Question

NaCl + AgNO₃ --> NaNO₃ + AgCl, Which type of reaction is this

Double displacement reaction
Precipitation reaction
Both one and two
Single displacement reaction

17. Limestone decomposes to form which products

Quicklime
Baking soda
Soda lime
None of these

18. When lead nitrate is reacted with sodium hydroxide, chalky white precipitate is formed. It detects presence of which ion

Na⁺
OH⁻
NO₃⁻
Pb²⁺

19. In which reaction reactant breaks in presence of heat to give a product

Decomposition reaction
Chemical decomposition reaction
Thermal decomposition reaction
Double decomposition reaction

20. 2H₂O₂ ⟶ Complete the reaction

2H₂ + O₂
2H₂O + O₂
H₂ + O₂
H₂O + O₂​

Answer 1

Answer:

Both one and two

Quicklime

I don't know OH⁻ ya Pb²⁺ me se ek

Thermal decomposition reaction

2H₂O + O₂

Answer 2

Answer:

1. double displacement reaction
2. none of this
3. NO3
4. thermal decomposition reaction
5. 2H2+o2