Day 1: CBSE Class 10 Science
5 questions. Try each one first, then open its answer.
Question 1
Magnetic Effects of Electric Current. Asked 5 times: 2022*, 2023*, 2024*, 2025*, 2026 (* = numbers or wording changed that year)
39 (a)(i) What is a solenoid ? Draw a diagram showing the magnetic field pattern due to a current-carrying solenoid (inside and outside). (ii) Name any two factors on which the magnitude of the magnetic field due to a current-carrying solenoid depends. (iii) A current-carrying solenoid is stretched and converted into a straight wire carrying current. Draw a diagram showing the magnetic field pattern around it and mark the direction of the magnetic field.Question 2
Acids, Bases and Salts. Asked 4 times: 2023*, 2024*, 2025*, 2026 (* = numbers or wording changed that year)
23When zinc reacts with , the product formed is :Tap an option to check your answer.
Question 3
Chemical Reactions and Equations. Asked 4 times: 2023*, 2024*, 2025*, 2026 (* = numbers or wording changed that year)
27Seema took a small amount of copper powder in a china dish and heated it. What changes will she observe on heating ? When gas is passed over this heated substance, what visible changes will be seen in it ? Give the chemical equations of the reactions involved, along with the names and colours of the products in each case.Question 4
Control and Coordination. Asked 4 times: 2023*, 2024*, 2025*, 2026 (* = numbers or wording changed that year)
11A squirrel in a scary situation requires its body to prepare for either ‘fight or flight’ to save itself. State the immediate changes that will take place in its body so that it can face the situation.Question 5
Heredity. Asked 4 times: 2023*, 2024*, 2025*, 2026 (* = numbers or wording changed that year)
14Show the cross and observations made by Mendel when he crossed pure tall pea plant with a pure short pea plant to get progeny.