Question

following statements are given by 4 Students Rahul, Rita, Manu and Kritika
Rahul: crystals of Lead Nitrate when heated strongly produce a reddish-brown gas
Rita: production of nitric oxide by heating nitrogen and oxygen at high temperature is an exothermic process
Manu: slaking of lime is an endothermic process
Kritika: when hydrogen is passed over heated black copper oxide, oxidation and reduction reactions occur simultaneously.
the correct statements are given by
A. Rita and manu only
B. Kritika only
C. Rahul and Kritika only
D. Rahul only

Answer 1

rahul and kritika gave correct statement