List of top Science and Technology Questions asked in Maharashtra Class X Board

Define periods and groups of the modern periodic table.
Complete the following reaction: \[ \text{C}_{12}\text{H}_{22}\text{O}_{11} \xrightarrow{\text{heat}} \text{..................} + \text{..................} \]
Lemon or tamarind is used for cleaning copper vessels turned greenish.
For electric power transmission, copper or aluminium wire is used.
Elements belonging to the same group have the same valency.
State True or False: "Wavelength of red light is close to \( 700 \text{ nm} \)."
Complete the co-relation: \[ \text{CuI}_2 \text{: Brown} :: \text{AgCl} \text{: ............................} \]
If a ray of light passes from a denser medium to a rarer medium in a straight line, the angle of incidence must be ................
Good conductor of electricity is ............................
Find the odd man out: Loudspeaker, Microphone, Electric motor, Magnet.
The height of medium earth orbit above the surface of the earth is :
The power of a convex lens of focal length \( 20 \text{ cm} \) is ....................
The device used for producing current is called .................................