Chemical Reacti...

What are the coefficients of the correctly balanced equations? ----Fe₂O₃    +  ----CO → ----Fe    +    ---CO₂

CaO- calcium Oxide reaction with water is regarded as exothermic. A student mixes these two products in a test tube and touches its side surface. Which of the following statement correctly describes the student's observation?

Which one is a double displacement reaction?

Which of the following are exothermic processes-

1. Reaction of water with quick lime
2. Dilution of an acid
3. Evaporation of water
4. Sublimation of camphor crystals

Zinc + Sulphuric acid → Zinc sulphate + (X) What will be the product "X"?

Which of the statements about the reaction below are incorrect?     2PbO(s) + C(s) →  2Pb(s) + CO2 (g)   i. Lead is getting reduced.   ii. Carbon dioxide is getting oxidized.  iii. Carbon is getting oxidized.  iv. Lead oxide is getting reduced.

Which of the following is not a balanced equation?

Aluminum reacts with copper sulphate to produce

What happens when dilute HCl is added to iron filings? Tick the correct answer.

Solid calcium oxide reacts vigorously with water to form calcium hydroxide accompanied by liberation of heat. This process is called slaking of lime. Calcium hydroxide dissolves in water to form its solution called lime water. Which among the following is (are) true about slaking of lime and the solution formed ?   i. It is an endothermic reaction   ii. It is an exothermic reaction   iii. The pH of the resulting solution will be more than seven   iv. The pH of the resulting solution will be less than seven