CBSE Class 10 Science Question Paper 2023
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Detailed pedagogical breakdown of each question in this board exam
Comprehensive question-by-question independently authored solutions for CBSE Class 10 Science Board Examination (2023). Questions are referenced directly to the official CBSE Question Paper.
When solid lead nitrate Pb(NO₃)₂ is heated strongly in a dry test tube, the brown fumes evolved and the residue left behind are respectively:
Which gas is evolved when dilute hydrochloric acid (HCl) reacts with sodium carbonate (Na₂CO₃), and what is the test to confirm this gas?
In the thermite process, which reducing agent is used to reduce iron(III) oxide (Fe₂O₃) for joining railway tracks?
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