO2(g)→ CaCO3 (s) + H2O(l)
Solution Is :
Which gas is evolved when sodium hydrogencarbonate reacts with dilute hydrochloric acid?

a) Carbon dioxide
b) Heluim
c) Methane
d) Carbon monoxide


✔Answer
Correct Answer Is : Carbon dioxide
Solution Is :
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