CBSE Class 10 Science
Free CBSE Class 10 Science previous year question style practice for Physics, Chemistry and Biology exam preparation.
Explore Complete Science PrepPractice, PYQs, competency questions, syllabus and revision resources in one subject map.
Resource status
Subject
Science
Questions
3
More questions can be added chapter by chapter while students keep getting the same simple resource page.
Answer
Salt, water and carbon dioxide are formed.
Solution
Acid + metal carbonate gives salt + water + carbon dioxide. The gas can be tested by passing it through lime water.
Answer
Concentric circles.
Solution
Magnetic field lines around a straight current carrying conductor form concentric circles centered on the conductor.
Answer
It helps maintain efficient oxygen supply and supports high energy needs.
Solution
Humans need constant energy to maintain body temperature and activity. Complete separation helps oxygen-rich blood reach tissues efficiently.
