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QuizCraft AI • Assessment WorksheetA4 Standard Format
CBSE Class 10 Science: Chemical Reactions & Electricity
Subject: Science (Physics & Chemistry)•Level: Class 10 (CBSE)•Difficulty: MEDIUM•Total Questions: 3
Student Name:
Date:
Roll / ID No:
Score:/ 3
Instructions: Board pattern assessment. Select the single best answer for each question.
1. When aqueous solutions of barium chloride and sodium sulphate react, an insoluble white precipitate is formed. What is this precipitate?
ABarium sulphate (BaSO4)
BSodium chloride (NaCl)
CBarium sulphite (BaSO3)
DSodium barium complex
2. A copper wire has diameter 0.5 mm and resistivity 1.6 * 10^-8 Ohm*m. What length of this wire is required to give a resistance of 10 Ohms?
A122.7 meters
B12.27 meters
C61.3 meters
D245.4 meters
3. Which of the following processes represents an exothermic chemical reaction?
AQuicklime reacting with water (CaO + H2O)
BPhotosynthesis in green plants
CDissolution of ammonium chloride in water
DElectrolysis of water
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