Which type of the following chemical reaction is CaO + CO2 → CaCO2:...?

PPSC Past Papers

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Which type of the following chemical reaction is CaO + CO2 → CaCO2:...?

(A) Combination Reaction

(B) Decomposition Reaction

(C) Neutralization Reaction

(D) None

✅ Correct Answer: Combination Reaction

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Which is the best indication that a chemical reaction has taken place...?

(A) Blue powder turns water blue

(B) Metal budding when placed in an unknown liquid

(C) A white substance dissolving in water

(D) None

✅ Correct Answer: Metal budding when placed in an unknown liquid

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Enzymes catalyze chemical reaction by _____ the activation energy....?

(A) Raising

(B) Lowering

(C) Maintaining

(D) Ignoring

✅ Correct Answer: Lowering

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Which type of the following chemical reaction is CaO + CO2 → CaCO2:...? Mcqs

PPSC Past Papers