Chemistry First Term model question paper answer key based on new textbook SCERT
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Download SCERT a new model question paper for Class 10 Chemistry for the First Term Onam Examination 2025. This paper is based on the revised Chemistry syllabus introduced for the 2025–26 academic year. The officially released model paper reflects the updated content and exam pattern. More model question papers in Chemistry will be made available soon on www.educationobserver.com. Stay tuned for further updates. 

Some model question questions from the STD 10 SCERT Official Onam exam model papers 2025

1. The atomic number of an element is 16.
a.  Write the subshell electron configuration of the given element.
b.  Find the value of the quantum numbers n and l of the electrons in the  outermost subshell of it.     
c.  Find the number of orientations of the outermost subshell.

i.  When carbon monoxide reacts with hydrogen in presence of a catalyst at 573K, the product A is obtained.
ii. When A reacts with carbon monoxide in the presence of a catalyst, the product B is obtained.
a.  Identify the compounds A and B.
b.  Write the structural formula of the homologue of B having one carbon atom.  


Download the latest STD 10 Onam exam Physics question paper from the links below
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