NCERT Lab Manual XVI — task. Science CBSE, Class 10.

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Answer the following questions:

1. Consider the changes; \(2HCl\)(g) → \(H_2\)(g) + \(Cl_2\)(g). Which according to you is exothermic change?

This is exothermic reaction.
This is photothermic reaction.
This is hydrothermic reaction.
This is endothermic reaction.

2. What precautions did you take while measuring the temperature of a reaction mixture?

Wearing cloths and using tongs for taking reaction mixture.
Wearing gloves and using cloths for taking reaction mixture.
Wearing papers and using cloths for taking reaction mixture.
Wearing gloves and using tongs for taking reaction mixture.

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