Karnataka board question papers 10th state

Can you provide me the Class X/ SSLC (Secondary School leaving Certificate) Science sample question paper of Karnataka Secondary Education Examination Board?

[KunwarR]

The Class X/ SSLC (Secondary School leaving Certificate) Science sample question paper of Karnataka Secondary Education Examination Board is as follows:


Section-A (2 Marks Each)

1. Name the product other than water formed on burning of ethanol in air.
Sol: When ethanol burns in air carbon dioxide is the product formed along with water.
C2H5OH + 3O2 → 2CO2 + 3H2O
Ethanol + Oxygen → Carbon Dioxide + Water



2. How can you show that the magnetic field produced by a given electric current in the wire decreases as the distance from the wire increases?
Sol: When a compass needle is brought near a current carrying conductor, it shows deflection. As we move the needle away from the wire, the magnitude of the deflection in the compass decreases, which shows that the magnetic field produced by a given electric current in the wire decreases as the distance from the wire increases.



3.Why does magnesium powder react much more rapidly than magnesium ribbon with dilute sulphuric acid?
Sol: Magnesium powder reacts more rapidly than magnesium ribbon as surface area increases in powder. As a result more magnesium atoms are exposed to dilute sulphuric acid resulting in faster reaction.



4. An object is placed at a distance of 12 cm in front of a concave mirror. The real image formed is four times larger than the object.What is the distance of the image from the mirror.
Sol: Given, object distance, u= -12 cm and magnification, m = -4
Image distance, v= ?
Magnification,
M = - v / u
-4 = - v / - 12
= -48 cm
Hence, the image is at a distance of 48 cm in front of mirror.



5.(1) Draw a diagram to show how two resistors R1 and R2 are connected in series.
(2) If the two resistors of 5 ohm and 10 ohm are connected in series, What is the currents passing through the two resistors.
Sol:- In series combination the current through all the resistors will be same. So, the current passing through the two resistors are in the ratio 1: 1



Class X Science Question Paper Karnataka Secondary Education Examination Board