List of top Chemistry Questions on Chemical Reactions asked in TS POLYCET

The volume of CO\(_2\) liberated in litres at STP when 25 g of CaCO\(_3\) is treated with dilute HCl containing 14.6 g of HCl is:
Which one of the following processes involves chemical change?
What is the symbol used in a chemical equation to represent the gas evolved in a reaction?
Oxygen gains ____________________ electrons during the chemical changes.
The reaction of an acid with a base to give a salt and water is known as
The gas formed when Zn is treated with dil. HCl is
The compound formed in the following reaction is
\(\text{CH}_3-\text{CH}_2-\text{OH} \xrightarrow[\text{Conc. H}_2\text{SO}_4]{170^\circ\text{C}} \text{?}\)
In endothermic reaction, heat is
Mixing acid to water is
Bleaching Powder is formed from
When the equation,\(\text{Na} + \text{H}_2\text{O} \rightarrow \text{NaOH} + \text{H}_2\) is balanced,what is the coefficient for 'Na' ?
The chemical reaction in which heat is absorbed is called
The reaction that takes place in Thermite process is
What does the symbol '∆' represent in a chemical equation ?
The product formed when quick lime reacts with water is
Which of the following metals liberates hydrogen gas when reacted with dil. HCl?